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Effects of picrotoxin on the b- and d-wave V-log I function in dark and light adapted frog eyes. The amplitudes of the b- and d-waves are normalized to V max of the responses obtained in the control experiments (R). (a) Changes of the b/d amplitude ratio under the influence of picrotoxin are also shown. (b) Changes of the b- and d-wave implicit time under the influence of picrotoxin in light adapted eyes. Mean values ± SEM are shown.
