Kassel J
Brain Res. 1982 Jan 14;231(2):247-55. doi: 10.1016/0006-8993(82)90363-8.
The somatotopic organization of somatosensory (SI) cortical projections to the deep layers of the superior colliculus (SC) in rats was examined using neurophysiological micromapping methods. Electrical stimulation of SI produced SC unit responses at the same depths as did peripheral tactile stimulation, in SC laminae IV and VI; mapping of corticotectal projections was performed only in lamina IV. Antidromic activation of the pathway revealed that corticotectal cell bodies are located in SI layer V. Corticotectal projections were found to interconnect only those SI and collicular areas which have similar tactile receptive fields.
利用神经生理学微图谱方法，研究了大鼠体感（SI）皮层投射至上丘（SC）深层的躯体定位组织。对SI进行电刺激，在SC的IV层和VI层中，与外周触觉刺激产生SC单位反应的深度相同；仅在IV层进行了皮质顶盖投射图谱绘制。该通路的逆向激活显示，皮质顶盖细胞体位于SI层V。发现皮质顶盖投射仅连接那些具有相似触觉感受野的SI和丘系区域。
