Woods D L, Alain C, Covarrubias D, Zaidel O
Department of Neurology and Neurobiology Center, UC Davis, Martinez.
Hear Res. 1993 Mar;66(1):46-52. doi: 10.1016/0378-5955(93)90258-3.
Three experiments were performed, two comparing the peak latencies of auditory evoked potentials (AEPs) elicited by 250 Hz and 4000 Hz tone pips and a third comparing simple reaction times (RTs) to the same stimuli. In the AEP experiments, the latencies of brainstem, middle and long-latency components were delayed following 250 Hz tone pips in comparison with the latencies of the same components evoked by loudness-matched 4000 Hz tones. Frequency-related latency differences increased with component latency, ranging from less than 1.0 ms for wave V of the brainstem AEP, to more than 20.0 ms for the cortical N1 component. Interpeak latency differences were also significantly lengthened following the 250 Hz tone pips. In the behavioral study, RTs were 14.6 ms slower following 250 than 4000 Hz tone pips. The results suggest that the time required for the sensory analysis of auditory signals varies inversely with their frequency.
进行了三项实验，其中两项比较了由250赫兹和4000赫兹短纯音诱发的听觉诱发电位（AEP）的峰潜伏期，第三项比较了对相同刺激的简单反应时间（RT）。在AEP实验中，与响度匹配的4000赫兹音调诱发的相同成分的潜伏期相比，250赫兹短纯音之后脑干、中潜伏期和长潜伏期成分的潜伏期延迟。频率相关的潜伏期差异随成分潜伏期增加，从脑干AEP的V波小于1.0毫秒到皮层N1成分超过20.0毫秒。250赫兹短纯音之后，峰间潜伏期差异也显著延长。在行为学研究中，250赫兹短纯音之后的反应时间比4000赫兹短纯音慢14.6毫秒。结果表明，听觉信号的感觉分析所需时间与其频率成反比。
