Maex R, Orban G A
Laboratorium voor Neuro- en Psychofysiologie, K.U. Leuven Medical School, Belgium.
Proc Natl Acad Sci U S A. 1991 May 1;88(9):3549-53. doi: 10.1073/pnas.88.9.3549.
We have modeled simple-cell direction selectivity by a nonlinearity consisting of a subtraction inhibition followed by half-wave rectification and compared the performance of this model to that of different versions of the elaborated Reichardt detector for similar inputs and parameter settings. Not only does the subtraction model fit the experimental data more closely than the elaborated Reichardt detector, but the subtraction model also is more plausible from a physiological and anatomical point of view. Moreover, the subtraction model operates optimally at plausible spatiotemporal parameter settings. Therefore, we conclude that there is no need to invoke specific synaptic interactions, such as implied in the Reichardt detector, to account for simple-cell direction selectivity.
我们通过一个由减法抑制后接半波整流组成的非线性来模拟简单细胞方向选择性，并在相似输入和参数设置下，将该模型的性能与不同版本的精细莱卡特检测器的性能进行了比较。减法模型不仅比精细莱卡特检测器更紧密地拟合实验数据，而且从生理和解剖学角度来看也更合理。此外，减法模型在合理的时空参数设置下能最佳运行。因此，我们得出结论，无需援引特定的突触相互作用（如莱卡特检测器所暗示的）来解释简单细胞方向选择性。
