Information transmission at 500 bits/s by action potentials in a mechanosensory neuron of the cockroach
Information transmission at 500 bits/s by action potentials in a mechanosensory neuron of the cockroach
复制标题
DOI：
10.1016/s0304-3940(98)00110-4
复制
发表时间：
1998-02-27
影响因子：
2.5
通讯作者：
Torkkeli, PH
中科院分区：
文献类型：
--
作者：
French, AS;Torkkeli, PH
动作电位广泛用于神经系统内的信息传递，但对动作电位的信息编码和传递速率了解甚少。在缺乏编码知识的情况下，大多数先前的工作都使用信噪比来估计信息容量。我们使用机械感觉神经元通过一种简单的编码方案来传输信息，这使我们能够直接测量传输速率。通过机械或电刺激，信息传输速率可达500比特/秒，比以往报道的实际动作电位传输速率都要高。然而，最大可能的信息长度随着传输速率的增加而急剧下降，从接近于100比特/秒时的无限到接近于500比特/秒时的100毫秒，这可能是由于神经元膜内的离子适应过程。(C) 1998由爱思唯尔科学爱尔兰有限公司出版。
Action potentials are widely used to transmit information within nervous systems but information encoding and transmission rates by action potentials are poorly understood. In the absence of knowledge about encoding, most previous work has used signal-to-noise ratios to estimate information capacities. We used a mechanosensory neuron to transmit information by a simple encoding scheme that allowed us to measure the transmission rate directly. Using either mechanical or electrical stimulation, information was transmitted at rates up to 500 bits/s, higher than ever reported before for real action potentials. However, the maximum possible message length decreased strongly with transmission rate, from similar to infinite at similar to 100 bits/s to similar to 100 ms at 500 bits/s, probably due to ionic adaptation processes within the neuronal membrane. (C) 1998 Published by Elsevier Science Ireland Ltd.