Speech-evoked brainstem frequency-following responses during verbal transformations due to world repetition
Speech-evoked brainstem frequency-following responses during verbal transformations due to world repetition
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DOI：
10.1016/s0013-4694(96)96006-x
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发表时间：
1997-01-01
期刊：
影响因子：
--
通讯作者：
Kuo, J
中科院分区：
文献类型：
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作者：
Galbraith, GC;Jhaveri, SP;Kuo, J
言语诱发的脑干频率跟随反应（FFR）被记录为同一刺激词的重复呈现，单词重复会导致虚幻的言语转换（VT），其中单词感知可能与实际刺激显着不同。先前的行为研究支持基于觉醒或注意力变化对 VT 的解释。记录水平和垂直偶极 FFR，以分别评估假定起源于听觉神经和中枢脑干的反应，当 IS 受试者正确听到刺激并报告 VT 时，记录 FFR。尽管水平和垂直偶极子FFR显示出不同的频率响应模式，偶极子在感知条件之间没有区别，但是，当受试者被分为低VT组和高VT组（基于VT试验的百分比）时，会产生显着的条件x组相互作用。这种相互作用显示VT试验期间Fm振幅的最大差异，相对于正确感知刺激的试验，低VT组显示出增加的振幅，而高VT组显示出减少的振幅。这些结果表明，由于注意力可能对脑干 FFR 产生影响，复杂信号的早期处理中存在可测量的受试者差异。Tile 目前的研究表明，FFR 对于理解人类语言很有用，因为它是在脑干听觉通路中编码和处理的。 (C) 1997 爱思唯尔科学爱尔兰有限公司
Speech-evoked brainstem frequency-following responses (FFRs) were recorded to repeated presentations of the same stimulus word, Word repetition results in illusory verbal transformations (VTs) in which word perceptions can differ markedly from the actual stimulus. Previous behavioral studies support an explanation of VTs based on changes in arousal or attention. Horizontal and vertical dipole FFRs were recorded to assess responses with putative origins in the auditory nerve and central brainstem, respectively, FFRs were recorded from IS subjects when they correctly heard the stimulus and when they reported VTs. Although horizontal and vertical dipole FFRs showed different frequency response patterns, dipoles did not differentiate between perceptual conditions, However, when subjects were divided into low- and high-VT groups (based on percentage of VT trials), a significant Condition x Group interaction resulted, This interaction showed the largest difference in Fm amplitudes during VT trials, with the low-VT group showing increased amplitudes, and the high-VT group showing decreased amplitudes, relative to trials in which the stimulus was correctly perceived. These results demonstrate measurable subject differences in the early processing of complex signals, due to possible effects of attention on the brainstem FFR, Tile present research shows that the FFR is useful in understanding human language as it is coded and processed in the brainstem auditory pathway. (C) 1997 Elsevier Science Ireland Ltd.