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Reaction times as an index of visual conspicuity when driving at night
- Source :
- Ophthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 22(5)
- Publication Year :
- 2002
-
Abstract
- Conspicuity refers to the visibility of objects that are either close to threshold or viewed in a cluttered environment. Conventional, threshold-based tests of vision are unlikely to be related to target visibility, because visual systems behave differently under supra-threshold and close-to-threshold conditions, or when low luminance levels are used. In these experiments, Reaction Times (RTs) are tested under a wide range of contrasts, luminances and spatial frequencies commonly encountered in the real world. We show that RTs are closely related to sensitivity and can therefore provide a method of measuring supra-threshold visual performance. The data are interpreted in terms of visual performance when driving, where a reduction in target visibility leads to increases in processing time.
- Subjects :
- Adult
Automobile Driving
Computer science
Poison control
Luminance
Contrast Sensitivity
Sensory threshold
Night vision
Range (statistics)
Reaction Time
Humans
Computer vision
Sensitivity (control systems)
Simulation
Lighting
business.industry
Visibility (geometry)
Accidents, Traffic
Darkness
Sensory Systems
Ophthalmology
Sensory Thresholds
Artificial intelligence
Spatial frequency
business
Photic Stimulation
Psychomotor Performance
Optometry
Subjects
Details
- ISSN :
- 02755408
- Volume :
- 22
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Ophthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)
- Accession number :
- edsair.doi.dedup.....756f7c816986d36159aeedb50616be80