Ermentrout G B, Cowan J D
Biol Cybern. 1979 Oct;34(3):137-50. doi: 10.1007/BF00336965.
Neuronal activity in a two-dimensional net is analyzed in the neighborhood of an instability. Bifurcation theory and group theory are used to demonstrate the existence of a variety of doubly-periodic patterns, hexagons, rolls, etc., as solutions to the field equations for the net activity. It is suggested that these simple geometric patterns are the cortical concomitants of the "form constants" seen during visual hallucinosis.
在二维网络中，对不稳定性邻域内的神经元活动进行了分析。运用分岔理论和群论来证明，作为网络活动场方程的解，存在各种双周期模式、六边形、卷状等。有人提出，这些简单的几何模式是视觉幻觉期间所见“形状常数”的皮质伴随物。
