Fig. 3: Red-Green opponent responses in human LGN.
From: Effects of eye closure on the spiking activity of human lateral geniculate neurons
a The checkerboard stimuli used to assess color tuning and ocularity. Red-green, blue-yellow, and high and low-contrast achromatic checkerboards were shown binocularly. b Time course, raster-plots and mean activity of Unit #11 elicited by the checkerboards in a time-window from 0–500 ms (black bar). The units gave opposite responses to the red and green phases of the checkerboard. The colors of the bars and traces represent the color of the check in the RF. Gray bars represent the activity evoked by the white checks of the high-contrast achromatic grating (responses to the low contrast checkerboards are not shown). Dots indicate individual trials (n = 6). Error-bars represent 1 s.e.m. Asterisks indicate significant differences between responses to opposite-phases of each grating (***: t-test, two-sided, Bonferroni correction applied, p < 0.001). c Responses of Unit #10, which also showed red-green opponency. d Responses from unit #6a, which gave opposite responses to the black and white phases of the checkerboard. Source data are provided as a Source Data file.
