Conditioned fear extinction and reinstatement in a human fear-potentiated startle paradigm
Norrholm, Seth D × Jovanovic, Tanja Vervliet, Bram Myers, Karyn M Davis, Michael Rothbaum, Barbara O Duncan, Erica J #
Cold spring harbor lab press, publications dept
Learning & Memory vol:13 issue:6 pages:681-685
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.