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. Author manuscript; available in PMC: 2015 Feb 28.
Published in final edited form as: Nature. 2014 Jul 6;512(7515):427–430. doi: 10.1038/nature13427

Figure 4. Modeling Mi1/Tm3 and Tm1/Tm2 as the delayed and non-delayed channels of light edges and dark edges correlators.

Figure 4

A. Left: The average filters and nonlinearities from the receptive field stochastic data set (200 s noise presentation, 50 ms correlation time, Extended data Figure 6) were used to model Mi1 and Tm3 as the delayed and non-delayed channels of a correlator model in bottom left. Right: same as left with Tm1 and Tm2 as the delayed and non-delayed channels of correlator model.

B. Computed normalized temporal frequency tuning curves obtained numerically for the Mi1/Tm3 model correlator (left) and the Tm1/Tm2 model correlator (right) using sine waves of different temporal frequencies.

C. Computed normalized response of the Mi1/Tm3 model correlator (left) and Tm1/Tm2 model correlator (right) to light or dark edges of 100% contrast, moving at a range of speeds.