Stimulus configuration, occasion setting, and the hippocampus.

Published

Journal Article (Review)

N. A. Schmajuk, J. Lamoureux, and P. C. Holland (in press) showed that an extension of a neural network model introduced by N. A. Schmajuk and J. J. DiCarlo (1992) characterizes many of the differences between simple conditioning and occasion setting. In the framework of this model, it is proposed that the hippocampus modulates (a) the competition among simple and complex stimuli to establish associations with the unconditioned stimulus, and (b) the configuration of simple stimuli into complex stimuli. Under the assumptions that (a) nonselective lesions of the hippocampal formation impair both configuration and competition, and (b) selective lesions of the hippocampus proper impair only stimulus configuration, the model correctly describes the effects of these lesions on paradigms in which stimuli act as occasion setters.

Full Text

Cited Authors

  • Schmajuk, NA; Buhusi, CV

Published Date

  • April 1997

Published In

Volume / Issue

  • 111 / 2

Start / End Page

  • 235 - 258

PubMed ID

  • 9106665

Pubmed Central ID

  • 9106665

Electronic International Standard Serial Number (EISSN)

  • 1939-0084

International Standard Serial Number (ISSN)

  • 0735-7044

Digital Object Identifier (DOI)

  • 10.1037//0735-7044.111.2.235

Language

  • eng