Empathy, perspective taking and how the brain handles other minds.
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Qurʾān
القرآن6 shownVerses named for this subject by hand come first. The rest are found by the subject’s own Arabic and English senses and are shown as lexical matches, not as anchors anyone has confirmed.
Qur'ān 49:12Arabic sense: الظن, تجسسوا
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ ٱجۡتَنِبُواْ كَثِيرࣰ ا مِّنَ ٱلظَّنِّ إِنَّ بَعۡضَ ٱلظَّنِّ إِثۡمࣱۖ وَلَا تَجَسَّسُواْ وَلَا يَغۡتَب بَّعۡضُكُم بَعۡضًاۚ أَيُحِبُّ أَحَدُكُمۡ أَن يَأۡكُلَ لَحۡمَ أَخِيهِ مَيۡتࣰ ا فَكَرِهۡتُمُوهُۚ وَٱتَّقُواْ ٱللَّهَۚ إِنَّ ٱللَّهَ تَوَّابࣱ رَّحِيمࣱ
Believers, avoid making too many assumptions- some assumptions are sinful- and do not spy on one another or speak ill of people behind their backs: would any of you like to eat the flesh of your dead brother? No, you would hate it. So be mindful of God: God is ever relenting, most merciful
Qur'ān 2:235Arabic sense: يعلم ما في انفسكم
وَلَا جُنَاحَ عَلَيۡكُمۡ فِيمَا عَرَّضۡتُم بِهِۦ مِنۡ خِطۡبَةِ ٱلنِّسَآءِ أَوۡ أَكۡنَنتُمۡ فِيٓ أَنفُسِكُمۡۚ عَلِمَ ٱللَّهُ أَنَّكُمۡ سَتَذۡكُرُونَهُنَّ وَلَٰكِن لَّا تُوَاعِدُوهُنَّ سِرًّا إِلَّآ أَن تَقُولُواْ قَوۡلࣰ ا مَّعۡرُوفࣰ اۚ وَلَا تَعۡزِمُواْ عُقۡدَةَ ٱلنِّكَاحِ حَتَّىٰ يَبۡلُغَ ٱلۡكِتَٰبُ أَجَلَهُۥۚ وَٱعۡلَمُوٓاْ أَنَّ ٱللَّهَ يَعۡلَمُ مَا فِيٓ أَنفُسِكُمۡ فَٱحۡذَرُوهُۚ وَٱعۡلَمُوٓاْ أَنَّ ٱللَّهَ غَفُورٌ حَلِيمࣱ
You will not be blamed whether you give a hint that you wish to marry these women, or keep it to yourselves- God knows that you intend to propose to them. Do not make a secret arrangement with them; speak to them honourably and do not confirm the marriage tie until the prescribed period reaches its end. Remember that God knows what is in your souls, so be mindful of Him. Remember that God is most forgiving and forbearing
Qur'ān 3:119Arabic sense: بذات الصدور
هَٰٓأَنتُمۡ أُوْلَآءِ تُحِبُّونَهُمۡ وَلَا يُحِبُّونَكُمۡ وَتُؤۡمِنُونَ بِٱلۡكِتَٰبِ كُلِّهِۦ وَإِذَا لَقُوكُمۡ قَالُوٓاْ ءَامَنَّا وَإِذَا خَلَوۡاْ عَضُّواْ عَلَيۡكُمُ ٱلۡأَنَامِلَ مِنَ ٱلۡغَيۡظِۚ قُلۡ مُوتُواْ بِغَيۡظِكُمۡۗ إِنَّ ٱللَّهَ عَلِيمُۢ بِذَاتِ ٱلصُّدُورِ
This is how it is: here you are, you love them, but they do not love you; you believe in all the Scriptures and when they meet you, they say, ‘We believe,’ but when they are alone, they bite their fingertips in rage at you. [Prophet], say, ‘Die of rage [if you wish]!’ God knows exactly what is in everyone’s hearts
Qur'ān 3:154Arabic sense: بذات الصدور
ثُمَّ أَنزَلَ عَلَيۡكُم مِّنۢ بَعۡدِ ٱلۡغَمِّ أَمَنَةࣰ نُّعَاسࣰ ا يَغۡشَىٰ طَآئِفَةࣰ مِّنكُمۡۖ وَطَآئِفَةࣱ قَدۡ أَهَمَّتۡهُمۡ أَنفُسُهُمۡ يَظُنُّونَ بِٱللَّهِ غَيۡرَ ٱلۡحَقِّ ظَنَّ ٱلۡجَٰهِلِيَّةِۖ يَقُولُونَ هَل لَّنَا مِنَ ٱلۡأَمۡرِ مِن شَيۡءࣲۗ قُلۡ إِنَّ ٱلۡأَمۡرَ كُلَّهُۥ لِلَّهِۗ يُخۡفُونَ فِيٓ أَنفُسِهِم مَّا لَا يُبۡدُونَ لَكَۖ يَقُولُونَ لَوۡ كَانَ لَنَا مِنَ ٱلۡأَمۡرِ شَيۡءࣱ مَّا قُتِلۡنَا هَٰهُنَاۗ قُل لَّوۡ كُنتُمۡ فِي بُيُوتِكُمۡ لَبَرَزَ ٱلَّذِينَ كُتِبَ عَلَيۡهِمُ ٱلۡقَتۡلُ إِلَىٰ مَضَاجِعِهِمۡۖ وَلِيَبۡتَلِيَ ٱللَّهُ مَا فِي صُدُورِكُمۡ وَلِيُمَحِّصَ مَا فِي قُلُوبِكُمۡۚ وَٱللَّهُ عَلِيمُۢ بِذَاتِ ٱلصُّدُورِ
After sorrow, He caused calm to descend upon you, a sleep that overtook some of you. Another group, caring only for themselves, entertained false thoughts about God, thoughts more appropriate to pagan ignorance, and said, ‘Do we get a say in any of this?’ [Prophet], tell them, ‘Everything to do with this affair is in God’s hands.’ They conceal in their hearts things they will not reveal to you. They say, ‘If we had had our say in this, none of us would have been killed here.’ Tell them, ‘Even if you had resolved to stay at home, those who were destined to be killed would still have gone out to meet their deaths.’ God did this in order to test everything within you and in order to prove what is in your hearts. God knows your innermost thoughts very well
Qur'ān 5:7Arabic sense: بذات الصدور
وَٱذۡكُرُواْ نِعۡمَةَ ٱللَّهِ عَلَيۡكُمۡ وَمِيثَٰقَهُ ٱلَّذِي وَاثَقَكُم بِهِۦٓ إِذۡ قُلۡتُمۡ سَمِعۡنَا وَأَطَعۡنَاۖ وَٱتَّقُواْ ٱللَّهَۚ إِنَّ ٱللَّهَ عَلِيمُۢ بِذَاتِ ٱلصُّدُورِ
Remember God’s blessing on you and the pledge with which you were bound when you said, ‘We hear and we obey.’ Be mindful of God: God has full knowledge of the secrets of the heart
Qur'ān 8:43Arabic sense: بذات الصدور
إِذۡ يُرِيكَهُمُ ٱللَّهُ فِي مَنَامِكَ قَلِيلࣰ اۖ وَلَوۡ أَرَىٰكَهُمۡ كَثِيرࣰ ا لَّفَشِلۡتُمۡ وَلَتَنَٰزَعۡتُمۡ فِي ٱلۡأَمۡرِ وَلَٰكِنَّ ٱللَّهَ سَلَّمَۚ إِنَّهُۥ عَلِيمُۢ بِذَاتِ ٱلصُّدُورِ
[Prophet], remember when God made you see them in your sleep as few: if He had shown them to you [believers] as many, you would certainly have lost heart and argued about it, but God saved you. He knows the secrets of the heart
Tafsīr
التفسير6 shownCommentary on the verses above, at most two editions per verse.
en-al-jalalayn on 49:12en-al-jalalayncommentary on an ayah this subject surfaced
O you who believe shun much suspicion. Indeed some suspicions are sins that is to say it causes one to fall into sin. This suspicion may have many forms such as thinking ill of the good folk from among the believers — and such good folk are many — in contrast to the immoral individuals among them in whose case there is no sin so long as it the suspicion is in accordance with their outward behaviour. And do not spy tajassasū one of the two tā’ letters of tatajassasū has been omitted do not pursue the imperfections and faults of Muslims by searching them out; nor backbite one another do not speak of him by mentioning something which he is averse to having mentioned of himself even if it be true. Would any of you love to eat the flesh of his brother dead? read maytan or mayyitan. That is to say it would not be right for him to do so. You would abhor it. Thus to backbite him in life would be
en-tafisr-ibn-kathir on 49:12en-tafisr-ibn-kathircommentary on an ayah this subject surfaced
O you who believe! Avoid much suspicion; indeed some suspicion is sin. And spy not, neither backbite one another. Would one of you like to eat the flesh of his dead brother? You would hate it. And have Taqwa of Allah. Verily, Allah is the One Who forgives and accepts repentance, Most Merciful (12)
The Prohibition of Unfounded Suspicion
Allah the Exalted forbids His faithful servants from being suspicious, which includes having doubts and suspicions about the conduct of one's family, relatives and other people in general. Therefore, Muslims are to avoid suspicion without foundation. The Leader of the faithful 'Umar bin Al-Khattab said, "Never think ill of the word that comes out of your believing brother's mouth, as long as you can find a good excuse for it."
Malik recorded that Abu Hurayrah, may Allah be pleased with him, said that Allah's Messenger ﷺ said,
إِيَّاكُمْ وَالظَّنَّ فَإِ
en-asbab-al-nuzul-by-al-wahidi on 3:119en-asbab-al-nuzul-by-al-wahidicommentary on an ayah this subject surfaced
Ha! There you are: You love them, but they do not love you. The faithful had limpid hearts and generous natures, and they did not keep tenderness and mercy back from the estranged. They wanted good for them and attached their hearts to their submission. They wanted their salvation and did not hold back God's mercy from them-whether they were acquaintances or strangers. This kept on crossing their minds: Bring the sweetmeat, for it is the heart's beloved, suited for both the elect and the common. This is the same tenderness that MuḤammad showed to the estranged. He said, “O God, guide my people, for they do not know.” As for the unbelievers, those who had no limpidness in their hearts or loyalty in their natures, they never wanted good for the people of faith, nor did they love them. They grieved at the good that reached them and became happy at the bad. God says, “If something beautiful
en-al-jalalayn on 2:235en-al-jalalayncommentary on an ayah this subject surfaced
You would not be at fault regarding the proposal with the intention of marriage you present offer or hide in your hearts during the waiting period to women whose spouses have died such as men saying ‘How beautiful you are!’ or ‘Who could find one like you?’ or ‘How many a man must desire you!’. God knows that you will be mindful of them in proposing to them impatiently and so He has permitted you to make such offers; but do not make arrangements of marriage with them secretly unless you speak honourable words such as are acknowledged by the Law in other words such as proposals that which is permitted to you. And do not resolve on the knot the consummation of marriage until that which is written the period prescribed has reached its term and has been completed; and know that God knows what is in your souls of resolve or otherwise; so be fearful of Him that He should chastise you if you ha
en-tafisr-ibn-kathir on 2:235en-tafisr-ibn-kathircommentary on an ayah this subject surfaced
And there is no sin on you if you make a hint of betrothal or conceal it in yourself, Allah knows that you will remember them, but do not make a promise (of contract) with them in secret except that you speak an honorable saying. And do not be determined on the marriage bond until the term prescribed is fulfilled. And know that Allah knows what is in your minds, so fear Him. And know that Allah is Oft-Forgiving, Most Forbearing (235)
Mentioning Marriage indirectly during the 'Iddah
Allah said:
وَلَا جُنَاحَ عَلَيْكُمْ
(And there is no sin on you) meaning, to indirectly mention marriage to the widow during the term of 'Iddah for her deceased husband. Ath-Thawri, Shu'bah and Jarir stated that Ibn 'Abbas said:
وَلَا جُنَاحَ عَلَيْكُمْ فِيمَا عَرَّضْتُم بِهِ مِنْ خِطْبَةِ النِّسَاءِ
(And there is no sin on you if you make a hint of betrothal) "means saying, 'I want to marry and I am lo
en-al-jalalayn on 3:119en-al-jalalayncommentary on an ayah this subject surfaced
Lo hā ‘lo!’ is for calling attention to something there you are O believers you love them on account of their kinship and their pretence of friendship towards you but they love you not since they oppose you in religion; you believe in the Book all of it that is to say in the Books all of them but they do not believe in your Book and when they meet you they say ‘We believe’ but when they are alone they bite at you their fingertips in rage in extreme fury at what they see of your mutual affection the biting of the fingertips is used to figuratively express the severity of rage even if there be no biting involved. Say ‘Perish in your rage that is be this way until the end of your lives for you shall not see what will please you; God knows what is in the breasts’ what is in the hearts including that which these conceal.
Research library, full list
1801 to 1825 of 2,381Neural and cognitive characteristics of extraordinary altruists.
Altruistic behavior improves the welfare of another individual while reducing the altruist's welfare. Humans' tendency to engage in altruistic behaviors is unevenly distributed across the population, and individual variation in altruistic tendencies may be genetically mediated. Although neural endophenotypes of heightened or extreme antisocial behavior tendencies have been identified in, for example, studies of psychopaths, little is known about the neural mechanisms that support heightened or extreme prosocial or altruistic tendencies. In this study, we used structural and functional magnetic resonance imaging to assess a population of extraordinary altruists: altruistic kidney donors who volunteered to donate a kidney to a stranger. Such donations meet the most stringent definitions of altruism in that they represent an intentional behavior that incurs significant costs to the donor to…
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Oxytocin and vasopressin modulate the social response to threat: a preclinical study.
Individuals in many species increase their proximity to others in threatening situations (defensive aggregation), increasing their chance of survival and reducing the adverse psychological impact of stressors. However, the basic neurobiology of defensive aggregation is not well understood. Here we examined the role of the social neuropeptides oxytocin (OT) and vasopressin (AVP) in this response. Groups of rats were exposed to a ball of cat fur (an innate threat stimulus) in a large arena, causing prolonged periods of tight social grouping (huddling). The modulatory effects of OT and AVP on huddling were examined both alone and in conjunction with relevant antagonists. To determine specificity of treatment effects to social grouping, the effects of the same treatments were also assessed in individual rats exposed to cat fur and given the opportunity to hide. OT (0.5 mg/kg, i.p.) and AVP (…
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Cognitive-behavioral therapy for generalized anxiety disorder is associated with attenuation of limbic activation to threat-related facial emotions.
Background: The neural processes underlying the benefits of cognitive behavioral treatment (CBT) for generalized anxiety disorder (GAD) are not well understood.
Methods: Twenty-one (n=21) adults with a principal diagnosis of GAD and eleven (n=11) non-anxious healthy controls (HC) underwent functional magnetic resonance imaging while completing a facial emotion processing task. Responses to threat-related emotionality (i.e., the contrast of fear and angry vs. happy faces) were assessed at pretreatment and again following 10 sessions of CBT in the GAD group and a comparable waiting period in the HC group.
Results: At pretreatment, GAD participants displayed blunted responses in the amygdala, insula, and anterior cingulate to the happy face-processing comparison condition, and greater amygdalo-insular connectivity. CBT was associated with attenuated amygdalar and subgenual anterior cingulat…
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Fear from the heart: sensitivity to fear stimuli depends on individual heartbeats.
Cognitions and emotions can be influenced by bodily physiology. Here, we investigated whether the processing of brief fear stimuli is selectively gated by their timing in relation to individual heartbeats. Emotional and neutral faces were presented to human volunteers at cardiac systole, when ejection of blood from the heart causes arterial baroreceptors to signal centrally the strength and timing of each heartbeat, and at diastole, the period between heartbeats when baroreceptors are quiescent. Participants performed behavioral and neuroimaging tasks to determine whether these interoceptive signals influence the detection of emotional stimuli at the threshold of conscious awareness and alter judgments of emotionality of fearful and neutral faces. Our results show that fearful faces were detected more easily and were rated as more intense at systole than at diastole. Correspondingly, amy…
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Involvement of different mesotocin (oxytocin homologue) populations in sexual and aggressive behaviours of the brown anole.
The oxytocin (OT) family of neuropeptides are known to modulate social behaviours and anxiety in mammals and birds. We investigated cell numbers and neural activity, assessed as Fos induction, within magnocellular and parvocellular populations of neurons producing the OT homologue mesotocin (MT, Ile(8)-oxytocin). This was conducted within the male brown anole lizard, Anolis sagrei, following agonistic or courtship encounters with a conspecific. Both neurons colocalizing and not colocalizing corticotropin-releasing factor (CRF) were examined. Parvocellular neurons of the paraventricular nucleus exhibited a positive correlation between courtship frequency and Fos colocalization, regardless of whether they produce just MT or MT + CRF. Magnocellular populations showed only trends towards positive relationships with courtship and no cell populations showed aggression-related Fos induction. Th…
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Motomura Y, Kitamura S, Oba K, Terasawa Y, Enomoto M, Katayose Y, Hida A, Moriguchi Y, Higuchi S, Mishima K (2014)MEDLINE-indexed journal, not yet read by usBMC neuroscience30 citations Sleepiness induced by sleep-debt enhanced amygdala activity for subliminal signals of fear.
Background: Emotional information is frequently processed below the level of consciousness, where subcortical regions of the brain are thought to play an important role. In the absence of conscious visual experience, patients with visual cortex damage discriminate the valence of emotional expression. Even in healthy individuals, a subliminal mechanism can be utilized to compensate for a functional decline in visual cognition of various causes such as strong sleepiness. In this study, sleep deprivation was simulated in healthy individuals to investigate functional alterations in the subliminal processing of emotional information caused by reduced conscious visual cognition and attention due to an increase in subjective sleepiness. Fourteen healthy adult men participated in a within-subject crossover study consisting of a 5-day session of sleep debt (SD, 4-h sleep) and a 5-day session of s…
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Separation anxiety, attachment and inter-personal representations: disentangling the role of oxytocin in the perinatal period.
In this paper, we aimed to assess cross-sectionally and longitudinally associations between disturbances in maternal early attachment experiences, symptoms of separation anxiety and depression and oxytocin plasma levels. We examined a mediational model that tested the hypothesis that anxious attachment style arising from the mothers' early bonding experiences with her own parents was associated with high levels of separation anxiety which, via its impact on depression, was associated with reduced levels of oxytocin in the postnatal period. Data is reported on a structured sample of 127 women recruited during pregnancy from a general hospital antenatal clinic and an initial follow up cohort of 57 women who were re-assessed at 3-months post-partum. We found an association between lower oxytocin level in the post partum period and symptoms of separation anxiety and depression during pregnan…
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Does oxytocin modulate variation in maternal caregiving in healthy new mothers?
Background: Maternal sensitivity to infant cues and developmental needs may be pivotal for social and cognitive development. Animal and recent human studies emphasise a major role for Oxytocin (OT) in mediating sensitive caregiving but no study has examined the relationship between OT and extreme variation in human maternal sensitivity.
Methods: From 105 expectant mothers, 80 underwent blind-rating of maternal sensitivity at 4-6 months postpartum through free-play interaction with their infants. At 7-9 months postpartum, 30 mothers at extremes of maternal sensitivity: 15 'sensitive mothers' (high sensitivity mothers - HSMs, mean=4.47; SD=0.74) and 15 'less sensitive mothers' (low sensitivity mothers - LSMs, mean=2.13; SD=0.52) underwent plasma OT measurements before and after 10 min infant play.
Results: Baseline and post-interaction plasma OT was higher in LSMs than HSMs [F(1, 26)=8.42;…
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Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees.
Humans excel in cooperative exchanges between unrelated individuals. Although this trait is fundamental to the success of our species, its evolution and mechanisms are poorly understood. Other social mammals also build long-term cooperative relationships between non-kin, and recent evidence shows that oxytocin, a hormone involved in parent-offspring bonding, is likely to facilitate non-kin as well as kin bonds. In a population of wild chimpanzees, we measured urinary oxytocin levels following a rare cooperative event--food sharing. Subjects showed higher urinary oxytocin levels after single food-sharing events compared with other types of social feeding, irrespective of previous social bond levels. Also, urinary oxytocin levels following food sharing were higher than following grooming, another cooperative behaviour. Therefore, food sharing in chimpanzees may play a key role in social bo…
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Rapid fear detection relies on high spatial frequencies.
Signals of threat--such as fearful faces--are processed with priority and have privileged access to awareness. This fear advantage is commonly believed to engage a specialized subcortical pathway to the amygdala that bypasses visual cortex and processes predominantly low-spatial-frequency information but is largely insensitive to high spatial frequencies. We tested visual detection of low- and high-pass-filtered fearful and neutral faces under continuous flash suppression and sandwich masking, and we found consistently that the fear advantage was specific to high spatial frequencies. This demonstrates that rapid fear detection relies not on low- but on high-spatial-frequency information--indicative of an involvement of cortical visual areas. These findings challenge the traditional notion that a subcortical pathway to the amygdala is essential for the initial processing of fear signals a…
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Altered emotion perception in insomnia disorder.
Study objectives: Chronic insomnia is a prevalent sleep disorder that negatively affects daytime functioning and confers risk for the future development of psychiatric disorder. Patients with insomnia often report problems with emotion regulation and impaired social interactions. Moreover, experimental sleep loss in healthy adults is associated with altered reactivity to and interpretation of emotional information. In the current study, we investigated socioemotional processing in patients with chronic insomnia disorder relative to healthy good sleepers.
Design: Between-groups comparison.
Setting: Sleep Research Laboratory.
Participants: Patients with well-defined psychophysiological insomnia (PI; n = 16), free from psychiatric disorder, and an age- and sex-matched control group of good sleepers (GS; n = 15).
Interventions: N/A.
Measurement and results: All participants completed a facia…
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Human-lamb bonding: oxytocin, cortisol and behavioural responses of lambs to human contacts and social separation.
Friendly interactions between humans and animals such as gentling or petting have been shown to have positive behavioural and physiological consequences in many species. In primates, rodents and dogs, oxytocin has been associated with tactile contact and anti-stress effects that may influence bonding and responses to stress situations. However the activation of the oxytocinergic system in other human-animal interactions such as with herbivores, had not yet been studied. Sixteen female lambs were reared by artificial feeding reinforced with 3× 30 s daily stroking sessions. At 6 weeks of age, the test consisted in measuring first plasma oxytocin and cortisol responses in lambs during a first 6-min phase in the home pen where the familiar caregiver gently stroked the lamb, and then physiological and behavioural responses in a test pen during a 20-min - phase of social isolation followed by …
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Sex differences in methamphetamine seeking in rats: impact of oxytocin.
Previous evidence in an animal model of drug self-administration and drug seeking showed that acute oxytocin decreased methamphetamine (meth) seeking in male rats, suggesting potential clinical efficacy for the treatment of psychostimulant addiction. However, based on the well-established role of oxytocin in reproduction and pair bond formation, it is important to know how this effect extrapolates to females. Here, we tested whether oxytocin (1mg/kg, IP) would decrease meth seeking in female rats across various stages of the estrous cycle (Experiment 1). Freely cycling Long Evans female rats self-administered meth (IV) in 2-h daily sessions, followed by daily extinction sessions. Following extinction, rats received oxytocin (0, 0.3, or 1mg/kg, IP) 30min before a meth priming injection (1mg/kg, IP) to assess reinstatement of meth seeking. Next, we examined the effects of oxytocin on motiv…
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Neural processing correlates of assaultive violence exposure and PTSD symptoms during implicit threat processing: a network-level analysis among adolescent girls.
Assaultive violence exposure during childhood is a significant risk factor for posttraumatic stress disorder (PTSD). The purpose of the present study was to characterize the relationships of assault and PTSD severity with the organization of large-scale networks identified during emotion processing. Adolescent girls aged 12-16 with (N=15) and without (N=15) histories of assault underwent functional magnetic resonance imaging (fMRI) while engaged in a task that presented images of fearful or neutral facial expressions. Independent component analysis (ICA) identified a frontocingulate network, a frontoparietal network, and a default mode network. Assault exposure was associated with significantly greater activation of the frontocingulate network for fear versus neutral faces. Within the frontocingulate network, Posttraumatic stress disorder (PTSD) severity was associated with weakened func…
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Endocannabinoid receptor deficiency affects maternal care and alters the dam's hippocampal oxytocin receptor and brain-derived neurotrophic factor expression.
Maternal care is the newborn's first experience of social interaction, and this influences infant survival, development and social competences throughout life. We recently found that postpartum blocking of the endocannabinoid receptor-1 (CB1R) altered maternal behaviour. In the present study, maternal care was assessed by the time taken to retrieve pups, pups' ultrasonic vocalisations (USVs) and pup body weight, comparing CB1R deleted (CB1R KO) versus wild-type (WT) mice. After culling on postpartum day 8, hippocampal expression of oxytocin receptor (OXTR), brain-derived neurotrophic factor (BDNF) and stress-mediating factors were evaluated in CB1R KO and WT dams. Comparisons were also performed with nulliparous (NP) CB1R KO and WT mice. Compared to WT, CB1R KO dams were slower to retrieve their pups. Although the body weight of the KO pups did not differ from the weight of WT pups, they…
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A developmental shift from positive to negative connectivity in human amygdala-prefrontal circuitry.
Recent human imaging and animal studies highlight the importance of frontoamygdala circuitry in the regulation of emotional behavior and its disruption in anxiety-related disorders. Although tracing studies have suggested changes in amygdala-cortical connectivity through the adolescent period in rodents, less is known about the reciprocal connections within this circuitry across human development, when these circuits are being fine-tuned and substantial changes in emotional control are observed. The present study examined developmental changes in amygdala-prefrontal circuitry across the ages of 4-22 years using task-based functional magnetic resonance imaging. Results suggest positive amygdala-prefrontal connectivity in early childhood that switches to negative functional connectivity during the transition to adolescence. Amygdala-medial prefrontal cortex functional connectivity was sign…
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Fear of negative evaluation and attentional bias for facial expressions: an event-related study.
Numerous studies have shown an exacerbation of attentional bias towards threat in anxiety states. However, the cognitive mechanisms responsible for these attentional biases remain largely unknown. Further, the authors outline the need to consider the nature of the attentional processes in operation (hypervigilance, avoidance, or disengagement). We adapted a dot-probe paradigm to record behavioral and electrophysiological responses in 26 participants reporting high or low fear of evaluation, a major component of social anxiety. Pairs of faces including a neutral and an emotional face (displaying anger, fear, disgust, or happiness) were presented during 200 ms and then replaced by a neutral target to discriminate. Results show that anxious participants were characterized by an increased P1 in response to pairs of faces, irrespective of the emotional expression included in the pair. They al…
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Brief report: oxytocin enhances paternal sensitivity to a child with autism: a double-blind within-subject experiment with intranasally administered oxytocin.
Oxytocin seems associated with parenting style, and experimental work showed positive effects of intranasally administered oxytocin on parenting style of fathers. Here, the first double-blind, placebo-controlled, within-subject experiment with intranasal oxytocin administration to fathers of children with autism spectrum disorder (ASD) is presented. Fathers with their typically developing toddler (n = 18), and fathers of toddlers diagnosed with ASD (n = 14), were observed in two play sessions of 15 min each with an intervening period of 1 week. In all fathers oxytocin elevated the quality of paternal sensitive play: fathers stimulated their child in a more optimal way, and they showed less hostility which suggests the positive effects of oxytocin on paternal sensitive play irrespective of clinical status of their child.
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Poutahidis T, Kearney SM, Levkovich T, Qi P, Varian BJ, Lakritz JR, Ibrahim YM, Chatzigiagkos A, Alm EJ, Erdman SE (2013)MEDLINE-indexed journal, not yet read by usPloS one221 citations Microbial symbionts accelerate wound healing via the neuropeptide hormone oxytocin.
Wound healing capability is inextricably linked with diverse aspects of physical fitness ranging from recovery after minor injuries and surgery to diabetes and some types of cancer. Impact of the microbiome upon the mammalian wound healing process is poorly understood. We discover that supplementing the gut microbiome with lactic acid microbes in drinking water accelerates the wound-healing process to occur in half the time required for matched control animals. Further, we find that Lactobacillus reuteri enhances wound-healing properties through up-regulation of the neuropeptide hormone oxytocin, a factor integral in social bonding and reproduction, by a vagus nerve-mediated pathway. Bacteria-triggered oxytocin serves to activate host CD4+Foxp3+CD25+ immune T regulatory cells conveying transplantable wound healing capacity to naive Rag2-deficient animals. This study determined oxytocin t…
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Krusemark EA, Li W (2013)MEDLINE-indexed journal, not yet read by usThe Journal of neuroscience : the official journal of the Society for Neuroscience33 citations From early sensory specialization to later perceptual generalization: dynamic temporal progression in perceiving individual threats.
Threat evokes a variety of negative emotions such as fear, anger, and disgust. Whereas they elicit distinct and even opposite facial, sensory, and autonomic reflexes, threat-related emotions often converge in the actions they prompt (e.g., negative evaluation and avoidance). Here, we tested a unifying hypothesis that threat processing initially involves specialized encoding of individual subtypes to support discrete reflexive operations that later gives way to generalized elaborate analysis to facilitate convergent defensive behavior. Combining event-related potentials (ERPs) and a defensive context in human subjects, we compared temporal courses of perceptual analysis of two threat subtypes-fear and disgust. Indeed, fear enhanced and disgust suppressed early (115 ms) response in visual cortex, accentuating specialized sensory encoding of threat subtypes in accordance with the opposite b…
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Plasma oxytocin and vasopressin do not predict neuropeptide concentrations in human cerebrospinal fluid.
The involvement of the neuropeptides oxytocin (OXT) and vasopressin (AVP) in human socio-emotional behaviours is attracting increasing attention. There is ample evidence for elevated plasma levels upon a wide variety of social and emotional stimuli and scenarios, ranging from romantic love via marital distress up to psychopathology, with cause versus consequence being largely unclear. The present study examined whether plasma levels of both OXT and AVP are reflective of central neuropeptide levels, as assumed to impact upon socio-emotional behaviours. Concomitant plasma and cerebrospinal fluid (CSF) samples were taken from 41 non-neurological and nonpsychiatric patients under basal conditions. Although OXT and AVP levels in the CSF exceeded those in plasma, there was no correlation between both compartments, clearly suggesting that plasma OXT and AVP do not predict central neuropeptide c…
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Oxytocin modulates proliferation and stress responses of human skin cells: implications for atopic dermatitis.
The neuropeptide hormone oxytocin (OXT) mediates a wide spectrum of tissue-specific actions, ranging from cell growth, cell differentiation, sodium excretion to stress responses, reproduction and complex social behaviour. Recently, OXT expression was detected in keratinocytes, but expression of its receptor and function are still unexplored in human skin. Here, we showed that both OXT and its receptor are expressed in primary human dermal fibroblasts and keratinocytes. OXT-induced dose-dependent calcium fluxes in both cell types demonstrating that the OXT receptor (OXTR) is functionally expressed. We also showed that OXT decreases proliferation of dermal fibroblasts and keratinocytes in a dose-dependent manner. In order to further investigate OXT-mediated functions in skin cells, we performed OXTR knockdown experiments. OXTR knockdown in dermal fibroblasts and keratinocytes led to elevat…
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Makani V, Sultana R, Sie KS, Orjiako D, Tatangelo M, Dowling A, Cai J, Pierce W, Butterfield DA, Hill J, Park J (2013)MEDLINE-indexed journal, not yet read by usJournal of neuroendocrinology7 citations Annexin A1 complex mediates oxytocin vesicle transport.
Oxytocin is a major neuropeptide that modulates the brain functions involved in social behaviour and interaction. Despite of the importance of oxytocin for the neural control of social behaviour, little is known about the molecular mechanism(s) by which oxytocin secretion in the brain is regulated. Pro-oxytocin is synthesised in the cell bodies of hypothalamic neurones in the supraoptic and paraventricular nuclei and processed to a 9-amino-acid mature form during post-Golgi transport to the secretion sites at the axon terminals and somatodendritic regions. Oxytocin secreted from the somatodendritic regions diffuses throughout the hypothalamus and its neighbouring brain regions. Some oxytocin-positive axons innervate and secrete oxytocin to the brain regions distal to the hypothalamus. Brain oxytocin binds to its receptors in the brain regions involved in social behaviour. Oxytocin is als…
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Dannlowski U, Stuhrmann A, Beutelmann V, Zwanzger P, Lenzen T, Grotegerd D, Domschke K, Hohoff C, Ohrmann P, Bauer J, Lindner C, Postert C, Konrad C, Arolt V, Heindel W, Suslow T, Kugel H (2012)MEDLINE-indexed journal, not yet read by usBiological psychiatry686 citations Limbic scars: long-term consequences of childhood maltreatment revealed by functional and structural magnetic resonance imaging.
Background: Childhood maltreatment represents a strong risk factor for the development of depression and posttraumatic stress disorder (PTSD) in later life. In the present study, we investigated the neurobiological underpinnings of this association. Since both depression and PTSD have been associated with increased amygdala responsiveness to negative stimuli as well as reduced hippocampal gray matter volume, we speculated that childhood maltreatment results in similar functional and structural alterations in previously maltreated but healthy adults.
Methods: One hundred forty-eight healthy subjects were enrolled via public notices and newspaper announcements and were carefully screened for psychiatric disorders. Amygdala responsiveness was measured by means of functional magnetic resonance imaging and an emotional face-matching paradigm particularly designed to activate the amygdala in r…
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Cerebellum and processing of negative facial emotions: cerebellar transcranial DC stimulation specifically enhances the emotional recognition of facial anger and sadness.
Some evidence suggests that the cerebellum participates in the complex network processing emotional facial expression. To evaluate the role of the cerebellum in recognising facial expressions we delivered transcranial direct current stimulation (tDCS) over the cerebellum and prefrontal cortex. A facial emotion recognition task was administered to 21 healthy subjects before and after cerebellar tDCS; we also tested subjects with a visual attention task and a visual analogue scale (VAS) for mood. Anodal and cathodal cerebellar tDCS both significantly enhanced sensory processing in response to negative facial expressions (anodal tDCS, p=.0021; cathodal tDCS, p=.018), but left positive emotion and neutral facial expressions unchanged (p>.05). tDCS over the right prefrontal cortex left facial expressions of both negative and positive emotion unchanged. These findings suggest that the cerebell…
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