Displaying Optic Flow to Simulate Locomotion: Comparing Heading and Steering
نویسندگان
چکیده
منابع مشابه
Displaying optic flow to simulate locomotion: Comparing heading and steering
Optic flow can be used by humans to determine their direction of heading as well as controlling steering. Dot-flow displays have been widely used to investigate these abilities but it is unclear whether photorealistic textures would provide better information for controlling high-speed steering. Here, we examine the accuracy of heading judgements from dot-flow displays of different densities an...
متن کاملPerception of heading without retinal optic flow.
How do we determine where we are heading during visually controlled locomotion? Psychophysical research has shown that humans are quite good at judging their travel direction, or heading, from retinal optic flow. Here we show that retinal optic flow is sufficient, but not necessary, for determining heading. By using a purely cyclopean stimulus (random dot cinematogram), we demonstrate heading p...
متن کاملHeading recovery from optic flow: comparing performance of humans and computational models
Human observers can perceive their direction of heading with a precision of about a degree. Several computational models of the processes underpinning the perception of heading have been proposed. In the present study we set out to assess which of four candidate models best captured human performance; the four models we selected reflected key differences in terms of approach and methods to mode...
متن کاملStroke affects locomotor steering responses to changing optic flow directions.
BACKGROUND Stroke patients manifest steering difficulties during walking, which may arise from an altered perception of visual motion. OBJECTIVE To examine the ability of stroke patients to control their heading direction while walking in a virtual environment (VE) describing translational optic flows (OFs) expanding from different directions. METHODS The authors evaluated 10 stroke patient...
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Although previous studies have shown that people use both optic flow and target egocentric direction to walk or steer toward a goal, it remains in question how enriching the optic flow field affects the control of heading specified by optic flow and the control of target egocentric direction during goal-oriented locomotion. In the current study, we used a control-theoretic approach to separate ...
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ژورنال
عنوان ژورنال: i-Perception
سال: 2013
ISSN: 2041-6695,2041-6695
DOI: 10.1068/i0590