Defining the temporal threshold for ocular fixation in free-viewing visuocognitive tasks

Patterns of ocular fixation in free-viewing tasks reflect aspects of visual attention and cognition. To quantify these patterns, fixations must be identified in raw eye movement data by applying explicit spatial and temporal thresholds. A temporal threshold of 200 ms is commonly used in clinical vis...

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Bibliographic Details
Published in:Journal of neuroscience methods 2003-09, Vol.128 (1), p.85-93
Main Authors: Manor, Barry R., Gordon, Evian
Format: Article
Language:English
Subjects:
Adult
Analysis of Variance
Cognition - physiology
Cognitive processing
Eye movement recording
Female
Fixation, Ocular - physiology
Humans
Male
Middle Aged
Ocular fixation definition
Photic Stimulation - methods
Sensory Thresholds - physiology
Statistical methods
Temporal fixation threshold
Time Factors
Visual Perception - physiology
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Summary:Patterns of ocular fixation in free-viewing tasks reflect aspects of visual attention and cognition. To quantify these patterns, fixations must be identified in raw eye movement data by applying explicit spatial and temporal thresholds. A temporal threshold of 200 ms is commonly used in clinical visuocognitive research, despite having been originally derived from a study of eye movements in reading. We systematically explored temporal fixation thresholds below 200 ms, using biologically relevant (human face) and abstract (complex geometric) stimuli. Short fixations (
ISSN:0165-0270
1872-678X
DOI:10.1016/S0165-0270(03)00151-1