Microsaccades and covert attention: Evidence from a continuous, divided attention task
نویسندگان
چکیده
منابع مشابه
Microsaccades Are an Index of Covert Attention
Horowitz, Fine, Fencsik, Yurgenson, and Wolfe (2007, this issue) investigated the relation between microsaccade congruency (MC, the congruency between the direction of the microsaccade and the location of the target) and reaction time (RT) in a spatial cuing paradigm and concluded that ‘‘fixational eye movements are not an index of covert attention.’’ We show that microsaccade direction is a re...
متن کاملSpontaneous microsaccades reflect shifts in covert attention.
Microsaccade rate during fixation is modulated by the presentation of a visual stimulus. When the stimulus is an endogenous attention cue, the ensuing microsaccades tend to be directed toward the cue. This finding has been taken as evidence that microsaccades index the locus of spatial attention. But the vast majority of microsaccades that subjects make are not triggered by visual stimuli. Unde...
متن کاملMicrosaccades uncover the orientation of covert attention
Fixational eye movements are subdivided into tremor, drift, and microsaccades. All three types of miniature eye movements generate small random displacements of the retinal image when viewing a stationary scene. Here we investigate the modulation of microsaccades by shifts of covert attention in a classical spatial cueing paradigm. First, we replicate the suppression of microsaccades with a min...
متن کاملEvidence of preliminary response preparation from a divided attention task.
In a divided attention situation, preliminary response activations produced by stimuli on one channel were revealed through their effects on responses to stimuli on a secondary probe channel. Subjects performed concurrent but independent four-choice reaction-time tasks using the same four response fingers (middle and index fingers on both hands). In the main task, targets were large and small S...
متن کاملModulation of microsaccades in monkey during a covert visual attention task.
The use of awake, fixating monkeys in neuroscience has allowed significant advances in understanding numerous brain functions. However, fixation is an active process, with the occurrence of incessant eye movements, including rapid ones called microsaccades. Even though microsaccades have been shown to be modulated by stimulus and cognitive processes in humans, it is not known to what extent the...
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ژورنال
عنوان ژورنال: Journal of Eye Movement Research
سال: 2019
ISSN: 1995-8692
DOI: 10.16910/jemr.12.6.6