DIRECTIONALLY SELECTIVE COMPLEX CELLS AND THE COMPUTATION OF MOTION ENERGY IN CAT VISUAL-CORTEX
DIRECTIONALLY SELECTIVE COMPLEX CELLS AND THE COMPUTATION OF MOTION ENERGY IN CAT VISUAL-CORTEX
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DOI：
10.1016/0042-6989(92)90130-b
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发表时间：
1992-02-01
期刊：
影响因子：
1.8
通讯作者：
ADELSON, EH
中科院分区：
文献类型：
--
作者：
EMERSON, RC;BERGEN, JR;ADELSON, EH
我们对猫纹状皮层中的定向选择性 (DS) 复杂细胞应用了一组 1 和 2 条测试，并将响应与两个计算模型预测的响应进行了比较。单条反应和两条交互产生具有高度诊断性的独特模式。观察到的响应与基本（非对手）运动能量模型预测的响应非常相似 [Adelson & Bergen (1985) Journal of the Optical Society of America A, 2, 284-299]。然而，它们与能量模型的对手组合不一致，也与经典 Reichardt 模型的任何阶段不一致。特别是，Reichardt 模型（以及能量模型的对手组合）预测了 2 杆相互作用中可分离的时空对称性，而这在我们的测量中未观察到，而非对手能量模型预测了与测量的皮层反应非常相似的不可分离的定向相互作用。模型和测量之间的比较表明了空间感受野组织和非线性变换的可能机制。
We applied a set of 1- and 2-bar tests to directionally selective (DS) complex cells in the cat's striate cortex, and compared the responses with those predicted by two computational models. Single-bar responses and 2-bar interactions produce distinctive patterns that are highly diagnostic. The observed responses are quite similar to those predicted by a basic (non-opponent) motion-energy model [Adelson & Bergen (1985) Journal of the Optical Society of America A, 2, 284-299]. However, they are not consistent with an opponent combination of energy models, nor are they consistent with any stage of the classic Reichardt model. In particular, the Reichardt model (as well as opponent combinations of energy models)predicts a separable space-time symmetry in the 2-bar interaction that is not observed in our measurements, while the non-opponent energy model predicts an inseparable, oriented interaction very similar to the measured cortical responses. Comparisons between model and measurements suggest possible mechanisms of spatial receptive-field organization and of nonlinear transformations.