Medial and lateral amygdalectomy differentially influences consummatory negative contrast

Howard C. Becker, Michael F. Jarvis, George C. Wagner, Charles F. Flaherty

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


Rats shifted from a 32% to 4% sucrose solution consume substantially less 4% sucrose than unshifted animals that experience only the 4% solution. This negative contrast effect was found to be attenuated by lesions of the lateral aspects of the amygdala (basolateral, lateral, and basomedial nuclei) and eliminated by lesions of the medial aspects of the amygdala (corticomedial and central nuclei). The results are discussed in terms of the possible role the amygdala may play in some of the proposed determining factors mediating consummatory negative contrast (e.g., emotionality, neophobia, memory).

Original languageEnglish (US)
Pages (from-to)707-712
Number of pages6
JournalPhysiology and Behavior
Issue number5
StatePublished - Nov 1984

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Behavioral Neuroscience


  • Amygdalectomy
  • Incentive contrast
  • Sucrose
  • Taste


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