Linked Life Data

1255522

Source:http://linkedlifedata.com/resource/pubmed/id/1255522

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1976-5-25
pubmed:abstractText
The caudal extent of the terminal arborizations of dorsal root afferents was determined in adult cats. The method used micro-electrode stimulation within the dorsal horn and the recording on a distant dorsal root filament of the antidromic action potentials evoked by the stimulation of axons within the spinal cord. 2. It was found that all filaments examined in the L2, 3 and 4 dorsal roots contained axons which projected at least as far as the S1 segment. The axons descended in or near the dorsal columns and from there penetrated into the grey matter. 3. The course of single fibres was followed to their apparent terminals. Thresholds, latencies and relative and absolute refractory periods were measured for single axons. These measurements confirmed that continuous axons ran from dorsal roots to distant segments and that the action potentials recorded were not dorsal root reflexes. 4. The majority of fibres with long range central arborizations were shown to have normal receptive fields in the dermatome of their parent dorsal root. They were not aberrant fibres leaving the spinal cord. 5. The long range afferents exist in substantial numbers since fifteen of eighty axons isolated by micro-electrode recording in the L2 dorsal root sent their axons as far as the S1 segment. The presence of these afferents from five segments away does not fit the data published on the inhibitory and excitatory receptive fields or dorsal horn cells which appear adequately explained by afferents arriving over nearby dorsal roots up to two segments away.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0022-3751
pubmed:author
pubmed:issnType
Print
pubmed:volume
255
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
321-34
pubmed:dateRevised
2010-9-7
pubmed:meshHeading
pubmed:year
1976
pubmed:articleTitle
The physiology and anatomy of long ranging afferent fibres within the spinal cord.
pubmed:publicationType
Journal Article