Parallel Cone Bipolar Pathways to a Ganglion Cell Use Different Rates and Amplitudes of Quantal Excitation (2000)
| Venue: | Journal of Neuroscience |
BibTeX
@ARTICLE{Department00parallelcone,
author = {Michael Freed Department and Michael A. Freed},
title = {Parallel Cone Bipolar Pathways to a Ganglion Cell Use Different Rates and Amplitudes of Quantal Excitation},
journal = {Journal of Neuroscience},
year = {2000},
volume = {20},
pages = {3956--3963}
}
OpenURL
Abstract
implies that the other bipolar types (b2 and b3) contribute many more quanta to the sustained depolarization (#46 synapse #1 sec #1 ). Type b1 probably contributes large quanta to the transient depolarization. Thus, bipolar cell types b1 and b2/b3 apparently constitute parallel circuits that convey, respectively, high and low frequencies. Key words: quantal rate; ganglion cell; vesicular release; retina; parallel pathways; ribbon synapse Commonly in the CNS, a signal is transmitted forward by multiple pathways operating in parallel. The f unction of such parallelism is rarely apparent, and thus the pathways are often considered merely "redundant." Yet redundancy is an unlikely explanation because there is selective pressure for the brain to use space efficiently (Panico and Sterling, 1995; Hsu et al., 1998). Possibly, parallel pathways might carry different components of the overall signal. Here, I e







