Conditioned fear extinction and reinstatement in a human fear-potentiated startle paradigm

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<jats:p>The purpose of this study was to analyze fear extinction and reinstatement in humans using fear-potentiated startle. Participants were fear conditioned using a simple discrimination procedure with colored lights as the conditioned stimuli (CSs) and an airblast to the throat as the unconditioned stimulus (US). Participants were extinguished 24 h after fear conditioning. Upon presentation of unsignaled USs after extinction, participants displayed significant fear reinstatement. In summary, these procedures produced robust fear-potentiated startle, significant CS+/CS− discrimination, within-session extinction, and significant reinstatement. This is the first demonstration of fear extinction and reinstatement in humans using startle measures.</jats:p>

Journal

  • Learning & Memory

    Learning & Memory 13 (6), 681-685, 2006-11

    Cold Spring Harbor Laboratory

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