Disruption of auditory but not visual learning by destruction of intrinsic neurons in the rat medial geniculate body

Joseph Ledoux, Jiro Iwata, Dierdre Pearl, Donald J. Reis

Research output: Contribution to journalArticle

Abstract

The contribution of intrinsic neurons in the medial geniculate body (MG) of the rat to the classical conditioning of emotional responses to acoustic stimuli was examined. Injection of ibotenic acid, which destroys cell bodies but not axons of passage, into the MG disrupted the conditioned changes in mean arterial pressure and emotional behavior elicited by a tone previously associated with footshock. Unconditioned responses elicited by the tone and by the footshock were unaffected. Moreover, the same animals readily learned to associate a visual stimulus with footshock. Thus, destruction of intrinsic neurons in the MG selectively disrupts the conditioning of emotional responses to acoustic stimuli. The MG appears to be the afferent link in a modality specific emotional learning pathway.

Original languageEnglish (US)
Pages (from-to)395-399
Number of pages5
JournalBrain Research
Volume371
Issue number2
DOIs
StatePublished - Apr 23 1986

Fingerprint

Geniculate Bodies
Learning
Neurons
Acoustics
Ibotenic Acid
Classical Conditioning
Axons
Arterial Pressure
Injections

Keywords

  • classical conditioning
  • emotional learning
  • ibotenic acid
  • medial geniculate body

ASJC Scopus subject areas

  • Developmental Biology
  • Molecular Biology
  • Clinical Neurology
  • Neuroscience(all)

Cite this

Disruption of auditory but not visual learning by destruction of intrinsic neurons in the rat medial geniculate body. / Ledoux, Joseph; Iwata, Jiro; Pearl, Dierdre; Reis, Donald J.

In: Brain Research, Vol. 371, No. 2, 23.04.1986, p. 395-399.

Research output: Contribution to journalArticle

Ledoux, Joseph ; Iwata, Jiro ; Pearl, Dierdre ; Reis, Donald J. / Disruption of auditory but not visual learning by destruction of intrinsic neurons in the rat medial geniculate body. In: Brain Research. 1986 ; Vol. 371, No. 2. pp. 395-399.
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