Enhanced tactile spatial acuity and cortical processing during acute hand deafferentation

Acute deafferentation of a limb results in bilateral cortical reorganization, but the behavioral consequences of this phenomenon are unknown. Here we found rapid improvements in tactile spatial acuity and changes in cortical processing for the left hand during cutaneous anesthesia of the right hand....

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Veröffentlicht in:	Nature neuroscience 2002-10, Vol.5 (10), p.936-938
Hauptverfasser:	Van Boven, Robert W, Cohen, Leonardo G, Werhahn, Konrad J, Mortensen, Jennifer, Zeuner, Kirsten E
Format:	Artikel
Sprache:	eng
Schlagworte:	Action Potentials - physiology Adolescent Adult Afferent Pathways - physiology Anesthesia Anesthesia, Local - methods Animal Genetics and Genomics Behavioral Sciences Biological Techniques Biomedical and Life Sciences Biomedicine brief-communication Evoked potentials (Electrophysiology) Evoked Potentials, Somatosensory - physiology Female Foot - innervation Foot - physiology Hand - innervation Hand - physiology Humans Male Measurement Middle Aged Nerve Block Neurobiology Neurons Neurosciences Physiological aspects Sensory Thresholds - physiology Touch - physiology Visual cortex
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Zusammenfassung:	Acute deafferentation of a limb results in bilateral cortical reorganization, but the behavioral consequences of this phenomenon are unknown. Here we found rapid improvements in tactile spatial acuity and changes in cortical processing for the left hand during cutaneous anesthesia of the right hand. The site-specific improvement in tactile spatial acuity may represent a behavioral compensatory gain.
ISSN:	1097-6256 1546-1726
DOI:	10.1038/nn917