Relation between auditory stimulus intensity and response of P300 with eyes-opened and eyes-closed state

Author

Fukami, Tadanori ; Shiina, Tsuyoshi ; Ishikawa, Fumito ; Saito, Yoichi

Author_Institution

Inst. of Inf. Sci. & Electron., Tsukuba Univ., Ibaraki, Japan

Volume

4

fYear

1998

fDate

29 Oct-1 Nov 1998

Firstpage

1996

Abstract

For the purpose of examining how the auditory stimulus level and the eyesight have a mutual influence on ERP, we tried to investigate the relation between auditory stimulus level and latency of P300 with eyes-opened (EO) and eyes-closed (EC) state. Two auditory stimulus levels are selected as high-intensity (HI; 80 dBNHL) and low intensity (LI; 10 dBNHL). It has been regarded that the latency of P300 became longer as the auditory stimulus level decreased while the latency was not so different between EO and EC. However, we found that the latter did not always hold true though the former coincided with our experimental results. The latency at HI tended to be longer comparatively with EO, while in the case of LI the latency was longer with EC. Consequently, the latency variation resulting from the change of stimulus level with EC was larger than with EO. In this paper, we evaluated this phenomenon more quantitatively

Keywords

auditory evoked potentials; electroencephalography; visual perception; waveform analysis; P300 latency; P300 response; auditory stimulus intensity; brain activity; event related potential; eyes-closed state; eyes-opened state; eyesight influence; high-intensity; low intensity; Auditory system; Delay; Electroencephalography; Enterprise resource planning; Fatigue; Fluctuations; Headphones; Information analysis; Psychology; Random sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE

Conference_Location

Hong Kong

ISSN

1094-687X

Print_ISBN

0-7803-5164-9

Type

conf

DOI

10.1109/IEMBS.1998.746995

Filename

746995