Skottun Bernt C, Skoyles John R
Skottun Research, P.O. Box 592, Ramah, NM 87321, USA.
Brain Cogn. 2006 Jul;61(2):172-80. doi: 10.1016/j.bandc.2005.12.004. Epub 2006 Feb 7.
The suggestion that coherent motion may serve as a test of magnocellular sensitivity is problematic. However, the nature of the problems depends on how the "magnocellular system" is defined. If this term is limited to subcortical entities, the problems are that subcortical neurons are not directionally selective, and that their receptive fields are too small to account for the spatial summation of coherent motion. If "magnocellular system" is defined to include cortical entities, such as area MT, one is faced with the fact that this definition itself is problematic as well as the problem that area MT is known to receive parvocellular and koniocellular inputs.
认为连贯运动可作为大细胞敏感性测试的这一观点存在问题。然而，问题的本质取决于“大细胞系统”是如何定义的。如果该术语仅限于皮层下实体，那么问题在于皮层下神经元没有方向选择性，且它们的感受野太小，无法解释连贯运动的空间总和。如果“大细胞系统”被定义为包括皮层实体，如MT区，那么人们面临的事实是，这个定义本身就有问题，同时还存在MT区已知接受小细胞和侏儒细胞输入的问题。
