RT Journal Article
SR Electronic
T1 Detection threshold for percutaneous electrical stimuli: asymmetry with respect to handedness.
JF Journal of Neurology, Neurosurgery & Psychiatry
JO J Neurol Neurosurg Psychiatry
FD BMJ Publishing Group Ltd
SP 870
OP 876
DO 10.1136/jnnp.50.7.870
VO 50
IS 7
A1 W G Friedli
A1 P Fuhr
A1 W Wiget
YR 1987
UL http://jnnp.bmj.com/content/50/7/870.abstract
AB Sensory strength-duration curves were obtained using percutaneous true square-wave pulses ranging from 0.1 to 20.0 ms produced by an isolated constant current stimulator. In 119 healthy volunteers sensory thresholds were measured bilaterally by stimulating the distal phalange of the little finger. In order to examine the relationship of sensory threshold and handedness the latter was assessed by means of the Edinburgh Inventory. An asymmetry of sensory threshold was found for all the subjects and this was more pronounced with shorter stimuli. Of right-handers tested 73.5% had a lower threshold on the left side while 70.8% of left-handers had a lower threshold on the right side. Although threshold asymmetry is associated with handedness this is not necessarily due to cerebral lateralization.