The afferent neural response to electrotactile stimuli: preliminary results.
We recorded action potentials from three RA fibers innervating primate fingerpad, while applying electrotactile (electrocutaneous) stimulation. Negative pulses required 1.3-1.5 times more current than positive ones for entrainment. The strength-duration time constant was approximately 151 micros. Suprathreshold sinusoidal vibration synchronized to 30-Hz electrotactile pulses changed the electrotactile entrainment current slightly, indicating a possible electrical-mechanical transduction interaction.
Kaczmarek
K A
KA
Department of Rehabilitation Medicine, University of Wisconsin-Madison 53706, USA. k.a.kaczmarek@ieee.org
Tyler
M E
ME
Brisben
A J
AJ
Johnson
K O
KO
D000200:Action Potentials / Q000502:physiology; D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D003143:Communication Devices for People with Disabilities; D004558:Electric Stimulation; D004566:Electrodes; D005385:Fingers / Q000294:innervation*; D008253:Macaca mulatta; D008465:Mechanoreceptors / Q000502:physiology; D012682:Sensory Aids; D014110:Touch / Q000502:physiology*