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Conditioned defeat in male and female syrian hamsters
A brief exposure to social defeat in male Syrian hamsters (Mesocricetus auratus) leads to profound changes in the subsequent agonistic behavior exhibited by the defeated animals. Following defeat inExpand
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Activation of GABAA receptors in the amygdala blocks the acquisition and expression of conditioned defeat in Syrian hamsters
Social defeat is a powerful experience that often leads to drastic physiological and behavioral changes in many animal species. An example of such a change is conditioned defeat in Syrian hamsters.Expand
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Short-Day Increases in Aggression Are Inversely Related to Circulating Testosterone Concentrations in Male Siberian Hamsters (Phodopus sungorus)
Many nontropical rodent species display seasonal changes in both physiology and behavior that occur primarily in response to changes in photoperiod. Short-day reductions in reproduction are due, inExpand
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Involvement of central amygdalar and bed nucleus of the stria terminalis corticotropin-releasing factor in behavioral responses to social defeat.
The authors investigated whether corticotropin-releasing factor (CRF) within the central nucleus of the amygdala (CeA) and bed nucleus of the stria terminalis (BNST) is a critical component of theExpand
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Adrenal hormones mediate melatonin-induced increases in aggression in male Siberian hamsters (Phodopus sungorus)
Among the suite of seasonal adaptations displayed by nontropical rodents, some species demonstrate increased territorial aggression in short compared with long day lengths despite basal levels ofExpand
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GABA interacts with photic signaling in the suprachiasmatic nucleus to regulate circadian phase shifts
Circadian rhythms of physiology and behavior in mammals are driven by a circadian pacemaker located in the suprachiasmatic nucleus of the hypothalamus. The majority of neurons in the suprachiasmaticExpand
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Integration of New Information with Active Memory Accounts for Retrograde Amnesia: A Challenge to the Consolidation/Reconsolidation Hypothesis?
Active (new and reactivated) memories are considered to be labile and sensitive to treatments disrupting the time-dependent consolidation/reconsolidation processes required for their stabilization.Expand
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Distinct subtypes of cholecystokinin (CCK)-containing interneurons of the basolateral amygdala identified using a CCK promoter-specific lentivirus.
The basolateral amygdala (BLA) is critical for the formation of emotional memories. Little is known about the physiological properties of BLA interneurons, which can be divided into four subtypesExpand
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Perspectives on fear generalization and its implications for emotional disorders
Although generalization to conditioned stimuli is not a new phenomenon, renewed interest in understanding its biological underpinning has stemmed from its association with a number of anxietyExpand
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Estrogen facilitates fear conditioning and increases corticotropin-releasing hormone mRNA expression in the central amygdala in female mice
Estrogens exert important actions on fear and anxiety-like behavior both in humans and non-human animals. Currently, the mechanisms underlying estrogenic modulation of fear are not known. However,Expand
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