Reflex responses of vagal efferent fibres influenced by gastrointestinal mechanoreceptors to electrical afferent stimulation in the anaesthetized ferret.
Activity was recorded from 188 vagal efferent fibres, 90% of which showed responses to distension of the stomach and duodenum. Of thirty fibres tested with single-shock vagal stimulation, reflex action potentials were evoked in fifteen, ranging in latency from 39 to 318 ms. Responses at short latency showed little latency-jitter and high response-probability, and those at long latency showed opposite characteristics. This suggests that two pathways are present in the central organization of vagal reflexes to the gut.
Blackshaw
L A
LA
Department of Biomedical Science, University of Sheffield, Western Bank.
Grundy
D
D
D000200:Action Potentials; D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D004064:Digestive System / Q000294:innervation*; D004525:Efferent Pathways / Q000502:physiology; D004558:Electric Stimulation; D005289:Ferrets; D008465:Mechanoreceptors / Q000502:physiology*; D012018:Reflex / Q000502:physiology*; D014630:Vagus Nerve / Q000502:physiology*