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Turning behaviour in lamprey in response to descending unilateral commands: experiments and modelling
RISE - Research Institutes of Sweden, ICT, SICS.
2001 (English)In: Neurocomputing, ISSN 0925-2312, E-ISSN 1872-8286, Vol. 38-40, p. 1373-1378Article in journal (Refereed) Published
Abstract [en]

Steering manoeuvres in vertebrates are characterised by asymmetric modulation of the cycle duration and the intensity of the symmetric rhythmic locomotor activity. In the lamprey in vitro model system, turns can be evoked by electrical skin stimuli applied to one side of the head, which give rise to descending unilateral excitatory commands. Turns are observed as increased activity on one side of the spinal cord, followed by a rebound on the other. We investigated the generation of turns in single-segment models of the lamprey locomotor spinal network, and were able to reproduce all main experimental results. Sufficient mechanisms to explain changes in the locomotor rhythm, including rebound, are asymmetric activation of crossing inhibitory neurons, accompanied by a calcium influx in these neurons.

Place, publisher, year, edition, pages
2001, 1. Vol. 38-40, p. 1373-1378
National Category
Computer and Information Sciences
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URN: urn:nbn:se:ri:diva-22582DOI: 10.1016/S0925-2312(01)00498-2OAI: oai:DiVA.org:ri-22582DiVA, id: diva2:1042147
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2018-01-14Bibliographically approved

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