TY - JOUR
T1 - Bilateral Impairment of Somesthetically Mediated Object Recognition in Humans
AU - CASELLI, RICHARD J.
N1 - Funding Information:
This study was supported in part by a grant from the Mayo Foundation.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1991
Y1 - 1991
N2 - Thirty adult patients (six in each of five groups—neurologically normal, lacunar infarct-related hemiparesis, unilateral thalamic lacunar infarction, right cortical infarction with mild left hemineglect, and extensive right cortical infarction with severe left hemineglect) were asked to perform various tasks that encompassed basic and intermediate somatosensory functions and tactile and visual object recognition. Patients with thalamic and cortical infarctions had severe impairment of contralateral hand-mediated somatosensory functions in all three categories of somesthetic tasks, although patients with cortical infarction were more impaired on the object recognition task than were patients with thalamic infarction. Patients with extensive damage to the right hemisphere and severe left hemineglect also had impairment of somesthetically mediated object recognition in the ipsilateral hand despite normal basic and intermediate somatosensory function and visually mediated object recognition analogous to unilateral tactile agnosia. All other groups had normal ipsilateral tactile object recognition.
AB - Thirty adult patients (six in each of five groups—neurologically normal, lacunar infarct-related hemiparesis, unilateral thalamic lacunar infarction, right cortical infarction with mild left hemineglect, and extensive right cortical infarction with severe left hemineglect) were asked to perform various tasks that encompassed basic and intermediate somatosensory functions and tactile and visual object recognition. Patients with thalamic and cortical infarctions had severe impairment of contralateral hand-mediated somatosensory functions in all three categories of somesthetic tasks, although patients with cortical infarction were more impaired on the object recognition task than were patients with thalamic infarction. Patients with extensive damage to the right hemisphere and severe left hemineglect also had impairment of somesthetically mediated object recognition in the ipsilateral hand despite normal basic and intermediate somatosensory function and visually mediated object recognition analogous to unilateral tactile agnosia. All other groups had normal ipsilateral tactile object recognition.
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U2 - 10.1016/S0025-6196(12)60658-2
DO - 10.1016/S0025-6196(12)60658-2
M3 - Article
C2 - 2013986
AN - SCOPUS:0025735574
SN - 0025-6196
VL - 66
SP - 357
EP - 364
JO - Mayo Clinic proceedings
JF - Mayo Clinic proceedings
IS - 4
ER -