Linked Life Data

2924827

Source:http://linkedlifedata.com/resource/pubmed/id/2924827

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-4-24
pubmed:abstractText
Ninety thalamocortical (TC) neurons were recorded extracellularly in ventrobasal thalamus of halothane-anesthetized cats. Projections of all of these neurons to specific subdivisions of somatosensory cortex were identified by their antidromic invasion following intracortical microstimulation restricted to these subdivisions. Collision-extinction tests were used to document excitatory inputs to TC neurons from afferent fibers of forelimb nerves stimulated electrically. Thirty-nine TC neurons (43% of sample) were excited from at least one forelimb nerve. Fifteen TC neurons were activated from two or more forelimb nerves. Combinations of effective nerves included ones innervating topographically different regions of forelimb. Neurons projecting to area 1-2 were least likely to be activated from more than one nerve. Seven TC neurons activated by electrical stimulation of nerve trunks were tested also with two distinct forms of mechanical somatic stimuli, i.e., hair bending and vibration, and with intradermal electrical stimuli. These tests revealed convergent inputs from hairy and glabrous skin. We conclude that there is a population of neurons, located in ventrobasal thalamus, which is capable of conveying multiple inputs to each of the subdivisions of primary somatosensory cortex. These neurons could be involved in forming properties of feature-extracting neurons of somatosensory cortex.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0014-4819
pubmed:author
pubmed:issnType
Print
pubmed:volume
74
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
105-15
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Multiple inputs to a population of thalamocortical neurons projecting to cat somatosensory cortex.
pubmed:affiliation
Department of Physiology, Queen's University, Kingston, Ontario, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't