Stability of the Cortical Sensory Waveforms, the P1-N1-P2 Complex and T-Complex, of Auditory Evoked Potentials.
Stability of the Cortical Sensory Waveforms, the P1-N1-P2 Complex and T-Complex, of Auditory Evoked Potentials.
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听觉诱发电位的皮质感觉波形、P1-N1-P2 复合体和 T 复合体的稳定性。
DOI：
10.1044/2017_jslhr-h-16-0056
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Griffiths,Tara
中科院分区：
文献类型：
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作者：
Wagner,Monica;Shafer,ValerieL;Haxhari,Evis;Kiprovski,Kevin;Behrmann,Katherine;Griffiths,Tara
研究目的：听觉刺激编码受损的非典型皮层感觉波形可能是由于皮层对语音特征变化的反应不一致所致。因此，本研究评估的P1-N1-P2复合体和T-复合体的多个生产的口头nonwords在48名成年人的受试者内的稳定性，为未来的研究提供基准探测听觉processingdeficits.MethodResponse试验分裂（分裂时代的平均值）为每个4字类型的每个受试者和波形形态的相似性进行比较。波形形态协会之间进行了评估50和600毫秒，时间框架反映光谱时间特征处理的刺激中使用的study.ResultsUsing约70个试验中的每个分裂时期，P1-N1-P2复杂的被认为是高度稳定的，与高的积极协会发现所有科目至少3个字类型。T-复杂的是更多的变量，高的正相关发现所有科目至少1字type.ConclusionsThe P1-N1-P2分裂时期在组和个人水平和T-复杂组水平可以用来评估一致性的神经反应在个人与听觉处理缺陷。与P1-N1-P2复合体相关的T复合体在个体中可以提供与语音加工有关的信息。
PurposeAtypical cortical sensory waveforms reflecting impaired encoding of auditory stimuli may result from inconsistency in cortical response to the acoustic feature changes within spoken words. Thus, the present study assessed intrasubject stability of the P1-N1-P2 complex and T-complex to multiple productions of spoken nonwords in 48 adults to provide benchmarks for future studies probing auditory processing deficits.MethodResponse trials were split (split epoch averages) for each of 4 word types for each subject and compared for similarity in waveform morphology. Waveform morphology association was assessed between 50 and 600 ms, the time frame reflecting spectro-temporal feature processing for the stimuli used in the study.ResultsUsing approximately 70 trials in each split epoch, the P1-N1-P2 complex was found to be highly stable, with high positive associations found for all subjects for at least 3 word types. The T-complex was more variable, with high positive associations found for all subjects to at least 1 word type.ConclusionsThe P1-N1-P2 split epochs at group and individual levels and the T-complex at group level can be used to assess consistency of neural response in individuals with auditory processing deficits. The T-complex relative to the P1-N1-P2 complex in individuals can provide information pertaining to phonological processing.