| Title | Integrating Information Across Saccadic Eye Movements
| | Authors | Irwin D.E.
| | Journal | CURRENT DIRECTIONS IN PSYCHOLOCICAL SCIENCE, VOLUME 5, NUMBER 3, JUNE 1996
| | Year of publishing | 1996
| | Abstract | We make rapid eye movements called saccades about three times each second in order to examine the world around us. The still periods between saccades are called fixations. The average fixation is approximately 300 ms in duration, whereas the average saccade is only 30 ms in duration. We make saccades in order to direct the fovea of the eye, which provides our clearest vision, at objects of interest in the environment. Saccadic eye movements create problems for perception because visual information sweeps across the back of the eyes during each saccade; as a consequence, objects in the world have different positions on the retina from one fixation to the next. Even though the visual input is continually changing in this way, we ordinarily perceive the world as a coherent whole, with objects maintaining their positions in space. There is no feeling of "starting anew" with each fixation; rather, we remember the positions and the identities of at least some of the objects in a scene, even if we close our eyes.
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