On the ability of neurons in the barn owl's inferior colliculus to sense brief appearances of interaural time difference
On the ability of neurons in the barn owl's inferior colliculus to sense brief appearances of interaural time difference
复制标题
仓鸮下丘神经元感知耳间时间差短暂出现的能力
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
H. Wagner
中科院分区：
文献类型：
--
作者：
H. Wagner
本文研究了仓鸮（Tyto alba）下丘神经元感知耳间时间差（ITD）的能力，ITD是仓鸮方位音定位的主要线索。在实验中，ITD调谐期间测量的掩模-探针-掩模序列的介绍。探头由具有恒定ITD的噪声组成，而掩模由双耳不相关的噪声组成。丘神经元通过表现出从非调谐到调谐再回到非调谐的快速变化来区分探测噪声和掩蔽噪声。描述探测持续时间与ITD调谐程度之间关系的曲线类似于时间常数约为2 ms的漏积分过程。许多神经元是ITD-调谐的。这些极短的有效探测持续时间被解释为计算ITD的通路内的神经元会聚的证据。ITD调谐所需的最小探测持续时间与神经元频率调谐的带宽以及神经元的最佳频率无关。许多具有不同最佳频率的窄调谐神经元会聚以形成宽带神经元。为了产生短的有效探测持续时间，收敛必须发生在强的时间同步性。
SummaryThis paper investigates the ability of neurons in the barn owl's (Tyto alba) inferior colliculus to sense brief appearances of interaural time difference (ITD), the main cue for azimuthal sound localization in this species. In the experiments, ITD-tuning was measured during presentation of a mask-probe-mask sequence. The probe consisted of a noise having a constant ITD, while the mask consisted of binaurally uncorrelated noise. Collicular neurons discriminated between the probe and masking noise by showing rapid changes from untuned to tuned and back to untuned responses.The curve describing the relation between probe duration and the degree of ITD-tuning resembled a leaky-integration process with a time constant of about 2 ms. Many neurons were ITD-tuned when probe duration was below 1 ms. These extremely short effective probe durations are interpreted as evidence for neuronal convergence within the pathway computing ITD. The minimal probe duration necessary for ITD-tuning was independent of the bandwidth of the neurons' frequency tuning and also of the best frequency of a neuron. Many narrowly tuned neurons having different best frequencies converge to form a broad-band neuron. To yield the short effective probe durations the convergence must occur in strong temporal synchronism.
青蛙听觉神经纤维的时间分辨率。
DOI：
10.1121/1.397951
发表时间：
1989
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Dunia,R;Narins,PM
通讯作者：
Narins,PM
猫头鹰脑干中耳间相位差的神经图。
DOI：
10.1073/pnas.83.21.8400
发表时间：
1986
影响因子：
11.1
作者：
Sullivan,WE;Konishi,M
通讯作者：
Konishi,M