Sensory maps in the human brain
Sensory maps in the human brain
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人脑中的感觉图
作者：
Tony T. Yang;C. Gallen;B. Schwartz;Floyd E. Bloom;Vilayanur S. Ramachandran;S. Cobb
使用高分辨率、无创脑磁图和无痛触觉刺激来研究 2 名上肢传入神经阻滞患者可能的体感重组。 8 年前，S1 的左臂丛神经遭受创伤性撕脱。在研究之前 11 年前，S2 的右前臂在肘部以下 8 厘米处意外截肢。心理物理测试显示了两个 S 中的 2 张参考感觉图，一张在脸上，另一张在上臂，反映了彭菲尔德小人的手部区域位于脸部和手臂两侧的事实。结果证明了成人大脑中感觉图大规模重组的能力，对脑损伤的恢复和幻肢痛的治疗具有治疗意义。（PsycINFO 数据库记录 (c) 2016 APA，保留所有权利）
Used high-resolution, noninvasive magnetoencephalography and painless tactile stimuli to investigate possible somatosensory reorganization in 2 men with upper limb deafferentiation. S1 had experienced traumatic avulsion of his left brachial plexus 8 yrs earlier. S2 suffered accidental amputation of his right forearm 8 cm below the elbow 11 yrs before the study. Psychophysical testing revealed 2 maps of referred sensations in both Ss, one on the face and the other on the upper arm, reflecting the fact that the hand area in the Penfield homunculus is flanked by the face and arm. Results demonstrate the capacity for massive reorganization of sensory maps in the adult human brain, with therapeutic implications for recovery from brain injury and for treatment of phantom limb pain.(PsycINFO Database Record (c) 2016 APA, all rights reserved)