Neuromodulation of central pattern generators in invertebrates and vertebrates

被引:91
作者
Dickinson, Patsy S. [1 ]
机构
[1] Bowdoin Coll, Dept Biol, Brunswick, ME 04011 USA
关键词
D O I
10.1016/j.conb.2006.10.007
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
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.
引用
收藏
页码:604 / 614
页数:11
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