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Effect of opposite-feature inhibition on decision behavior in a four-choice task. A, Mean reaction time versus motion coherence on correct (filled symbols) and error (open symbols) trials. B, Percentage of correct trials as a function of motion coherence. A total of 1000 trials are counted for each case. The performance decreases with increasing Jopp at low and intermediate coherence levels, whereas the reaction time drops with increasing Jopp. Jsim is fixed at 1.1.
