集中維持機能 (TAF) に関する研究 (XVII) : 特に騒音負荷の影響と誘発脳波

概要

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Changes of TAF, EEG and Average Auditory Evoked Response (AER) caused by the exposure to two qualitatively different kinds of noise (white noise and variable noise) with the same sound pressure of 90 phon for 1 hour were analyzed. The results obtained are as follows:1) TAF-L and TAF-D of the white noise group after the exposure significantly lowered in comparison with the values before exposure, whereas in the variable noise group they tended to lower after the exposure.2) The difference in EEG before and after exposure was greater in the white noise group than in the variable noise group.3) Comparing each frequency band of EEG during the exposure by group a significant difference was observed between the two groups and it was noted that the exposure to white noise greatly affected the EEG.4) The difference in N1 latency of AER before and after the exposure was greater in the white noise group than in the variable noise group.5) In the white noise group, a significant correlation was observed between the lowering of TAF-L and the delay of N1 latency of AER.The present study on AER is further evidence of the accuracy of TAF in measuring stress.
日本衛生学会の論文