Winkler I, Schröger E
Institute for Psychology, Hungarian Academy of Sciences, Budapest.
Neuroreport. 1995 Mar 7;6(4):690-4. doi: 10.1097/00001756-199503000-00026.
Responses to infrequently exchanging two segments of a complex tonal pattern were tested for the presence of the mismatch negativity event-related brain potential component. This component is elicited when an auditory stimulus differs from the sensory memory trace of the previously presented repetitive sound. Because the segments exchanged in the tonal pattern differed from each other only in their durations, the elicitation of the mismatch response revealed that the temporal structure of sound patterns is encoded in the traces underlying the mismatch process. Results showing that the mismatch response was elicited even when the tonal patterns were presented continuously (i.e. without silent intervals separating successive patterns) demonstrate the automatic detection of periodicity in the acoustic stream.
针对复杂音调模式中两个片段不频繁交换的情况进行测试，以检测失配负波事件相关脑电位成分的存在。当听觉刺激与先前呈现的重复声音的感觉记忆痕迹不同时，就会引发该成分。由于音调模式中交换的片段仅在持续时间上彼此不同，失配反应的引发表明声音模式的时间结构被编码在失配过程所基于的痕迹中。结果表明，即使音调模式连续呈现（即没有无声间隔分隔连续模式）时也会引发失配反应，这证明了对声流中周期性的自动检测。
