Auditory evoked potential correlates of speech sound discrimination

Michael Dorman

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

An electrophysiological correlate of the discrimination of stop consonants drawn from within and across phonetic categories was investigated by an auditory evoked response (AER) technique. Ss were presented a string of stimuli from the phonetic category [ba] (the standard stimulus) and were asked to detect the occurrence of a stimulus from the same phonetic category (within-category shift), or the occurrence of a stimulus from a different phonetic category [pa] (across-category shift). Both the across- and within-category shift stimuli differed equally from the standard stimulus in the time of onset of the first formant and in the amount of aspiration in the second and third formants. The NIP2 response of the AER was larger to the across-category shift than to the within-category shift. The within-category shift did not differ from a no-shift control. These findings suggest (1) that the AER can reflect the relative discriminability of stop consonants drawn from the same or different phonetic categories in a manner similar to other behavioral measures; (2) that the detailed acoustic representation of stop consonants is transformed into a categorized phonetic representation within 200 msec after stimulus onset.

Original languageEnglish (US)
Pages (from-to)215-220
Number of pages6
JournalPerception & Psychophysics
Volume15
Issue number2
DOIs
StatePublished - Mar 1974
Externally publishedYes

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Auditory Evoked Potentials
Speech Perception
Phonetics
discrimination
phonetics
stimulus
Acoustics
Evoked Potentials
Speech Sounds
Discrimination
Hearing
Stimulus
acoustics

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Sensory Systems
  • Psychology(all)

Cite this

Auditory evoked potential correlates of speech sound discrimination. / Dorman, Michael.

In: Perception & Psychophysics, Vol. 15, No. 2, 03.1974, p. 215-220.

Research output: Contribution to journalArticle

Dorman, Michael. / Auditory evoked potential correlates of speech sound discrimination. In: Perception & Psychophysics. 1974 ; Vol. 15, No. 2. pp. 215-220.
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