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What is extinguished in auditory extinction?

L Y Deouell1, N Soroker

  • 1Department of Psychology, The Hebrew University of Jerusalem, Israel. msleon@tms.huji.ac.il

Neuroreport
|September 28, 2000
PubMed
Summary
This summary is machine-generated.

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Brain damage can cause auditory extinction, where patients ignore stimuli on one side. This study found patients could identify ignored sounds, suggesting extinction is about awareness, not processing.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Clinical Neurology

Background:

  • Auditory extinction is a common deficit following brain damage.
  • Patients with extinction fail to perceive contralesional stimuli presented alongside ipsilesional stimuli.

Purpose of the Study:

  • To investigate a potential dissociation between stimulus detection and identification in auditory extinction.
  • To explore the underlying mechanisms of auditory extinction.

Main Methods:

  • Examined 14 right hemisphere damaged patients with severe auditory extinction.
  • Utilized a paradigm separating stimulus localization from phonetic content identification.

Main Results:

  • Patients identified left-sided phonemes despite extinguishing them.

Related Experiment Videos

  • This indicates a dissociation between stimulus awareness and detailed processing.

    • Conclusions:

    • Auditory extinction may reflect a failure to acknowledge a stimulus's presence in contralesional space.
    • The findings suggest that stimulus processing may occur even when awareness is impaired.