Receptive field sizes and neuronal encoding bandwidth are constrained by axonal conduction delays.

ABSTRACT: Studies on population coding implicitly assume that spikes from the presynaptic cells arrive simultaneously at the integrating neuron. In natural neuronal populations, this is usually not the case-neuronal signaling takes time and populations cover a certain space. The spread of spike arrival times depends on population size, cell density and axonal conduction velocity. Here we analyze the consequences of population size and axonal conduction delays on the stimulus encoding performance in the electrosensory system of the electric fish Apteronotus leptorhynchus. We experimentally locate p-type electroreceptor afferents along the rostro-caudal body axis and relate locations to neurophysiological response properties. In an information-theoretical approach we analyze the coding performance in

SUBMITTER: Hladnik TC 

PROVIDER: S-EPMC10446211 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature