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首页> 外文期刊>Journal of Experimental Neuroscience >Suppression of Subsequent N1m Amplitude When the Masker Frequency is Different from the Signal:
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Suppression of Subsequent N1m Amplitude When the Masker Frequency is Different from the Signal:

机译：当掩蔽器频率不同于信号时，抑制随后的N1m幅度：

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摘要

When two tones are presented in a short interval of time, the presentation of the preceding tone (masker) suppresses the response evoked by the subsequent tone (signal). To address the processing in forward suppression, we applied 2- and 4-kHz maskers, followed by a 1-kHz signal at varying signal delays (0 to 320 ms) and measured the signal-evoked N1m. A two-way analysis of variance revealed a statistically significant effect for signal delay in both masker presentation conditions. The N1m peak amplitude at the signal delay of 320 ms was significantly larger than those of 10, 20, 40, and 80 ms (p 0.05). No significant enhancement for the very short signal delay was observed. The results suggest that the enhancement of N1m peak amplitude for short signal delay conditions is maximized when the frequency of the masker is identical to that of the signal.
机译：当在较短的时间间隔内呈现两个音调时，前一个音调（遮罩）的呈现会抑制后续音调（信号）引起的响应。为了解决前向抑制中的处理问题，我们应用了2 kHz和4 kHz屏蔽器，然后在变化的信号延迟（0到320 ms）中施加了1 kHz信号，并测量了信号诱发的N1m。对方差的双向分析显示，在两种掩膜呈现条件下，信号延迟在统计学上均具有显着效果。在320 ms的信号延迟处的N1m峰值幅度明显大于10、20、40和80 ms的峰值幅度（p <0.05）。没有观察到非常短的信号延迟的显着增强。结果表明，当屏蔽器的频率与信号的频率相同时，在短信号延迟条件下，N1m峰值幅度的增强最大。

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