橋本 修左

This paper describes the effects of fluctuating noise environments on human arousal/alertness levels. The amplitude fluctuating pink noise with Leq 50dB(A) were used as noise sources. The noise fluctuation characteristics were 1/f^0, 1/f, 1/f^2 and steady. Subjets performing a monotonous vigilance task were exposed to noises and their physiological responses were measured. Skin potential levels throughout the task and sleep latency after the task were measured using a telemeter system. Task performance and impressions to the noise were also evaluated. Results showed that subjects' arousal level, task performance and impressions were influenced by fluctuation characteristics.