PMID: 3746397Jul 1, 1986Paper

Response of cat cutaneous mechanoreceptors to punctate and grating stimuli

Journal of Neurophysiology
F J Looft

Abstract

Cat hairy skin type I, type II, and field mechanoreceptor response characteristics were studied by drawing punctate and grating stimuli across a unit's receptive field (RF). Area RF maps were generated with scans covering approximately 1 X 1 cm using different vertical loadings, scan velocities, and scan orientations. The results from stimulating with a 1 g mass, 1 mm diam, rounded-tip punctate probe indicate that type I units display essentially invariant response topographies as a function of stimulus parameters. Type II units, presumably because of their unidirectional stretch sensitivity, showed response differences that were a function of the scan orientation. Field units, although not considered to be important for stimulus feature extraction, also displayed a directionally sensitive response profile. Changing the vertical loading or the scanning velocity of the stimulus had a minimal affect on the resulting RF profiles for any of the units studied. Grating stimuli with periods of 0.25-2.0 mm were scanned over receptors to study their grating discrimination ability. Different scan directions were used to study the directional sensitivity of a unit. Both type I and II units had optimal scan orientations for minimum grating...Continue Reading

Citations

Sep 1, 2014·Nature Neuroscience·J Andrew Pruszynski, Roland S Johansson
Apr 4, 2018·ELife·J Andrew PruszynskiRoland S Johansson
Mar 11, 2003·Journal of Neurophysiology·Johan WessbergAke B Vallbo
Jan 1, 1995·Progress in Biophysics and Molecular Biology·W Hamann

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