Then in the second part of the experiment a face and

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Unformatted text preview: nt timing. In each experimental session, the eural stimulus selectivity of several neighbouring cortical sites was first termined in a fixation task using luminance-matched face and non-face eyscale images. Then, in the second part of the experiment (a), face and on-face images with varying amounts of noise were used in a face tegorization task. b, Timing of events in each categorization trial. One of e four possible microstimulation conditions shown was applied randomly each trial. ehran, 19395, Iran. 2Research Center for Brain and Cognitive Sciences, 385, Iran. Afraz, Kiani, Esteky (2006) as a scat selec func corr onse also sign P¼ It shift prop sign 50–1 r¼ (r ¼ T muc selec reco stim to t phys dim F sizes larg com was mic (Fig of b latio of t (site (2006) selec three elivered at 200 Hz (refs 19, 20). The stimulation pulses were microstimulation time conditions caused a significant shift in iphasic, with the cathodal pulse leading. Each pulse was 0.2 msthe psychometric functions compared to the non-stimulated in condition. uration with 0.1 ms between the cathodal and anodal phase....
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