Objective To test the capability of functional magnetic resonance imaging ( fMRI) in mapping the somatotopic organization in the primary motor cortex. 目的检验功能性磁共振绘制大脑初级运动皮层躯体分布的能力和激活区特点。
The neurons, projecting to the cervical, thoracic and lumbar segments, were distributed diffusely in E& W nucleus without evident somatotopic organization. AM核及固有E&W核的细胞向脊髓颈、胸及腰段有广泛的投射,各段投射细胞在核内分布弥散,无明显定位。