Department of Communication Sciences and Disorders, University of Cincinnati, Cincinnati, OH 45267-0379, USA.
Int J Audiol. 2010 Apr;49(4):277-85. doi: 10.3109/14992020903321759.
To describe the adaptive pattern of cortically generated auditory evoked potentials elicited by repeated stimuli via cochlear implants (CIs), the late auditory evoked potential (LAEP) was collected from nine postlingually deafened adult CI users. Tone bursts were presented in 30 trains consisting of 10 tone bursts each, with inter-stimulus intervals (ISIs) of 0.7 ms and inter-train intervals (ITIs) of 15s. The response to the first stimulus and the response to later tone bursts in the train were compared. Results showed that the LAEP for the first tone burst was larger than that for later tone bursts, displaying an adaptive pattern. This pattern appeared to be more prominent in CI users with good speech perception performance than in those with poorer performance. This finding is meaningful in the context of our future research to restore normal adaptation in CI users to improve their speech perception performance.
为了描述人工耳蜗（CI）刺激重复引发的皮质听觉诱发电位的适应模式，我们采集了 9 名成年后天聋的 CI 用户的晚期听觉诱发电位（LAEP）。声脉冲以 30 个序列呈现，每个序列包含 10 个声脉冲，刺激间隔（ISIs）为 0.7 毫秒，序列间间隔（ITIs）为 15 秒。比较了对第一个刺激和序列中后面的声脉冲的反应。结果表明，第一个声脉冲的 LAEP 大于后面的声脉冲，呈现出一种适应模式。这种模式在言语感知表现较好的 CI 用户中比在表现较差的 CI 用户中更为明显。这一发现对于我们未来的研究具有重要意义，即恢复 CI 用户的正常适应能力，以提高他们的言语感知表现。
