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rdf:type |
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lifeskim:mentions |
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pubmed:dateCreated |
2000-4-12
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pubmed:abstractText |
1. In anaesthetised rats, activity recorded from sympathetic postganglionic neurones innervating the tail circulation has characteristic rhythmicity (0.4-1.2 Hz). At the population level this rhythmicity can be seen as a peak (T-peak) in autospectra of sympathetic activity recorded from ventral collector nerves (VCNs). 2. Here we investigated whether nerves supplying thermoregulatory circulations share common rhythmic discharges at T-peak frequency. Activity was recorded from nerve pairs consisting of left ventral collector nerve (LVCN) and one of the following: right ventral collector nerve (RVCN), left dorsal collector nerve (DCN), left saphenous nerve (SN) or left renal nerve (RN). 3. During central apnoea, T-peak frequencies in RVCN autospectra were similar to those of simultaneously recorded LVCN and these activities were coherent. Similar observations were made for nerve pairs involving LVCN-DCN and LVCN-SN. In contrast, autospectra of RN activity did not contain T-peaks. 4. In comparison to the peaks in autospectra of RN activity, when the frequency of rhythmic phrenic nerve activity was manipulated T-peaks in VCN, DCN and SN autospectra did not show obligatory 1:1 locking. 5. We conclude that T-peaks are a robust feature of autospectra of sympathetic discharges supplying thermoregulatory circulation but not those influencing the kidney. The high coherence demonstrated between the T-peak discharges is consistent with the view that common/coupled oscillators located within the CNS influence cutaneous vasoconstrictor sympathetic activity.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-10191331,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-10322044,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-10457088,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-2058743,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-2118732,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-2265354,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-2425087,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-2538087,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-2682781,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-2923261,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-2986532,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-3225349,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-3614646,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-3661756,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-3676749,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-3898312,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-5015185,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-7463376,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-7611524,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-7775333,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-7884455,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-8027521,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-8057253,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-8366197,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-8498604,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-8887759,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-8951726,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-9547393,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-9554992,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-9756521,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-9804944,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10699088-9843889
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0022-3751
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:day |
1
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pubmed:volume |
523 Pt 2
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
449-57
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:10699088-Animals,
pubmed-meshheading:10699088-Apnea,
pubmed-meshheading:10699088-Blood Gas Analysis,
pubmed-meshheading:10699088-Body Temperature Regulation,
pubmed-meshheading:10699088-Linear Models,
pubmed-meshheading:10699088-Male,
pubmed-meshheading:10699088-Membrane Potentials,
pubmed-meshheading:10699088-Neurons,
pubmed-meshheading:10699088-Periodicity,
pubmed-meshheading:10699088-Phrenic Nerve,
pubmed-meshheading:10699088-Rats,
pubmed-meshheading:10699088-Rats, Sprague-Dawley,
pubmed-meshheading:10699088-Sympathetic Fibers, Postganglionic,
pubmed-meshheading:10699088-Tail
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pubmed:year |
2000
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pubmed:articleTitle |
Coherent rhythmic discharges in sympathetic nerves supplying thermoregulatory circulations in the rat.
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pubmed:affiliation |
Autonomic Neuroscience Institute, Department of Physiology, Royal Free and University College Medical School, University College London, London NW3 2PF, UK.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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