Title

Brain-Spinal Feedforward–Feedback Interactions Affect Output Pattern and Intracellular Properties of Motor Networks in the Lamprey

Document Type

Article

Language

eng

Format of Original

11 p.

Publication Date

6-1999

Publisher

Elsevier

Source Publication

Neurocomputing

Source ISSN

0925-2312

Abstract

In many vertebrates locomotor-like activity can be induced from spinal neurons. The effects of supraspinal input on this spinal rhythm are not well understood. Using an in vitro lamprey preparation we find that in the presence of the brain–spinal cord feedforward–feedback loop the ability of the spinal circuits to produce fictive locomotion is altered. Also, the variability in the cycle period and intersegmental delay increased. We have developed novel signal processing techniques utilizing wavelet decomposition and time-varying covariance to analyze the neural activity. We suggest that the brain–spinal cord system should be viewed as a single dynamical system capable of multiple behavioral states.

Comments

Neurocomputing, Vol. 26-27 (June 1999): 749-759. DOI.