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Spatial and temporal attention revealed by microsaccades

Pastukhov, Alexander, Vonau, Victoria, Stonkute, Solveiga and Braun, Jochen 2013. Spatial and temporal attention revealed by microsaccades. Vision Research 85 , pp. 45-67. 10.1016/j.visres.2012.11.004

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Abstract

We compared the spatial and temporal allocation of attention as revealed by microsaccades. Observers viewed several concurrent “rapid serial visual presentation” (RSVP) streams in the periphery while maintaining fixation. They continually attended to, and discriminated targets in one particular, cued stream. Over and above this continuous allocation, spatial attention transients (“attention shifts”) were prompted by changes in the cued stream location and temporal attention transients (“attentional blinks”) by successful target discriminations. Note that the RSVP paradigm avoided the preparatory suppression of microsaccades in anticipation of stimulus or task events, which had been prominent in earlier studies. Both stream changes and target discriminations evoked residual modulations of microsaccade rate and direction, which were consistent with the presumed attentional dynamics in each case (i.e., attention shift and attentional blink, respectively). Interestingly, even microsaccades associated with neither stream change nor target discrimination reflected the continuous allocation of attention, inasmuch as their direction was aligned with the meridian of the target stream. We conclude that attentional allocation shapes microsaccadic activity continuously, not merely during dynamic episodes such as attentional shifts or blinks.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Uncontrolled Keywords: Attention; Sustained attention; Microsaccades; Eye movements; Superior colliculus
Publisher: Elsevier
ISSN: 0042-6989
Last Modified: 27 Mar 2020 02:21
URI: https://orca.cardiff.ac.uk/id/eprint/52675

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