作者: Yannick Sevelinges , Stephanie Moriceau , Parker Holman , Cathrine Miner , Kyle Muzny
DOI: 10.1016/J.BIOPSYCH.2007.04.025
关键词: Audiology 、 Classical conditioning 、 Context (language use) 、 Olfactory bulb 、 Psychology 、 Olfaction 、 Developmental psychology 、 Amygdala 、 Odor 、 Conditioning 、 Fear conditioning 、 Biological psychiatry
摘要: Background Early life adverse experience alters adult emotional and cognitive development. Here we assess early learning about its consequences on fear conditioning amygdala activity. Methods Neonatal rats were conditioned daily from 8-12 days-old with paired odor (conditioned stimulus, CS) .5mA shock, unpaired, odor-only, or naive (no infant conditioning). In adulthood, each training group was divided into three groups: paired, unpaired using either the same CS odor, a novel without present as context. Adults cue tested for freezing (odor in environment), 14 C 2-DG autoradiography electrophysiology assessment. Results Infant odor-shock attenuated conditioning, but only if used. The activity correlated produced heightened olfactory bulb Electrophysiological assessment further suggests causes changes processing revealed by increased paired-pulse facilitation adulthood. Conclusions This some enduring effects of adversity (shock) are under control dependent upon their impact later learning.