Auditory middle-latency responses in patients with localized and non-localized lesions of the central nervous system

Yumiko Kaseda, Shozo Tobimatsu, Takato Morioka, Motohiro Kato

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Auditory middle-latency responses were recorded in 45 neurological patients. In 4 patients with localized lesions in the thalamus, or subcortical white matter, the component Na was attenuated or delayed at T3, Cz and T4, exclusively on stimulation of the ear contralateral to the lesion. In 5 patients with temporal lobe lesions with receptive aphasia, the amplitude of component Pa was decreased on the lesion side (T3), regardless of the side of stimulation. These findings suggest that Na is generated from a subcortical structure and Pa is generated from the temporal cortex. In 25 patients with diffuse CNS lesions, V-Na interpeak latency was prolonged in 2 cases.

Original languageEnglish
Pages (from-to)427-432
Number of pages6
JournalJournal of Neurology
Volume238
Issue number8
DOIs
Publication statusPublished - Dec 1 1991

All Science Journal Classification (ASJC) codes

  • Neurology
  • Clinical Neurology

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