title: Context modulation of US signal value following explicit and nonexplicit training.
abstract: Context modulation of an unconditioned stimulus (US) signal value was examined in three groups of rats. In Group A+/B-, subjects received explicit training in which a single food pellet US was followed by three additional pellets after either a short delay (in Context A) or a long delay (in Context B). Two other groups received nonexplicit training in which subjects received either the same conditions in Context A, but simple exposure to Context B (Group A+/Bo), or the same conditions in Context B, but simple exposure to Context A (Group Ao/B-). In the test, only Group A+/B- showed significantly more magazine entries shortly after the single food pellet in Context A, compared to Context B. Implications for theories of occasion setting and context modulation are considered.
authors.affiliation: Department of Psychology, University of New Brunswick, New Brunswick, E2L 4L5, Saint John, Canada
authors.forename: Murray J.
authors.initials: MJ
authors.lastname: Goddard