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Asymmetrical control of fixation durations in scene viewing
Asymmetrical control of fixation durations in scene viewing
- Source :
- Walshe, R C & Nuthmann, A 2014, ' Asymmetrical control of fixation durations in scene viewing ', Vision Research, vol. 100, pp. 38-46 . https://doi.org/10.1016/j.visres.2014.03.012
- Publication Year :
- 2014
-
Abstract
- In two experiments we investigated the control of fixation durations in naturalistic scene viewing. Empirical evidence from the scene onset delay paradigm and numerical simulations of such data with the CRISP model [Psychological Review 117 (2010) 382–405] have suggested that processing related difficulties may lead to prolonged fixation durations. Here, we ask whether processing related facilitation may lead to comparable decreases to fixation durations. Research in visual search and reading have reported only uni-directional shifts. To address the question of unidirectional (slow down) as opposed to bidirectional (slow down and speed up) adjustment of fixation durations in the context of scene viewing, we used a saccade-contingent display change method to either reduce or increase the luminance of the scene during prespecified critical fixations. Degrading the stimulus by shifting luminance down resulted in an immediate increase to fixation durations. However, clarifying the stimulus by shifting luminance upwards did not result in a comparable decrease to fixation durations. These results suggest that the control of fixation durations in scene viewing is asymmetric, as has been reported for visual search and reading.
- Subjects :
- Adult
Male
Time Factors
genetic structures
Computer science
Direct control
Fixation, Ocular
Stimulus (physiology)
Luminance
Young Adult
Saccades
Humans
Attention
Computer vision
Lighting
Visual search
Communication
Fixation durations
business.industry
Eye movement
Fixation (psychology)
Scene viewing
Sensory Systems
Eye movements
Ophthalmology
Visual Perception
Facilitation
Female
Artificial intelligence
business
Photic Stimulation
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Walshe, R C & Nuthmann, A 2014, ' Asymmetrical control of fixation durations in scene viewing ', Vision Research, vol. 100, pp. 38-46 . https://doi.org/10.1016/j.visres.2014.03.012
- Accession number :
- edsair.doi.dedup.....47a996e3b68d767292c5dcc322398f20
- Full Text :
- https://doi.org/10.1016/j.visres.2014.03.012