Perception of heading without retinal optic flow

Macuga, Kristen L.; Loomis, Jack M.; Beall, Andrew C.; Kelly, Jonathan W.

doi:10.3758/bf03193708

Cited by 19 publications

(17 citation statements)

References 40 publications

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“…Also, stronger self-motion ratings were given when a degraded flow pattern was presented stereoscopically (Figure 2A) compared to synoptically. Both observations comply with earlier psychophysical work on heading perception from pure stereo cues (Macuga et al, 2006), and observations that stereo information makes heading detection more noise-tolerant in the presence of rotation (Van Den Berg and Brenner, 1994b). Because heading detection becomes non-trivial when gaze rotation disrupts the coincidence between focus of expansion and heading direction (Warren and Hannon, 1988), these perceptual observations suggest that the stereo signal contributes to the dissociation of translational and rotational components of flow.…”

Section: Discussionsupporting

confidence: 91%

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Differential responses in dorsal visual cortex to motion and disparity depth cues

Arnoldussen

Goossens

Berg

2013

Front. Hum. Neurosci.

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We investigated how interactions between monocular motion parallax and binocular cues to depth vary in human motion areas for wide-field visual motion stimuli (110 × 100°). We used fMRI with an extensive 2 × 3 × 2 factorial blocked design in which we combined two types of self-motion (translational motion and translational + rotational motion), with three categories of motion inflicted by the degree of noise (self-motion, distorted self-motion, and multiple object-motion), and two different view modes of the flow patterns (stereo and synoptic viewing). Interactions between disparity and motion category revealed distinct contributions to self- and object-motion processing in 3D. For cortical areas V6 and CSv, but not the anterior part of MT+ with bilateral visual responsiveness (MT+/b), we found a disparity-dependent effect of rotational flow and noise: When self-motion perception was degraded by adding rotational flow and moderate levels of noise, the BOLD responses were reduced compared with translational self-motion alone, but this reduction was cancelled by adding stereo information which also rescued the subject's self-motion percept. At high noise levels, when the self-motion percept gave way to a swarm of moving objects, the BOLD signal strongly increased compared to self-motion in areas MT+/b and V6, but only for stereo in the latter. BOLD response did not increase for either view mode in CSv. These different response patterns indicate different contributions of areas V6, MT+/b, and CSv to the processing of self-motion perception and the processing of multiple independent motions.

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Section: Discussionsupporting

confidence: 91%

“…This is reminiscent of previous perceptual studies using RT stimuli. In those studies stereo presentation improved heading discrimination only if noise was added to the flow (Van Den Berg and Brenner, 1994b; Macuga et al, 2006). …”

Section: Resultsmentioning

confidence: 99%

Differential responses in dorsal visual cortex to motion and disparity depth cues

Arnoldussen

Goossens

Berg

2013

Front. Hum. Neurosci.

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“…Whereas other work has shown that cyclopean displays can be used to catch a ball, follow a path, and judge heading ; Stance Macuga et al, 2006), this stimulus was not sufficient to stabilize posture in Experiment 1. However, it was also no different from the more traditional VR display.…”

Section: Discussionmentioning

confidence: 83%

Visual control of posture in real and virtual environments

Kelly

Riecke

Loomis

et al. 2008

Perception & Psychophysics

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Two experiments investigated the stabilizing influence of vision on human upright posture in real and virtual environments. Visual stabilization was assessed by comparing eyes-open to eyes-closed conditions while participants attempted to maintain balance in the presence of a stable visual scene. Visual stabilization in the virtual display was reduced compared to real world viewing. This difference was partially accounted for by the reduced field of view in the virtual display. When the retinal flow in the virtual display was removed by using dynamic random dot stereograms with single frame lifetimes (cyclopean stimuli), vision did not stabilize posture. There was also an overall larger stabilizing influence of vision when adopting more unstable stances (e.g., one-foot compared to side-by-side stance). Reducing the graphics latency of the virtual display by 63 did not increase visual stabilization in the virtual display. Other visual and psychological differences between real and virtual environments are discussed

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“…5 Steering involves moving so the center of the flow pattern is in the desired direction of travel. 4 Humans can perform locomotion activities with no flow information, 14,15 but alternate cognitive strategies may be employed, changing resource demands.…”

mentioning

confidence: 99%

The cognitive implications of virtual locomotion with a restricted field of view

et al. 2012

Self Cite

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A study was conducted to examine the impact, in terms of cognitive demands, of a restricted field of view (FOV) on semi-natural locomotion in virtual reality (VR). Participants were divided into two groups: high-FOV and low-FOV. They were asked to perform basic movements using a locomotion interface while simultaneously performing one of two memory tasks (spatial or verbal) or no memory task. The memory tasks were intended to simulate the competing demands when a user has primary tasks to perform while using an unnatural interface to move through the virtual world. Results show that participants remembered fewer spatial or verbal items when performing locomotion movements with a low FOV than with a high FOV. This equivalent verbal and spatial detriment may indicate that locomotion movements with a restricted FOV require additional general cognitive resources as opposed to spatial or verbal resource pools. This also emphasizes the importance of this research, as users of a system may allow primary task performance to suffer when performing locomotion. Movement start and completion times were also measured to examine resource requirements of specific aspects of movements. Understanding specific performance problems resulting from concurrent tasks can inform the design of systems. Copyright 2012 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. ABSTRACTA study was conducted to examine the impact, in terms of cognitive demands, of a restricted field of view (FOV) on semi-natural locomotion in virtual reality (VR). Participants were divided into two groups: high-FOV and low-FOV. They were asked to perform basic movements using a locomotion interface while simultaneously performing one of two memory tasks (spatial or verbal) or no memory task. The memory tasks were intended to simulate the competing demands when a user has primary tasks to perform while using an unnatural interface to move through the virtual world. Results show that participants remembered fewer spatial or verbal items when performing locomotion movements with a low FOV than with a high FOV. This equivalent verbal and spatial detriment may indicate that locomotion movements with a restricted FOV require additional general cognitive resources as opposed to spatial or verbal resource pools. This also emphasizes the importance of this research, as users of a system may allow primary task performance to suffer when performing locomotion. Movement start and completion times were also measured to examine resource requirements of specific aspects of movements.Understanding specific performance problems resulting from concurrent tasks can inform the design of systems.

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Perception of heading without retinal optic flow

Cited by 19 publications

References 40 publications

Differential responses in dorsal visual cortex to motion and disparity depth cues

Differential responses in dorsal visual cortex to motion and disparity depth cues

Visual control of posture in real and virtual environments

The cognitive implications of virtual locomotion with a restricted field of view

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