The effect of stimulus expectancy on dishabituation of auditory evoked potentials
The effect of stimulus expectancy on dishabituation of auditory evoked potentials
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DOI：
10.1016/j.ijpsycho.2010.08.006
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发表时间：
2010-12-01
影响因子：
3
通讯作者：
Jansen, Ben H.
中科院分区：
文献类型：
--
作者：
Viswanathan, Deepa;Jansen, Ben H.
目标：预先了解感觉刺激的类型和时间可以调节电生理反应，并可以导致短期习惯。在这里，我们探讨去习惯是否受到类似的影响。方法：用五种不同的听觉刺激范式对 17 名健康受试者进行测试，以了解刺激序列长度和/或异常刺激的知识是否会影响听觉诱发电位的去习惯量。此外，还确定了重复刺激和异常刺激之间的差异程度是否会影响去习惯的程度。结果：刺激复杂性是去习惯程度的主要决定因素，其次是缺乏对列车长度的了解。不知道异常刺激对去习惯影响很小或没有影响。此外，P200 受预期影响最大，而 P50 则完全不受影响。结论：预知感觉刺激的类型和时间可以调节去习惯的程度。意义：之前的报告表明，预期确实会影响（某些）诱发电位成分。在这里，我们将这一知识扩展到预期对去习惯的影响。 (C) 2010 Elsevier B.V. 保留所有权利。
Objectives: Having foreknowledge of the type and timing of sensory stimulation modulates the electrophysiological response and can result in short-term habituation. Here we explore if dishabituation is similarly affected.Methods: Seventeen healthy subjects were tested with five different auditory stimuli paradigms to see if knowledge of the stimulus train length and/or deviant stimulus affects the amount of dishabituation of auditory evoked potentials. Furthermore it was determined if the degree of difference between the repeating stimulus and deviant stimulus affected the amount of dishabituation.Results: stimulus complexity is the main determinant of the degree of dishabituation, followed by lack of knowledge about train length. Not knowing the deviant stimulus has little or no effect on dishabituation. Also, P200 is the most affected by expectancy and P50 not at all.Conclusions: Foreknowledge of the type and timing of sensory stimulation modulates the degree of dishabituation.Significance: Previous reports have shown that expectancy does affect (certain) evoked potential components. Here we extend this knowledge to the effect of expectancy on dishabituation. (C) 2010 Elsevier B.V. All rights reserved.