ON THE FREQUENCY LIMITS OF BINAURAL BEATS
ON THE FREQUENCY LIMITS OF BINAURAL BEATS
复制标题
DOI：
10.1121/1.1906629
复制
发表时间：
1950-01-01
影响因子：
2.4
通讯作者：
HEDLUN, JM
中科院分区：
文献类型：
--
作者：
LICKLIDER, JCR;WEBSTER, JC;HEDLUN, JM
测量了双耳节拍的频率限制和理论的双耳节拍，同步放电的基础上，在2个听觉神经，概述。将两个不同频率的正弦信号分别导入双耳，发现双耳搏动的特征性响度波动或粗糙度消失的差异。400 c.p.s.附近的频率差异最大。双耳搏动超过1000 c.p.s.，但需要认真对待。该理论是为了解释这样一个事实，即在低频和高频下的差异都小于400 c.p.s.附近的差异，将神经元兴奋的Hill-Rashevsky理论的元素与Wever的截击理论的元素相结合。在低频率下，神经元可以在某种程度上与刺激波形同步放电，但不能在突触总和所需的时间间隔内一致。在高频率下，神经元必须轮流放电，相对较少的神经元可以参与任何特定的放电。然而，在中频，每个神经元参与许多齐射，并且参与每个齐射的神经元几乎同时放电。其结果是，在中频同步是相对精确的，在每个传入通路，当2传入流加入到一个共同的神经中心，节拍出现。
Measurements were made of the frequency limits of binaural beats and a theory of binaural beats, based on synchronous discharges in the 2 auditory nerves, is outlined. Two sinusoids of different frequencies were led separately to the 2 ears, and the difference that marked the disappearance of the fluctuating loudness or roughness that is characteristic of binaural beats was detd. The difference was maximal for frequencies of the neighborhood of 400 c.p.s. Binaural beats were heard above 1000 c.p.s., but careful attention was required. The theory, given to account for the fact that the difference is smaller both at low and at high frequencies than it is near 400 c.p.s., combines elements of the Hill-Rashevsky theory of the excitation of neurons with elements of Wever''s volley theory. At low frequencies neurons can discharge in some degree of synchrony with the stimulus wave form, yet fail to coincide within the time interval necessary for synaptic summation. At high frequencies the neurons must take turns discharging, and relatively few can participate in any given volley. At intermediate frequencies, however, each neuron participates in many volleys and the neurons participating in each volley fire almost simultaneously. The result is that at intermediate frequencies synchrony is relatively precise in each afferent pathway and, when the 2 afferent streams join in a common neural center, beats appear.