Retinotopic mapping of Regions-Of-Interest (ROIs).

<p>In order to define the borders of V1–V3, participants viewed a rotating green and red flickering wedge stimulus. Additionally, a task was used that stimulated the locations of the possible memory stimuli. This was accomplished by presenting a flickering (red/green) rectangle at these locations. This task was used to define the ROIs within V1–V3 for all possible memory locations. The two tasks combined resulted in four ROIs per region of the visual cortex. Event-related time-courses at these ROIs were extracted for the different conditions of the experiment.