Aging does not affect integration times for the perception of depth from motion parallax
| Autor: | Mark Nawrot, Jessica Holmin |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Male
Time delay and integration Aging Time Factors Adolescent genetic structures Computer science media_common.quotation_subject Motion Perception Stimulus (physiology) Retina Article 050105 experimental psychology Young Adult 03 medical and health sciences 0302 clinical medicine Optics Perception Psychophysics Humans 0501 psychology and cognitive sciences Computer vision Aged media_common Depth Perception Depth from motion business.industry 05 social sciences Observer (special relativity) Middle Aged Pursuit Smooth Sensory Systems Ophthalmology Female Artificial intelligence Kinetic depth effect Parallax business Depth perception 030217 neurology & neurosurgery |
| Zdroj: | Vision Research. 140:81-88 |
| ISSN: | 0042-6989 |
| DOI: | 10.1016/j.visres.2017.05.016 |
| Popis: | To successfully navigate throughout the world, observers must rapidly recover depth information. One depth cue that is especially important for a moving observer is motion parallax. To perceive unambiguous depth from motion parallax, the visual system must integrate information from two different proximal signals, retinal image motion and a pursuit eye movement. Previous research has shown that aging affects both of these necessary components for motion parallax depth perception, but no research has yet investigated how aging affects the mechanism for integrating motion and pursuit information to recover depth from motion parallax. The goal of the current experiment was to assess the integration time required by older adults to process depth information. In four psychophysical conditions, younger and older observers made motion and depth judgments about stationary or translating random-dot stimuli. Stimulus presentations in all four psychophysical conditions were followed by a high-contrast pattern mask, and minimum stimulus presentation durations (stimulus-to-mask onset asynchrony, or SOA) were measured. These SOAs reflect the minimum neural processing time required to make motion and motion parallax depth judgments. Pursuit latency was also measured. The results revealed that, after accounting for age-related delays in motion processing and pursuit onset, older and younger adults required similar temporal intervals to combine retinal image motion with an internal pursuit signal for the perception of depth. These results suggest that the mechanism for motion and pursuit integration is not affected by age. |
| Databáze: | OpenAIRE |
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