刺激音の立ち上がりの変化が聴覚誘発脳磁界N1mに及ぼす影響の検討(<特集>生体医工学シンポジウム2006)

概要

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Although several studies have reported that the rise-time of sound stimulus affects on auditory evoked magnetic fields, effects of each parameter which vary in connection with rise-time-whole energy, risingspeed(dL/dt), spectrum-have not been clarified. In this study, N1m amplitudes and latencies were examined using noise-bursts with varying rise-time and constant energy or rising-speed. The results showed that N1m increased in amplitude and decreased in latency as rise-time increased(i.e, energy increased) under the rising-speedconstant condition. In contrast, N1m amplitudes and latencies did not vary significantly as rise-time increased(i.e., rising-speed decreased) under the energy-constant condition. These results indicate that sound energy has greater effects on N1m amplitude and latency than rising-speed.
社団法人日本生体医工学会の論文
2007-03-10