Relationships between electrophysiological characteristic of speech evoked auditory brainstem response and mandarin monosyllable discriminative ability / 中国耳鼻咽喉头颈外科

ABSTRACT

[ABSTRACT]OBJECTIVETo investigate the relationships between electrophysiological characteristic of speech evoked auditory brainstem response and Mandarin phonetically balanced maximum, so as to provide more clues for the mechanism of speech cognitive behavior. METHODSThe speech discrimination scores were obtained by Mandarin phonemic-balanced monosyllable lists via speech audiometric software in forty-one ears of normal hearing adults. Their s-ABRs were recorded with speech syllables da with the intensity of phonetically balanced maximum (PBmax). The electrophysiological characteristic of s-ABR, as well as the relationships between PBmax and s-ABR parameters including latency in time domain, fundamental frequency (F0) and first formant (F1) in frequency domain were analyzed statistically.RESULTS While divided the subjects into three groups by PBmax1= 100%, 100% parameters including latencies of all feature peaks, amplitudes of F0 and F1 (P<0.05). Amplitudes of F0 and F1 showed a strongest significant positive correlation with PBmax respectively, and latencies of all the feature peaks showed a significant negative correlation with PBmax.CONCLUSIONThese electrophysiological characteristics of s-ABR showed a close association with Mandarin monosyllable discriminative abilities, which may be formed as an objective auditory measure to assess speech recognition, and may be applied jointly or separately for further investigation of speech perception and temporal processing abilities.