Title :
An Preliminary Investigation of Speech-Evoked ABR with Two Stimulus Intensities
Author :
Fu, Qiu-Yang ; Liang, Yong ; Su, Yuan-Yuan ; Wang, Tao
Author_Institution :
Depts. of Otolaryngology at Nanfang Hosp., Southern Med. Univ., Guangzhou, China
Abstract :
Auditory brainstem response (ABR) evoked by speech syllable are investigated to present the reference of feature peaks, and explore the mechanism of neural encoding of speech in auditory brainstem in 60 and 80 dB SPL stimulus intensities. Typical speech-ABRs elicited by syllables /da/ were recorded to analyze the transient peak responses in terms of the latencies, amplitudes, areas, and slopes. The results show that in lower intensity condition, the latencies of feature peaks delay significantly. And a stronger correlation occurs between some features peaks was found as well, which may be functioning to maintain a high speech discrimination in poor acoustics circumstances.
Keywords :
auditory evoked potentials; neurophysiology; speech; auditory brainstem response; feature peak latency; gain 60 dB; gain 80 dB; neural speech encoding mechanism; speech discrimination; speech evoked ABR; speech syllable; Acoustics; Auditory system; Biomedical engineering; Delay; Diseases; Hospitals; Speech analysis; Speech processing; Speech synthesis; Transient analysis;
Conference_Titel :
Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2901-1
Electronic_ISBN :
978-1-4244-2902-8
DOI :
10.1109/ICBBE.2009.5162337
