Latency of evoked neuromagnetic M100 reflects perceptual and acoustic stimulus attributes
Latency of evoked neuromagnetic M100 reflects perceptual and acoustic stimulus attributes
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DOI：
10.1097/00001756-199810050-00024
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发表时间：
1998-10-05
期刊：
影响因子：
1.7
通讯作者：
Poeppel, D
中科院分区：
文献类型：
--
作者：
Roberts, TPL;Ferrari, P;Poeppel, D
听觉诱发的神经磁场成分的潜伏期已经被证明反映或编码刺激属性。特别是，M100分量，发生类似于100毫秒后刺激开始有一个延迟，这取决于刺激音高，频谱复杂性和演示水平。本研究使用脑磁图记录由100 Hz和1 kHz能量的不同比例组成的双音复合体诱发的神经磁场。这些都被认为是分类，证明了分类和反应时间的测量。研究发现，M100延迟也有明显变化，即具有两个具有尖锐界面的平台区域的特征。因此，我们发现M100潜伏期不仅反映了刺激的声学属性，而且还反映了这种感知特性。(C)1998年利平科特威廉姆斯&威尔金斯。
THE latency of components of the auditory evoked neuromagnetic field has been shown to reflect, or encode, stimulus attributes. In particular, the M100 component, occurring similar to 100 ms post stimulus onset has a latency that depends on stimulus pitch, spectral complexity and presentation level. This study used magnetoencephalography to record neuromagnetic fields evoked by presentation of two-tone complexes consisting of various proportions of 100 Hz and 1 kHz energy. These are perceived categorically, as evidenced by classification and reaction time measurements. It is found that the M100 latency also varies categorically, that is, characterized by two plateau regions with a sharp interface. Thus, we find that not only does the M100 latency reflect acoustic attributes of a stimulus, but also such perceptual characteristics. (C) 1998 Lippincott Williams & Wilkins.