Abstract
Gaze-triggered attention changes have been found in individuals with high autistic traits in the nonclinical population. However, gaze cues used in previous studies imply not only sociality of gaze but also the motion of gaze. To exclude the influence of motion, we manipulated the cue sociality by setting dot cues with similar motion characteristics as gaze cues to explore the underlying reasons of gaze-triggered attention changes in individuals with high autistic traits. We used a cueing paradigm within a visual matching task and recorded individuals' eye movements. Both the RT and eye movement of probe interface showed the benefit from gaze of the low autistic trait group was larger than that from dot and was larger than that of the high autistic trait group. While the high autistic trait group show similar benefit between gaze and dot. Eye movement results showed the dynamic changes of validity effect in two groups. The interaction between autistic traits and cue sociality was not significant within the 500 ms of cue presentation, marginally significant within 500-1,000 ms after cue presentation, but significant after 1,000 ms of cue presentation. The results demonstrated that the changes of gaze-triggered attention in individuals with high autistic traits was mainly caused by the sociality of gaze in the relative late stage.
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