Neurology
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Neurology 1999;53:1596
© 1999 American Academy of Neurology
Brief Communications

Crossmodal and sensorimotor integration in tactile awareness

Sandeep Vaishnavi, BS, Jesse Calhoun, BS and Anjan Chatterjee, MD

From the Department of Neurology (S. Vaishnavi, J. Calhoun, and Dr. Chatterjee) and the Cognitive Science Program (S. Vaishnavi and Dr. Chatterjee), University of Alabama at Birmingham, AL.

Address correspondence and reprint requests to Dr. Anjan Chatterjee, Department of Neurology, The University of Pennsylvania, 3 West Gates Building, 3400 Spruce Street, Philadelphia, PA 19104-4283.

We investigated tactile awareness in three patients with tactile extinction of stimuli located on contralesional somatotopic space. Contralesional tactile awareness was enhanced when they gazed to the left and when they moved their limbs. We suggest that personal somatotopic and peripersonal space are integrated by polymodal and sensorimotor links, which allow us to be aware of and act effectively on stimuli in space.

Key words: Extinction—Neglect—Consciousness—Parietal cortex—Stroke.






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