In acute C1 spinal cats, electrical stimulaton of myelinated femoral (L5-L6) or pelvic (S1-S3) nerve afferents or natural stimulation of receptors of pelvic nerve bladder afferents increased or decreased the activity of thoracic (T1-T7) sympathetic preganglionic neurons (SPNs) projecting to the cervical sympathetic trunk. A similar proportion of these SPNs responded to electrical stimulaton of myelinated radial (C7-T1) nerve afferents. The responses of SPNs to electrical or natural activation of pelvic nerve afferents in acute spinal animals were compared with those of SPNs in CNS intact or midcollicular decerebrate animals. Myelinated somatic and visceral afferents can activate propriospinal systems which connect with SPNs many segments away from the entry point of these afferents. The proportion of SPNs actively responding to input transmitted via these pathways seems independent of the entry point of the input. These pathways are likely to be operative in the CNS intact or decerebrate preparation.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.71813 |
| Date | January 1982 |
| Creators | Schondorf, Ronnie. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Physiology.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000168642, proquestno: AAINK64391, Theses scanned by UMI/ProQuest. |
Page generated in 0.0018 seconds