Ivey R G, Schmidt H B
Clinical Audiology Centre, London, Ontario, Canada.
J Am Acad Audiol. 1993 May;4(3):182-8.
This study used the "oddball" counting paradigm to examine the possible habituation of the auditory P300 response. Twenty subjects kept a mental record of the number of rarely occurring tone pips presented in a series of more frequently occurring tone pips. Data were collected continuously until responses to 150 rare tone pips were obtained. Findings indicated that the P300 complex decreased in amplitude as a result of repeated stimulation. The decline was logarithmic, not linear, which suggests a stabilization of the amplitude over time. We suggest that the attenuation of amplitude was habituation and not a result of a recovery cycle.
本研究采用“异常球”计数范式来检验听觉P300反应可能的习惯化。20名受试者在心里记录一系列频繁出现的音调短音中偶尔出现的音调短音的数量。持续收集数据，直到获得对150个罕见音调短音的反应。研究结果表明，由于重复刺激，P300复合波的振幅降低。这种下降是对数性的，而非线性的，这表明振幅随时间趋于稳定。我们认为振幅的衰减是习惯化的结果，而非恢复周期的结果。
