Induced and evoked neural correlates of orientation selectivity in human visual cortex

►Larger response for oblique over cardinal orientations in medial visual cortex, ►present for both induced gamma power and earliest evoked response, ►opposite pattern for later evoked response in extrastriate area, ►initial oblique preference may be due to different tuning widths of V1 cells, ►later preference for cardinals may imply feedback in visual cortex.