Three-dimensional motion perception: comparing speed and speed change discrimination for looming stimuli
| Autor: | Abigail Lee, Julie M. Harris, Justin M. Ales |
|---|---|
| Přispěvatelé: | BBSRC, University of St Andrews. School of Psychology and Neuroscience, University of St Andrews. Institute of Behavioural and Neural Sciences |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
BF Psychology
Computer science Cognitive Neuroscience media_common.quotation_subject ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION BF Stimulus (physiology) Article 050105 experimental psychology Motion (physics) Task (project management) Speed change discrimination 03 medical and health sciences 0302 clinical medicine speed change discrimination Looming looming motion in depth Perception Motion in depth 0501 psychology and cognitive sciences lcsh:QH301-705.5 Speed discrimination media_common 05 social sciences DAS Cell Biology Sensory Systems Ophthalmology Interval (music) lcsh:Biology (General) Duration (music) RC0321 Three dimensional motion speed discrimination Depth perception RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry 030217 neurology & neurosurgery Optometry Cognitive psychology |
| Zdroj: | Vision Volume 4 Issue 3 Vision, Vol 4, Iss 33, p 33 (2020) |
| DOI: | 10.1101/2020.04.03.023879 |
| Popis: | Judging the speed of objects moving in three dimensions is important in our everyday lives because we interact with objects in a three-dimensional world. However, speed perception has been seldom studied for motion in depth, particularly when using monocular cues such as looming. Here, we compared speed discrimination, and speed change discrimination, for looming stimuli, in order to better understand what visual information is used for these tasks. For the speed discrimination task, we manipulated the distance and duration information available, in order to investigate if participants were specifically using speed information. For speed change discrimination, total distance and duration were held constant hence, they could not be used to successfully perform that task. For the speed change discrimination task, our data were consistent with observers not responding specifically to speed changes within an interval. Instead, they may have used alternative, arguably less optimal, strategies to complete the task. Evidence suggested that participants used a variety of cues to complete the speed discrimination task, not always solely relying on speed. Further, our data suggested that participants may have switched between cues on a trial to trial basis. We conclude that speed changes in looming stimuli were not used in a speed change discrimination task, and that naï ve participants may not always exclusively use speed for speed discrimination. |
| Databáze: | OpenAIRE |
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