Journal ArticleDOI
The Medial Extended Amygdala in Male Reproductive Behavior A Node in the Mammalian Social Behavior Network
TLDR
Accumulated behavioral, neuroanatomical, and neuroendocrine data in hamsters, other rodents, and other mammals indicate that this circuit is embedded in a larger integrated network that controls not only male mating behavior, but female sexual behavior, parental behavior, and various forms of aggression.Abstract:
Hormonal and chemosensory signals regulate social behaviors in a wide variety of mammals. In the male Syrian hamster, these signals are integrated in nuclei of the medial extended amygdala, where olfactory and vomeronasal system transmission is modulated by populations of androgen- and estrogen-sensitive neurons. Evidence from behavioral changes following lesions and from immediate early gene expression supports the hypothesis that the medial extended amygdala and medial preoptic area belong to a circuit that functions selectively in male sexual behavior. However, accumulated behavioral, neuroanatomical, and neuroendocrine data in hamsters, other rodents, and other mammals indicate that this circuit is embedded in a larger integrated network that controls not only male mating behavior, but female sexual behavior, parental behavior, and various forms of aggression. In this context, perhaps an individual animal's social responses can be more easily understood as a repertoire of closely interrelated, hormone-regulated behaviors, shaped by development and experience and modulated acutely by the environmental signals and the hormonal milieu of the brain.read more
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The brain basis of emotion: A meta-analytic review
TL;DR: A meta-analytic summary of the neuroimaging literature on human emotion finds little evidence that discrete emotion categories can be consistently and specifically localized to distinct brain regions, and finds evidence that is consistent with a psychological constructionist approach to the mind.
Journal ArticleDOI
The human amygdala and the emotional evaluation of sensory stimuli.
TL;DR: Specific conclusions and hypotheses include that the amygdala activates during exposure to aversive stimuli from multiple sensory modalities, and activation of the amygdala is associated with modulation of motor readiness, autonomic functions, and cognitive processes including attention and memory.
Journal ArticleDOI
Identification of urocortin III, an additional member of the corticotropin-releasing factor (CRF) family with high affinity for the CRF2 receptor
Kathy A. Lewis,Chien Li,Marilyn H. Perrin,Amy L. Blount,Koichi S. Kunitake,Cynthia J. Donaldson,Joan Vaughan,Teresa M. Reyes,J. Gulyas,Wolfgang H. Fischer,Louise M. Bilezikjian,Jean Rivier,Paul E. Sawchenko,Wylie Vale +13 more
TL;DR: Urocortin III is selective for type 2 CRF receptors and thus represents another potential endogenous ligand for these receptors.
Journal ArticleDOI
A neurobehavioral model of affiliative bonding: Implications for conceptualizing a human trait of affiliation.
TL;DR: It is proposed that the capacity to experience affiliative reward via opiate functioning has a disproportionate weight in determining individual differences in affiliation.
Journal ArticleDOI
Neural mechanisms of aggression
Randy J. Nelson,Brian C. Trainor +1 more
TL;DR: This Review summarizes the complex interactions between genes, biological signals, neural circuits and the environment that influence the development and expression of aggressive behaviour.
References
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Large-scale neurocognitive networks and distributed processing for attention, language, and memory
TL;DR: In this paper, the authors propose a model where complex behavior is mapped at the level of multifocal neural systems rather than specific anatomical sites, giving rise to brain-behavior relationships that are both localized and distributed.
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Distribution of androgen and estrogen receptor mRNA‐containing cells in the rat brain: An in situ hybridization study
TL;DR: AR and ER may modulate nonolfactory sensory information as well since labeled cells were found in regions involved in the central relay of somatosensory information, including the mesencephalic nucleus of the trigeminal nerve, the ventral thalamic nuclear group, and the dorsal horn of the spinal cord.
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What is the amygdala
TL;DR: 'Amygdala' and 'amygdalar complex' are terms that now refer to a highly differentiated region near the temporal pole of the mammalian cerebral hemisphere, and cell groups within it appear to be differentiated parts of the traditional cortex, the claustrum, or the striatum.
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New perspectives in basal forebrain organization of special relevance for neuropsychiatric disorders: the striatopallidal, amygdaloid, and corticopetal components of substantia innominata.
G. F. Alheid,Lennart Heimer +1 more
TL;DR: Consideration of morphological and connectional characteristics of basal forebrain suggests that the corticopetal cell groups, together with magnocellular elements of the striatum, serve similar functional roles for the striatopallidal system, the extended amygdala, and the septal-diagonal band complex.
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Organization of projections from the medial nucleus of the amygdala: a PHAL study in the rat
TL;DR: The organization of axonal projections from the basomedial nucleus of the amygdala (BMA) was examined with the Phaseolus vulgaris leucoagglutinin (PHAL) method in adult male rats to identify extra‐amygdalar projections divided into ascending and descending components.