What is extinguished in auditory extinction?

Leon Y. Deouell, Nachum Soroker

Research output: Contribution to journalArticlepeer-review

Abstract

Extinction is a frequent sequel of brain damage, whereupon patients disregard (extinguish) a contralesional stimulus, and report only the more ipsilesional stimulus, of a pair of stimuli presented simultaneously. We investigated the possibility of a dissociation between the detection and the identification of extinguished phonemes. Fourteen right hemisphere damaged patients with severe auditory extinction were examined using a paradigm that separated the localization of stimuli and the identification of their phonetic content. Patients reported the identity of left-sided phonemes, while extinguishing them at the same time, in the traditional sense of the term. This dissociation suggests that auditory extinction is more about acknowledging the existence of a stimulus in the contralesional hemispace than about the actual processing of the stimulus. (C) 2000 Lippincott Williams and Wilkins.

Original languageEnglish
Pages (from-to)3059-3062
Number of pages4
JournalNeuroReport
Volume11
Issue number13
DOIs
StatePublished - 11 Sep 2000

Keywords

  • Attention
  • Auditory extinction
  • Implicit processing
  • Phonetic discrimination
  • Spatial representation
  • Unilateral neglect

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