Information analysis of posterior canal afferents in the turtle, Trachemys scripta elegans.
Information analysis of posterior canal afferents in the turtle, Trachemys scripta elegans.
复制标题
DOI：
10.1016/j.brainres.2011.08.016
复制
发表时间：
2012-01-24
期刊：
影响因子：
2.9
通讯作者：
Neiman AB
中科院分区：
文献类型：
--
作者：
Rowe MH;Neiman AB
We have used sinusoidal and band limited Gaussian noise stimuli along with information measures to characterize the linear and non-linear responses of morpho-physiologically identified posterior canal (PC) afferents and to examine the relationship between mutual information rate and other physiological parameters Our major findings are: 1) spike generation in most PC afferents is effectively a stochastic renewal process, and spontaneous discharges are fully characterized by their first order statistics; 2) a regular discharge, as measured by normalized coefficient of variation (cv*), reduces intrinsic noise in afferent discharges at frequencies below the mean firing rate; 3) coherence and mutual information rates, calculated from responses to band limited Gaussian noise, are jointly determined by gain and intrinsic noise (discharge regularity), the two major determinants of signal to noise ratio in the afferent response; 4) measures of optimal non-linear encoding were only moderately greater than optimal linear encoding, indicating that linear stimulus encoding is limited primarily by internal noise rather than by non-linearities; 5) a leaky integrate and fire model reproduces these results and supports the suggestion that the combination of high discharge regularity and high discharge rates serves to extend the linear encoding range of afferents to higher frequencies. These results provide a framework for future assessments of afferent encoding of signals generated during natural head movements and for comparison with coding strategies used by other sensory systems.
登录
查看更多内容
影响因子：
2.5
作者：
Brichta, AM;Goldberg, JM
通讯作者：
Goldberg, JM
影响因子：
2.5
作者：
Chacron, MJ
通讯作者：
Chacron, MJ
影响因子：
2.5
作者：
BAIRD, RA;DESMADRYL, G;GOLDBERG, JM
通讯作者：
GOLDBERG, JM
影响因子：
2.5
作者：
Brichta, AM;Goldberg, JM
通讯作者：
Goldberg, JM
DOI：
10.1016/j.brainresprot.2004.02.004
发表时间：
2004-06-01
期刊：
BRAIN RESEARCH PROTOCOLS
影响因子：
--
作者：
Boyer, S;Ruel, J;Chabbert, C
通讯作者：
Chabbert, C