The structure and function of a slowly adapting touch corpuscle in hairy skin
- 1 February 1969
- journal article
- Published by Wiley in The Journal of Physiology
- Vol. 200 (3), 763-796
- https://doi.org/10.1113/jphysiol.1969.sp008721
Abstract
1. Slowly adapting cutaneous mechanoreceptors, in the cat and primates, have been studied by histological and neurophysiological methods.2. Each touch corpuscle is a dome-shaped elevation of the epidermis, whose deepest layer contains up to fifty specialized tactile cells.3. Nerve plates, enclosed by the tactile cell (Merkel cells), are connected to a single myelinated axon in the dense collagenous core of the corpuscle.4. The corpuscle generated > 1000 impulses/sec when excited by vertical surface pressure. The response was highly localized and showed a low mechanical threshold, the frequency being dependent upon the velocity and amplitude of the displacement. There was a period of rapid adaptation before a sustained response which might continue for > 30 min.5. A quantitative analysis of the responses to excitation by displacements of differing amplitude, velocity and duration is included.6. The discharge of touch corpuscle units evoked by a mechanical stimulus was temperature-sensitive, and was enhanced by a fall in skin temperature.Keywords
This publication has 39 references indexed in Scilit:
- Effects of pharmacological agents on the physiological responses of hair discsExperimental Neurology, 1967
- Functional organization of hairy skin in response to sensory stimuliExperimental Neurology, 1965
- PINKUS'S HAARSCHEIBE AND TACTILE RECEPTORS IN CATS.1964
- The effect of histamine, 5‐hydroxytryptamine and acetylcholine on cutaneous afferent fibresThe Journal of Physiology, 1961
- An analysis of fibre diameter and receptor characteristics of myelinated cutaneous afferent fibres in catThe Journal of Physiology, 1960
- Afferente Impulse aus der Extremitätenhaut der Katze bei thermischer und mechanischer ReizungPflügers Archiv - European Journal of Physiology, 1959
- The site of impulse initiation in a nerve cell of a crustacean stretch receptorThe Journal of Physiology, 1958
- Atypical Guard-Hair Follicles in the Skin of the RabbitNature, 1958
- Spontaneous fluctuations of excitability in the muscle spindle of the frogThe Journal of Physiology, 1953
- The impulses produced by sensory nerve‐endingsThe Journal of Physiology, 1926