| Abstract: | Observers viewed a rightward moving dot (CRO Trace) during rightward and diagonal eye movements. It was found that: (1) with horizontal saccades, when the trace moved at the same velocity as the eyes it appeared as a stationary dot located at the left edge of the trace's path (indicating the absence of an extraretinal movement signal); and (2) whether the perceived target was aligned with the left or right edge of the trace's path (rightward eye movement condition) and whether it appeared to move upward or downward from the actual trace path (diagonal eye movement condition) depended upon whether the velocity of the trace was greater than or less than that of the eyes. Results were discussed in terms of ex-afference and re-afference and the interpretation that one makes of such stimuli. |
