Neuroperceptual differences in consonant and vowel discrimination: As revealed by direct cortical electrical interference

D. Boatman, Charles B. Hall, M. H. Goldstein, R. Lesser, B. Gordon

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

The effects of direct cortical electrical interference on consonant and vowel discrimination were investigated in five patients with implanted subdural electrode arrays. Without electrical interference, patients' performance discriminating consonants and vowels was intact. With electrical interference, consonant discrimination was impaired at one electrode site in each patient on the superior temporal gyrus of the lateral left perisylvian cortex. Conversely, vowel and tone discrimination remained relatively intact when tested with electrical interference at the same site. Analysis of patients' consonant. discrimination errors revealed that neither differences in acoustic temporal structure nor syllable position fully account for the consonant-vowel perceptual dissociations elicited. Our data suggest that at the cortical level consonant and vowel perception are intrinsically distinct perceptual phenomena. The selective impairment of consonant, but not vowel, discrimination further suggests that consonant and vowel perception are distinguished by differences in relative dependence on the functional - perhaps integrative - resources of the left lateral superior temporal gyrus.

Original languageEnglish (US)
Pages (from-to)83-98
Number of pages16
JournalCortex
Volume33
Issue number1
StatePublished - 1997
Externally publishedYes

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Temporal Lobe
Implanted Electrodes
Acoustics
Electrodes
Discrimination (Psychology)

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Neuroperceptual differences in consonant and vowel discrimination : As revealed by direct cortical electrical interference. / Boatman, D.; Hall, Charles B.; Goldstein, M. H.; Lesser, R.; Gordon, B.

In: Cortex, Vol. 33, No. 1, 1997, p. 83-98.

Research output: Contribution to journalArticle

Boatman, D. ; Hall, Charles B. ; Goldstein, M. H. ; Lesser, R. ; Gordon, B. / Neuroperceptual differences in consonant and vowel discrimination : As revealed by direct cortical electrical interference. In: Cortex. 1997 ; Vol. 33, No. 1. pp. 83-98.
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