“…Bekhterev, 1913;Kim & Jung, 2006;Pape & Pare, 2010;Pape & Stork, 2003), and has also long been proven effective in humans (e.g. Fendt & Fanselow, 1999;LaBar, Gatenby, Gore, LeDoux, & Phelps, 1998;Sehlmeyer et al, 2009;Watson & Rayner, 1920). In a classic fear-conditioning paradigm, an initially neutral stimulus (CS) such as a sound is associated with an aversive unconditioned stimulus (US) such as an electrical shock, while another neutral stimulus remains unpaired (CS−) (Maren, 2001;Pavlov, 1927).…”