Differential impact of a complex environment on positive affect in an animal model of individual differences in emotionality

Highlights • bHRs emit more 50-kHz USVs relative to bLRs when exposed to a novel environment. • The presence of a cagemate increases 50-kHz USVs in both bHRs and bLRs. • Acute EC increases USVs, in bHRs, whereas chronic exposure decreases USVs in bHRs. • bLRs require repeated exposure to EC to show...

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Veröffentlicht in:	Neuroscience 2013-09, Vol.248, p.436-447
Hauptverfasser:	Perez-Sepulveda, J.A, Flagel, S.B, Garcia-Fuster, M.J, Slusky, R.J, Aldridge, J.W, Watson, S, Akil, H
Format:	Artikel
Sprache:	eng
Schlagworte:	Affect Animals Anxiety - psychology Behavior, Animal Corticosterone - metabolism Depression - metabolism Depression - psychology Disease Models, Animal emotionality Environment Exploratory Behavior Genes, fos - genetics individual differences Individuality Locomotion Male Neurology Nucleus Accumbens - metabolism Rats Rats, Sprague-Dawley Reward RNA, Messenger Stress, Psychological - metabolism Stress, Psychological - psychology ultrasonic vocalization Ultrasonics
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Beschreibung
Zusammenfassung:	Highlights • bHRs emit more 50-kHz USVs relative to bLRs when exposed to a novel environment. • The presence of a cagemate increases 50-kHz USVs in both bHRs and bLRs. • Acute EC increases USVs, in bHRs, whereas chronic exposure decreases USVs in bHRs. • bLRs require repeated exposure to EC to show a significant increase in USVs.
ISSN:	0306-4522 1873-7544
DOI:	10.1016/j.neuroscience.2013.06.015