Accession Number : ADA299990

Title :   MMN And P3 Auditory Evoked Potentials within and Across Phonetic Categories.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Stokes, Martha A.

PDF Url : ADA299990

Report Date : 22 SEP 1995

Pagination or Media Count : 103

Abstract : The mismatch negativity (MNfN) and P3O0 of the auditory evoked response potentials were studied within and across phonetic categories of /ba/ and /pa/ differing in voice onset time. The MMN and P300 responses were present in all within and across phonetic conditions suggesting a discrimination at both temporal areas of the ERP. There were no differences in the MMN amplitude or latency measures. P3OO amplitude was found to be significantly larger for the across category conditions. These results suggest that ategorical processing may not occur in the temporal domain of the NfMN and may first occur in the time period of the P3OO. Measures of acoustic discrimination and linguistic categorization at the level of central processing are of great clinical value.

Descriptors :   *AUDITORY PERCEPTION, *PHONETICS, COGNITION, WAVEFORMS, CLINICAL MEDICINE, THESES, ACOUSTIC MEASUREMENT, ACOUSTIC SIGNALS, SPEECH RECOGNITION, SPEECH ANALYSIS, STIMULI, RESPONSE(BIOLOGY), VOICE COMMUNICATIONS, SOUND PITCH, SPEECH ARTICULATION, AUDIO FREQUENCY, PSYCHOACOUSTICS, NEUROPHYSIOLOGY, AUDITORY SIGNALS, PITCH DISCRIMINATION, PHONEMES, PSYCHOLINGUISTICS.

Subject Categories : Linguistics
      Anatomy and Physiology
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE