Preferential responses to extinguished face stimuli are preserved in frontal and occipito-temporal cortex at initial but not later stages of processing.

摘要: Magnetoencephalographic correlates of rapid emotional responses (50-80 ms) in frontal and occipito-temporal regions have recently been reported using a novel MultiCS Conditioning paradigm with odor-conditioned faces. As those short-latency were supposed to partially reflect initial access nonextinguished memories, it could be predicted that they outlast the extinction phase. To test this hypothesis, appetitively aversively faces frequently presented during while event-related magnetic fields recorded. Affect-specific areas found early but not later (130-190 time interval following learning. These results suggest previously acquired memories can accessed at processing stages become ineffective modulating as proceeds.