Kujala T, Alho K, Paavilainen P, Summala H, Näätänen R
Department of Psychology, University of Helsinki, Finland.
Electroencephalogr Clin Neurophysiol. 1992 Sep-Oct;84(5):469-72. doi: 10.1016/0168-5597(92)90034-9.
Event-related potentials (ERPs) to a change in the locus of origin of a repetitive sound were studied in early blind human subjects. It was found that the N2b component of the ERP was posteriorly distributed on the scalp to that in the sighted control subjects. This suggests that the blind might use, to a larger extent than the sighted, parietal, or perhaps even occipital, brain areas in sound localization. The present results thus appear to demonstrate plastic changes in neural populations involved in processing of auditory space following early loss of vision.
在早期失明的人类受试者中，研究了与重复性声音来源位置变化相关的事件相关电位（ERP）。结果发现，与有视力的对照受试者相比，ERP的N2b成分在头皮上的分布更靠后。这表明，盲人在声音定位时可能比有视力的人更大程度地利用顶叶甚至枕叶脑区。因此，目前的结果似乎证明了早期失明后参与听觉空间处理的神经群体发生了可塑性变化。
