Neuromodulation of central pattern generators in invertebrates and vertebrates.

Abstract:

:Central pattern generators are subject to extensive modulation that generates flexibility in the rhythmic outputs of these neural networks. The effects of neuromodulators interact with one another, and modulatory neurons are themselves often subject to modulation, enabling both higher order control and indirect interactions among central pattern generators. In addition, modulators often directly mediate the interactions between functionally related central pattern generators. In systems such as the vertebrate respiratory central pattern generator, multiple pacemaker types interact to produce rhythmic output. Modulators can then alter the relative contributions of the different pacemakers, leading to substantial changes in motor output and hence to different behaviors. Surprisingly, substantial changes in some aspects of the circuitry of a central pattern generator, such as a several-fold increase in synaptic strength, can sometimes have little effect on the output of the CPG, whereas other changes have profound effects.

journal_name

Curr Opin Neurobiol

authors

Dickinson PS

doi

10.1016/j.conb.2006.10.007

subject

Has Abstract

pub_date

2006-12-01 00:00:00

pages

604-14

issue

6

eissn

0959-4388

issn

1873-6882

pii

S0959-4388(06)00148-6

journal_volume

16

pub_type

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