Attention during sequences of saccades along marked and memorized paths
| Autor: | Barbara Anne Dosher, Brian S. Schnitzer, Timothy M. Gersch, Eileen Kowler |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Saccadic eye movements
media_common.quotation_subject Poison control Orientation discrimination Sequences Article 050105 experimental psychology 03 medical and health sciences Discrimination Psychological 0302 clinical medicine Memory Saccadic suppression of image displacement Motor control Orientation Perception Psychophysics Saccades Humans 0501 psychology and cognitive sciences Attention Eye Movement Measurements media_common Communication business.industry 05 social sciences Attentional control Eye movement Cognition Saccadic masking Sensory Systems Eye movements Ophthalmology Saccade Movement sequences Cues business Psychology Color Perception Photic Stimulation Psychomotor Performance 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | Vision Research. 49(10):1256-1266 |
| ISSN: | 0042-6989 |
| DOI: | 10.1016/j.visres.2007.10.030 |
| Popis: | Natural scenes are explored by combinations of saccadic eye movements and shifts of attention. The mechanisms that coordinate attention and saccades during ordinary viewing are not well understood because studies linking saccades and attention have focused mainly on single saccades made in isolation. This study used an orientation discrimination task to examine attention during sequences of saccades made through an array of targets and distractors. Perceptual measures showed that attention was distributed along saccadic paths when the paths were marked by color cues. When paths were followed from memory, attention rarely spread beyond the goal of the upcoming saccade. These different distributions of attention suggest the involvement of separate processes of attentional control during saccadic planning, one triggered by top-down selection of the saccadic target, and the other by activation linked to visual mechanisms not tied directly to saccadic planning. The concurrent activity of both processes extends the effective attentional field without compromising the accuracy, precision, or timing of saccades. |
| Databáze: | OpenAIRE |
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