Implicit processing of somatosensory stimuli disclosed by a perceptual after-effect

Neuroreport
A Maravita

Abstract

A right-brain damaged patient (GR) showing tactile extinction, neglect and no hypesthesia, was asked to compare, in 30 trials, the size of two spheres of different size simultaneously put into each hand. Accuracy was poor because GR was unable to feel the sphere in his left hand and could only report the size of the right sphere. GR was then asked to compare two spheres of identical sizes although again unable to perceive the left sphere he was deceived by a perceptual after-effect also observed in normal subjects, and reported incorrectly the size of the right sphere. The left sphere although unperceived, influenced the perception of the right hand, thus giving the first evidence for an implicit processing of extinguished somatosensory information.

References

Dec 22, 1988·Nature·J C Marshall, P W Halligan
Oct 1, 1974·Journal of Experimental Psychology·J T Walker, K S Shea
Jun 1, 1994·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·A BertiC Umiltà
Dec 1, 1993·Neuropsychologia·E LàdavasR Cubelli
Dec 1, 1962·Brain : a Journal of Neurology·E DE RENZI, L A VIGNOLO
Oct 1, 1992·Journal of Cognitive Neuroscience·A Berti, G Rizzolatti

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Citations

Mar 20, 2002·Current Neurology and Neuroscience Reports·A Kirk
Feb 13, 2001·Cognition·J Driver, P Vuilleumier
Feb 3, 2000·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·M Neppi-Modona
Oct 21, 2000·Progress in Neurobiology·G Kerkhoff
Mar 4, 2014·PloS One·Astrid M L Kappers, Wouter M Bergmann Tiest
Apr 3, 2012·Neuropsychologia·Stéphane JacobsAlessandro Farnè
Apr 13, 2011·Human Brain Mapping·Agnès JobChantal Delon-Martin
Apr 3, 2007·Consciousness and Cognition·Alberto Gallace, Charles Spence
Apr 5, 2011·Consciousness and Cognition·David PritchettCharles Spence
Aug 1, 2020·PloS One·Catharina GlowaniaLoes C J Van Dam
Aug 28, 2020·I-Perception·Olga DaneykoDaniele Zavagno
Feb 27, 2021·Psychological Science·Tony Ro, Lua Koenig

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