Neuronal control of swimming behavior: Comparison of vertebrate and invertebrate model systems

被引:71
作者
Mullins, Olivia J. [1 ,2 ]
Hackett, John T. [2 ,3 ]
Buchanan, James T. [4 ]
Friesen, W. Otto [1 ,2 ]
机构
[1] Univ Virginia, Dept Biol, Charlottesville, VA 22904 USA
[2] Univ Virginia, Neurosci Grad Program, Charlottesville, VA 22904 USA
[3] Univ Virginia, Dept Mol Physiol & Biol Phys, Charlottesville, VA 22904 USA
[4] Marquette Univ, Dept Biol Sci, Milwaukee, WI 53233 USA
关键词
Leech; Lamprey; Neuronal circuit; CPG; Sensory feedback; Locomotion; Swimming; LAMPREY SPINAL-CORD; MESENCEPHALIC LOCOMOTOR REGION; CENTRAL PATTERN GENERATOR; CENTRAL NERVOUS-SYSTEM; LEECH SUBESOPHAGEAL GANGLION; MEMBRANE-POTENTIAL OSCILLATIONS; DEPENDENT POTASSIUM CHANNELS; VENTRAL STRETCH RECEPTORS; MOVEMENT-RELATED FEEDBACK; INHIBITORY AMINO-ACIDS;
D O I
10.1016/j.pneurobio.2010.11.001
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Swimming movements in the leech and lamprey are highly analogous, and lack homology. Thus, similarities in mechanisms must arise from convergent evolution rather than from common ancestry. Despite over 40 years of parallel investigations into this annelid and primitive vertebrate, a close comparison of the approaches and results of this research is lacking. The present review evaluates the neural mechanisms underlying swimming in these two animals and describes the many similarities that provide intriguing examples of convergent evolution. Specifically, we discuss swim initiation, maintenance and termination, isolated nervous system preparations, neural-circuitry, central oscillators, intersegmental coupling, phase lags, cycle periods and sensory feedback. Comparative studies between species highlight mechanisms that optimize behavior and allow us a broader understanding of nervous system function. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:244 / 269
页数:26
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