Serial feature negative training to a target unconditioned stimulus

Abstract

In serial feature-negative (SFN) training to a target unconditioned stimulus (US), eight rats received two types of intermingled trials: (1) trials in which a tone was followed by the delivery of a single food pellet US, and (2) trials in which the delivery of a single food pellet US was followed by three additional food pellets. Following SFN training, the tone showed little transfer to a partially reinforced light cue and the tone’s negative modulation was eliminated after tone extinction. Implications for theories of occasion-setting are discussed.