Abstract
The aim of this work was to explore the nature of elementary operations (engage, move, disengage, and filtering) of spatial attention in deaf experts in sign language. Good communication skills require deaf people to rapidly change attention to at least two separate spatial locations, the facial expression and the hand signs of the speaker. Overtraining imposed by sign language demands might have modified certain characteristics of the spatial attention operations. To test that, a spatial orienting task was used in two experiments. Experiment 1 showed that deaf subjects reoriented their attention to the target location faster than hearing subjects in invalid trials. Experiment 2 indicated that inhibition of return decays faster in deaf than in hearing people. These results suggest that deaf subjects can disengage their attention faster than hearing subjects, fostering search of relevant information in more spatial locations.
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