Abstract：
:During free viewing visual search, observers often refixate the same locations several times before and after target detection is reported with a button press. We analyzed the rate of microsaccades in the sequence of refixations made during visual search and found two important components. One related to the visual content of the region being fixated; fixations on targets generate more microsaccades and more microsaccades are generated for those targets that are more difficult to disambiguate. The other empathizes non-visual decisional processes; fixations containing the button press generate more microsaccades than those made on the same target but without the button press. Pupil dilation during the same refixations reveals a similar modulation. We inferred that generic sympathetic arousal mechanisms are part of the articulated complex of perceptual processes governing fixational eye movements.
journal_name
Vision Resjournal_title
Vision researchauthors
Privitera CM,Carney T,Klein S,Aguilar Mdoi
10.1016/j.visres.2013.12.001subject
Has Abstractpub_date
2014-02-01 00:00:00pages
43-50eissn
0042-6989issn
1878-5646pii
S0042-6989(13)00286-1journal_volume
95pub_type
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