Transsaccadic prediction of object identity: Evidence from visual search and object recognition A Herwig1, W Schneider2 |
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1Department of Psychology, Bielefeld University, Germany |
| This study investigates whether peripheral and foveal representations of an object become associated across saccades and how such associations are used for visual search and object recognition. In an acquisition phase participants made saccades to peripheral objects. For one object, features did not change across saccade, so that one and the same object was presented to the peripheral and central retina (normal exposure). For another object, we consistently changed a feature in mid-saccade, so that slightly different objects were presented to the peripheral and central retina (swapped exposure). Transsaccadic learning was assessed in two different test phases. In Experiment 1, participants made eye movements to peripheral objects and were asked to choose a foveal test object matching the peripheral object (object recognition). In Experiment 2, we briefly presented a target object in the fovea and asked participants to search this object in the periphery (visual search). Both experiments revealed better performance for acquisition congruent combinations of peripheral and foveal objects as compared to acquisition incongruent combinations. This suggests that transsaccadic associations are utilized to predict how peripheral objects might appear in the fovea (relevant to object recognition) and how searched-for objects might appear in the periphery (relevant to visual search). |
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