Skin type and nerve effects on cortical tactile processing: a somatosensory evoked potentials study
Marco Guidotti, Clément Beaurieux, Pierre Marionnaud, Frédérique Bonnet‐Brilhault, Claire Wardak, Marianne Latinus
Abstract
The current paper highlights the influences of stimulated skin type (glabrous/hairy) and nerve (median/radial) on cortical somatosensory evoked potentials. Mechanical stimulations were applied over four territories of the right hand in 18 adults. Four middle-latency components were identified: P50, N80, N130, and P200. A larger N80 was found after glabrous skin stimulations than after hairy skin ones, regardless of the nerve being stimulated. P50 and N80 were larger after median than radial nerve stimulations.
Topics & Concepts
Somatosensory systemRadial nerveMedian nerveSomatosensory evoked potentialNeuroscienceTactile stimuliLatency (audio)ElectrophysiologyAnatomyPsychologySensory systemMedicineComputer scienceTelecommunicationsTactile and Sensory InteractionsMotor Control and AdaptationEEG and Brain-Computer Interfaces