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首页> 外文期刊>The European Journal of Neuroscience >Do tone duration changes that elicit the mismatch negativity also affect the preceding middle latency responses?
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Do tone duration changes that elicit the mismatch negativity also affect the preceding middle latency responses?

机译：音调持续时间变化，引出不匹配消极性也会影响前延迟响应的前延迟响应？

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摘要

The human brain can automatically detect sound changes. Previous studies have reported that rare sounds presented within a sequence of repetitive sounds elicit the mismatch negativity (MMN) in the absence of attention in the latency range of 100-250 ms. On the other hand, a previous study discovered that occasional changes in sound location enhance the middle latency response (MLR) elicited in the latency range of 10-50 ms. Several studies have reported an increase in the amplitude of the MLR within the frame of oddball paradigms such as frequency and location changes. However, few studies have been conducted on paradigms employing a duration change. The purpose of the present study was to examine whether the peak amplitudes of the MLR components are enhanced by a change in duration. Twenty healthy Japanese men (age: 23.9 +/- 2.9 years) participated in the present study. We used an oddball paradigm that contained standard stimuli with a duration of 10 ms and deviant stimuli with a duration of 5 ms. The peak amplitudes of the MLR for the deviant stimuli were then compared with those for the standard stimuli. No changes were observed in the peak amplitude of the MLR resulting from a duration change, whereas a definite MMN was elicited. The amplitude of the MLR was increased within the frame of oddball paradigms such as frequency and location changes. By contrast, the amplitude of the MLR was not changed within the duration change oddball paradigm that elicited the MMN.
机译：人脑可以自动检测声音变化。之前的研究报告称，在100-250毫秒的潜伏期内，在没有注意的情况下，重复声音序列中出现的罕见声音会引发失配负性（MMN）。另一方面，之前的一项研究发现，声音位置的偶尔变化会增强在10-50毫秒潜伏期范围内诱发的中潜伏期反应（MLR）。有几项研究报告，在频率和位置变化等古怪范例的框架内，MLR的振幅增加。然而，很少有研究对采用持续时间变化的范式进行研究。本研究的目的是检验MLR成分的峰值振幅是否因持续时间的变化而增强。20名健康的日本男性（年龄：23.9+/-2.9岁）参与了本研究。我们使用了一个古怪的范式，其中包含持续时间为10ms的标准刺激和持续时间为5ms的异常刺激。然后将异常刺激的MLR峰值振幅与标准刺激的峰值振幅进行比较。未观察到持续时间变化引起的MLR峰值振幅的变化，而诱发了明确的MMN。MLR的振幅在频率和位置变化等异常情况下增加。相比之下，MLR的振幅在引发MMN的持续时间变化古怪范式内没有改变。

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