Sharply tuned cochlear nerve ensemble periodicity responses to sonic and ultrasonic frequencies
Sharply tuned cochlear nerve ensemble periodicity responses to sonic and ultrasonic frequencies
复制标题
急剧调谐的耳蜗神经整体对声波和超声波频率的周期性响应
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
K. Henry
中科院分区：
文献类型：
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作者：
K. Henry
摘要脊椎动物能够感知一系列谐波的音高，即使基频已经从声刺激中去除。在包括人类在内的几种动物的听觉系统中，已经观察到了与声音刺激的“缺失基频”相对应的神经周期性反应。本文研究了沙鼠耳蜗周期性神经反应。对声波和超声波刺激的周期性反应起源于这种动物的耳蜗内。声刺激，包括2-12个连续的谐波频率，被用来产生一个合奏耳蜗神经周期性反应，记录从耳蜗的圆窗。这种反应的频率等于丢失的基波，而不是谐波刺激的频率。用于产生周期性响应的刺激的前向掩蔽用于产生尖锐的调谐曲线，其中尖端频率对应于谐波而不是周期性。这些函数的锐度随着谐波频率的增加而增加，直到至少38 kHz。这一特性可能与许多啮齿动物利用超声波发声的接收有关。
Abstract Vertebrates are able to perceive the pitch of a series of harmonics, even when the fundamental frequency has been removed from the acoustic stimulus. Neural periodicity responses corresponding to the “missing fundamental” frequency of sonic stimuli have been observed in the auditory system of several animal species, including our own. This paper examines periodic cochlear neural responses of the gerbil. Periodicity responses to both sonic and ultrasonic stimuli originate within the cochlea of this animal. Acoustic stimuli, consisting of 2–12 successive harmonic frequencies, were used to generate an ensemble cochlear nerve periodicity response that was recorded from the round window of the cochlea. This response had a frequency equal to that of the missing fundamental, and not to those of the harmonic stimuli. Forward masking of the stimuli used to produce the periodicity response was used to generate sharp tuning curves, with tip frequencies corresponding to the harmonics and not to the periodicities. The sharpness of these functions increased as the frequencies of the harmonics increased, up to at least 38 kHz. This property could be related to reception of ultrasonic vocalizations utilized by many rodent species.
DOI：
10.1016/0168-5597(94)90100-7
发表时间：
1994-07-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
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作者：
GALBRAITH, GC
通讯作者：
GALBRAITH, GC