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(A) Photopic full-field flash ERGs obtained with (left) brief red flashes on a blue background, (middle) white flashes on a white background, and (right) blue flashes on a yellow background for the range of stimulus strengths used in this study from a control monkey eye. (B) Photopic full-field flash ERGs obtained, left to right: with red on white, green on blue, and blue on white for four stimulus strengths from the same control eye as shown in (A).
