HUMAN AUDITORY SUSTAINED POTENTIALS .2. STIMULUS RELATIONSHIPS
HUMAN AUDITORY SUSTAINED POTENTIALS .2. STIMULUS RELATIONSHIPS
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DOI：
10.1016/0013-4694(78)90004-4
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发表时间：
1978-01-01
期刊：
影响因子：
--
通讯作者：
PROULX, GB
中科院分区：
文献类型：
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作者：
PICTON, TW;WOODS, DL;PROULX, GB
从人类头皮记录的听觉持续电位的幅度随着刺激强度的增加而增加。在刺激呈现速度较快时，其幅度会减小，但比例上小于瞬态起始听觉诱发电位的幅度。这种速率效应的频率特异性很复杂，表明头皮记录的听觉持续电位可能有 2 个潜在组成部分。当刺激的音调频率较高时，听觉持续电位的幅度较小。随着刺激持续时间的延长，听觉持续电位的幅度会出现一些适应。当声音以双耳方式呈现时，该电势的幅度比单耳方式更大，并且具有对称的冠状头皮分布，不受刺激的耳朵的影响。
The auditory sustained potential recorded from the human scalp increases in amplitude with increasing stimulus intensity. At rapid rates of stimulus presentation its amplitude decreases but proportionately less so than the amplitude of the transient onset auditory evoked potential. The frequency specificity of this rate effect is complex, suggesting that there may be 2 underlying components of the scalp-recorded auditory sustained potential. The amplitude of the auditory sustained potential is smaller when the tonal frequency of the stimulus is higher. With prolonged stimulus durations there is some adaptation of the amplitude of the auditory sustained potential. This potential is larger in amplitude when sounds are presented binaurally than monaurally, and has a symmetrical coronal scalp distribution that is unaffected by the ear of stimulation.