Hearing visual motion in depth

Nature ◽  
2002 ◽  
Vol 416 (6877) ◽  
pp. 172-174 ◽  
Author(s):  
Norimichi Kitagawa ◽  
Shigeru Ichihara
Keyword(s):  
Visual Motion ◽  
Motion In Depth

Hand Action in a Radial Direction Captures Visual Motion in Depth

Perception ◽  
1996 ◽  
Vol 25 (1_suppl) ◽  
pp. 138-138
Author(s):  
G Ishimura
Keyword(s):  
Radial Direction ◽  
Visual Motion ◽  
Dominant Hand ◽  
Frontoparallel Plane ◽  
Motion In Depth ◽  
Short Period ◽  
The Face ◽  
The Subject ◽  
Perceived Motion ◽  
Hand Action

Transversal hand action in the frontoparallel plane biases the perception of bistable visual motion. This has been called action capture. In daily behaviour, however, hand action in a ‘radial’ direction from the head might be more important, because we frequently reach our hand for an object in front of us while guiding the action with vision. The purpose of this study was to measure the strength of action capture in the radial direction. Horizontal luminance gratings were placed above and below the fixation point. Binocular disparity, perspective contour, and spatial frequency gradient cues were attached to the gratings so that they simulated the ‘ceiling’ and the ‘floor’ of a long corridor. The display was reflected on a tilted mirror to face upward. The subject looked into the display and moved his/her dominant hand toward, or away from, the face behind the mirror. Just after the action onset, detected by the computer, one of the two gratings (the ceiling or the floor) flickered in short period to simulate bistable visual motion in depth (approaching or departing). The subject indicated the perceived motion direction in the frontoparallel plane using a 2AFC (upward or downward) method. The results showed that perceived motion was significantly biased to the ‘departing’ direction when the hand moved ‘away from’ the face, and it was biased to the ‘approaching’ direction when the hand moved ‘toward’ it. It is concluded that action capture occurs not only in transversal but also in radial movements.

scholarly journals Interactions between cues to visual motion in depth

2014 ◽  
Vol 14 (2) ◽  
pp. 14-14 ◽  
Author(s):  
I. P. Howard ◽  
Y. Fujii ◽  
R. S. Allison
Keyword(s):  
Visual Motion ◽  
Motion In Depth

Monocular and Dichoptic Interactions between Moving and Stationary Stimuli

Perception ◽  
1993 ◽  
Vol 22 (9) ◽  
pp. 1111-1119 ◽  
Author(s):  
Nicholas J Wade ◽  
Michael T Swanston
Keyword(s):  
Visual Motion ◽  
The Other ◽  
Fixation Stimulus ◽  
Motion In Depth ◽  
Moving Stimuli ◽  
Stationary Stimulus ◽  
Binocular Interaction ◽  
Induced Motion ◽  
Moving Stimulus ◽  
Display Configuration

Visual motion of a physically stationary stimulus can be induced by the movement of adjacent stimuli. The frequencies of motion reports and the angular separations required to induce motion were determined for a number of stimulus configurations. A stationary stimulus was fixated in the centre of the display and the point at which induced motion was initially reported was measured. In the first experiment either one or two stationary stimuli were presented in the centre of a display and either one or two similar stimuli moved horizontally towards them. The percentage of trials on which motion was induced varied with the display configuration, being greatest with two moving and one stationary stimuli. The angular separations at which motion was reported were about 2 deg for all conditions. In the second experiment the binocular interaction of such induced motion was examined. A single static fixation stimulus was presented binocularly and a range of monocular or dichoptic conditions was examined: a single moving stimulus to one eye, two moving stimuli to one eye, or two moving stimuli dichoptically. Induced motion was reported on about 90% of the trials for the monocular and dichoptic conditions with two moving stimuli. Motion was first induced at similar angular separations by two moving stimuli, whether presented monocularly or dichoptically. Binocular interaction was further examined with a display that induced motion in the stimulus presented to one eye but not in that presented to the other: this resulted in the apparent motion in depth of the binocularly fixated stimulus.

The effects of stereo disparity on the behavioural and electrophysiological correlates of perception of audio–visual motion in depth

2015 ◽  
Vol 78 ◽  
pp. 51-62 ◽  
Author(s):  
Neil R. Harrison ◽  
Sian Witheridge ◽  
Alexis Makin ◽  
Sophie M. Wuerger ◽  
Alan J. Pegna ◽  
...  
Keyword(s):  
Visual Motion ◽  
Motion In Depth ◽  
Stereo Disparity

Misdirected visual motion: Mae and phi

1991 ◽  
Author(s):  
Eric J. Hiris ◽  
Robert H. Cormack ◽  
Randolph Blake
Keyword(s):  
Visual Motion

Spatial and Temporal Frequency Tuning of Motion-in-Depth Aftereffect

2008 ◽  
Vol 128 (7) ◽  
pp. 1015-1022
Author(s):  
Sheng Ge ◽  
Makoto Ichikawa ◽  
Atsushi Osa ◽  
Keiji Iramina ◽  
Hidetoshi Miike
Keyword(s):  
Frequency Tuning ◽  
Temporal Frequency ◽  
Motion In Depth

Case Report: Management of a Patient with mTBI and Vestibular Hypofunction with the Binasal Occlusion Technique

2018 ◽  
pp. 87-90
Keyword(s):  
Case Report ◽  
Visual Motion ◽  
Hand Movement ◽  
Motion Sensitivity ◽  
Vestibular Hypofunction ◽  
First Case ◽  
Neurological Exam ◽  
History Of ◽  
Occlusion Technique ◽  
Visual Vertigo

Background: Binasal Occlusion (BNO) is a clinical technique used by many neurorehabilitative optometrists in patients with mild traumatic brain injury (mTBI) and increased visual motion sensitivity (VMS) or visual vertigo. BNO is a technique in which partial occluders are added to the spectacle lenses to suppress the abnormal peripheral visual motion information. This technique helps in reducing VMS symptoms (i.e., nausea, dizziness, balance difficulty, visual confusion). Case Report: A 44-year-old AA female presented for a routine eye exam with a history of mTBI approximately 33 years ago. She was suffering from severe dizziness for the last two years that was adversely impacting her ADLs. The dizziness occurred in all body positions and all environments throughout the day. She was diagnosed with vestibular hypofunction and had undergone vestibular therapy but reported little improvement. Neurological exam revealed dizziness with both OKN drum and hand movement, especially in the left visual field. BNO technique resulted in immediate relief of her dizziness symptoms. Conclusion: To our knowledge, this is the first case that illustrates how the BNO technique in isolation can be beneficial for patients with mTBI and vestibular hypofunction. It demonstrates the success that BNO has in filtering abnormal peripheral visual motion in these patients.

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