Phantom limb imaginary fingertapping causes primary motor cortex activation: An fMRI study
Phantom limb imaginary fingertapping causes primary motor cortex activation: An fMRI study
复制标题
DOI：
10.1097/00001756-199612200-00042
复制
发表时间：
1996-12-20
期刊：
影响因子：
1.7
通讯作者：
Hugdahl, K
中科院分区：
文献类型：
--
作者：
Ersland, L;Rosen, G;Hugdahl, K
用常规的1.0 T MR扫描仪检测了一名右臂截肢者在真实的（左手）和想象的（右手）手指敲击过程中运动皮层血氧水平依赖敏感采集的信号强度变化。受试者交替地被指示移动完整的左手手指和想象在截肢的右手上敲击他的“手指”。使用互相关技术检测激活区域，将高度相关的体素叠加到相应的高分辨率解剖3D图像上。在用完整的左手进行手指敲击时，在右侧运动皮层中观察到激活，而在截肢的右手手指的想象运动时，在左侧运动皮层中观察到相应的激活。
A conventional 1.0 T MR-scanner was used to detect signal intensity changes in blood oxygenation level dependent-sensitive acquisitions of motor cortex during real (left hand) and imaginary (right hand) fingertapping in a man who had his right arm amputated. The subject was instructed alternately to move the intact left hand fingers and to imagine tapping his 'fingers' on the amputated right hand. Activated areas were detected using a cross-correlation technique with superimposition of highly correlated voxels on to a corresponding high resolution, anatomical 3D image. Activation was observed in the right motor cortex during fingertapping with the intact left hand, and a corresponding activation in the left motor cortex for imaginary movements of the amputated right hand fingers.