Fig. 8.

Effect of bilateral inactivation of A1 by muscimol-Elvax on psychometric functions in the midsagittal plane. Stimuli were 40-ms noise bursts. Data from individual animals are shown in each panel. Each line shows the fitted psychometric function obtained before implantation of muscimol-Elvax (gray line) and with the implants in place (black line) for a different ferret. Two animals were retested after the muscimol-Elvax implants had been removed (A, B, stippled line). Note that the data in F are from F0318, the animal in which the Elvax had become encapsulated by dura and displaced from the surface of the cortex.