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A Comparative fMRI Study of Cortical Representations for Thermal Painful, Vibrotactile, and Motor Performance Tasks
 

Summary: A Comparative fMRI Study of Cortical Representations for Thermal
Painful, Vibrotactile, and Motor Performance Tasks
Patricia A. Gelnar,* Beth R. Krauss,* Paul R. Sheehe, Nikolaus M. Szeverenyi, and A. Vania Apkarian*
*Department of Neurosurgery, Department of Neuroscience and Physiology, and Department of Radiology, State University of New York
Health Science Center, Syracuse, New York 13210
Received February 23, 1999
Cortical activity due to a thermal painful stimulus
applied to the right hand was studied in the middle
third of the contralateral brain and compared to activa-
tions for vibrotactile and motor tasks using the same
body part, in nine normal subjects. Cortical activity
was demonstrated utilizing multislice echo-planar
functional magnetic resonance imaging (fMRI) and a
surface coil. The cortical activity was analyzed based
upon individual subject activity maps and on group-
averaged activity maps. The results show significant
differences in activations across the three tasks and
the cortical areas studied. The study indicates that
fMRI enables examination of cortical networks subserv-
ing pain perception at an anatomical detail not avail-

  

Source: Apkarian, A. Vania - Department of Physiology, Northwestern University

 

Collections: Biology and Medicine