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Complexity Digest 2008.06 - 07.01
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08-Feb-2008

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Scratching Linked to Specific Brain Regions, MedPage Today
 









Excerpts: The long-standing enigma of the itch-scratch cycle is beginning to be
unraveled by functional MRI studies of the brain. Scratching alters brain
activity in distinctive ways, increasing activity in several areas while
decreasing it in others, reported Gil Yosipovitch, M.D., and colleagues at Wake
Forest University online in the Journal of Investigative Dermatology.   "We know
scratching is pleasurable, but we haven't known why," Dr. Yosipovitch added.  
The group studied 13 healthy volunteers who were scratched on the leg with a
brush. Scratching lasted 30 seconds followed by no scratching for 30 seconds,
for five minutes total.
Source: Scratching Linked to Specific Brain Regions[
http://www.medpagetoday.com/Dermatology/GeneralDermatology/tb/8178 ], John
Gever, Staff Writer, MedPage Today, 08/01/31

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