左利手受试者双手腕部感觉诱发电位幅度之间的比率。
Ratio between the amplitude of sensory evoked potentials at the wrist in both hands of left-handed subjects.
作者信息
Martínez A C, Conde M C, Campo F D, Mingo P, Ferrer M T
出版信息
J Neurol Neurosurg Psychiatry. 1980 Feb;43(2):182-4. doi: 10.1136/jnnp.43.2.182.
Abstract
Maximum sensory conduction velocity, duration and amplitude of the sensory evoked potentials at the wrist on stimulating digits 1, 2, 3 and 5, were determined bilaterally in 21 left-handed subjects with an age range from 6 to 47 years. The amplitude of the sensory evoked potential at the wrist was larger in the right hand. This asymmetry is the reverse of the one previously observed in right-handed infants and adults. It could be physiological and suggests a difference in density of sensory innervation between the two hands. Asymmetry of sensory innervation can be helpful in the study of hand dominance.
摘要
对21名年龄在6至47岁之间的左利手受试者双侧测定了刺激示指、中指、环指和小指时腕部感觉诱发电位的最大感觉传导速度、时限和波幅。腕部感觉诱发电位的波幅右手更大。这种不对称与之前在右利手婴儿和成年人中观察到的情况相反。它可能是生理性的，提示双手感觉神经支配密度存在差异。感觉神经支配的不对称有助于研究利手情况。
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