Linked Life Data

1761987

Source:http://linkedlifedata.com/resource/pubmed/id/1761987

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1992-2-13
pubmed:abstractText
1. We have examined the locations and functional properties of a large number of motoneurons in the pedal ganglia of Aplysia brasiliana. These neurons control movement of the parapodia and body during swimming. We have grouped the motoneurons into classes based on several criteria, including the topology of the cells and their axons, the properties of their peripheral motor fields, and their phasic activity during an induced swim motor program. 2. A total of 410 motoneurons were analyzed. There are at least 16 distinguishable motor fields in the parapodia, based on the region affected, direction of contraction, and phase of neuronal activity during fictive swimming. 3. Motoneurons for each motor field tend to appear in the same region of the ganglion in different preparations. 4. Most motoneurons have only ipsilateral effects. About 1% cause contralateral contraction, and they project directly to the contralateral parapodium. 5. Three types of motoneuron are described that cause parapodial expansion. 6. Two other groups of motoneurons were found that innervate either the columellar muscle or longitudinal foot muscles. 7. Almost all motoneurons fired rhythmically during fictive swimming, including those controlling foot and columellar muscle.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0022-3077
pubmed:author
pubmed:issnType
Print
pubmed:volume
66
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1352-65
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Neural control of swimming in Aplysia brasiliana. II. Organization of pedal motoneurons and parapodial motor fields.
pubmed:affiliation
Marine Biomedical Institute, University of Texas Medical Branch, Galveston 77550.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.