AP,BSR,MLR及びSVRの同時記録法

概要

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The test-retest reliability and the threshold differences among the responses of action potential (AP), brain stem response (BSR), middle latency response (MLR), and slow vertex response (SVR) in the same individual are still uncertain. This is partly due to the fact that each response has not been obtained in the same condition.The response wave form might be affected by spontaneous EEG or various artifacts during the test period. Then, it must be one of the important things that these responses should be obtained during the same recording period. From this standpoint of view, a new device is developped, that is, so-called simultaneous recording of various kinds of responses (AP, BSR, MLR, and SVR).A single click and click train composed of 30 clicks are generated alternatively at the interval of about 3 seconds. The SVR to single click is averaged by one averaging computor. Other responses (AP, BSR, MLR) to click train are averaged by another computor with different analysis time. One series are composed of 50 click train and 50 single clicks. So, there are 50 samples for SVR and 1500 samples for AP, BSR and MLR.In the trial on 5 adults with normal hearing, it was noticed that the distribution of artifacts was almost equal among these responses. Thus, the comparative study of these responses would be possible by this recording technique.
社団法人日本耳鼻咽喉科学会の論文