Simulations of Intersegmental Coordination during Swimming in the Lamprey using a Continuous Network Model
Swimming in the lamprey involves the coordination of alternating burst activity in the left and right sides of each spinal segment, with a frequency from.25 to 8-10 Hz. R.ostrocauda.l time delays between burst onset in each segment produce a laterally directed traveling wave which propels the animal forwards through the water. A reversed direction of the wave results in backward swimming [1, 2]. The intersegmental phase lag (Fig 1A) is considered independent of swimming speed and is, in the isolated spinal cord, approximately 1%/segment, although values of ±2% can be recorded .
KeywordsSegmental Network Excitatory Drive Intersegmental Coordination Central Pattern Generator Network Forward Swimming
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