Fig. 4.

Effect on DS of time delay and modified temporal kernel structure. (A) (Left) A kernel of type $\left(1.6,0.7\right)$ (solid) and one of type $\left(\mathrm{1,1}\right)$ (dashed). Center and Right show the phase lags of the $\left(1.6,0.7\right)$ kernel (solid) relative to one of type $\left(\mathrm{1,1}\right)$ (dashed) at TF = 2 and 10 Hz. (B) The setup is like that of Fig. 1; $d=0.1°$ and SF = 2.5 c/d. The ON kernel is of type $\left(1.6,0.7\right)$ in addition to having a 10-ms delay with respect to OFF. (Center and Right) The ON responses (white) and OFF responses (black) have greater phase differences for Left than for Right. Summed waveforms (red) in Right ($\to$) and Left ($\leftarrow$) directions for TF = 2 Hz and TF = 10 Hz reveal Right preference at both TFs. (C) Right vs. Left responses as functions of TF, at SF = 2.5 c/d. It is the analog of Fig. 1D but with a $\left(1.6,0.7\right)$ ON kernel in addition to the 10-ms delay.