Attentional Modulation of Self-Motion Perception

Perception ◽  
10.1068/p5037 ◽  
2003 ◽  
Vol 32 (4) ◽  
pp. 475-484 ◽  
Author(s):  
Michiteru Kitazaki ◽  
Takao Sato
Keyword(s):  
Motion Perception ◽  
Visual Motion ◽  
Depth Plane ◽  
Relative Depth ◽  
Attentional Modulation ◽  
Motion Energy ◽  
Large Display ◽  
Attentional Effect ◽  
Self Motion ◽  
Direction Opposite

Attentional effects on self-motion perception (vection) were examined by using a large display in which vertical stripes containing upward or downward moving dots were interleaved to balance the total motion energy for the two directions. The dots moving in the same direction had the same colour, and subjects were asked to attend to one of the two colours. Vection was perceived in the direction opposite to that of non-attended motion. This indicates that non-attended visual motion dominates vection. The attentional effect was then compared with effects of relative depth. Clear attentional effects were again found when there was no relative depth between dots moving in opposite directions, but the effect of depth was much stronger for stimuli with a relative depth. Vection was mainly determined by motion in the far depth plane, although some attentional effects were evident even in this case. These results indicate that attentional modulation for vection exists, but that it is overridden when there is a relative depth between the two motion components.

Vertical linear self-motion perception during visual and inertial motion: More than weighted summation of sensory inputs

2005 ◽  
Vol 15 (4) ◽  
pp. 185-195 ◽  
Author(s):  
W.G. Wright ◽  
P. DiZio ◽  
J.R. Lackner
Keyword(s):  
Motion Perception ◽  
Visual Motion ◽  
Test Chamber ◽  
Vestibular Stimulation ◽  
Visual Scene ◽  
Inertial Motion ◽  
Physical Test ◽  
Head Mounted Display ◽  
Linear Oscillation ◽  
Self Motion

We evaluated visual and vestibular contributions to vertical self motion perception by exposing subjects to various combinations of 0.2 Hz vertical linear oscillation and visual scene motion. The visual stimuli presented via a head-mounted display consisted of video recordings of the test chamber from the perspective of the subject seated in the oscillator. In the dark, subjects accurately reported the amplitude of vertical linear oscillation with only a slight tendency to underestimate it. In the absence of inertial motion, even low amplitude oscillatory visual motion induced the perception of vertical self-oscillation. When visual and vestibular stimulation were combined, self-motion perception persisted in the presence of large visual-vestibular discordances. A dynamic visual input with magnitude discrepancies tended to dominate the resulting apparent self-motion, but vestibular effects were also evident. With visual and vestibular stimulation either spatially or temporally out-of-phase with one another, the input that dominated depended on their amplitudes. High amplitude visual scene motion was almost completely dominant for the levels tested. These findings are inconsistent with self-motion perception being determined by simple weighted summation of visual and vestibular inputs and constitute evidence against sensory conflict models. They indicate that when the presented visual scene is an accurate representation of the physical test environment, it dominates over vestibular inputs in determining apparent spatial position relative to external space.

Separate Presentation of Additional Accelerating Motion Does not Enhance Visually Induced Self-Motion Perception

2013 ◽  
Vol 26 (3) ◽  
pp. 277-285 ◽  
Author(s):  
Shinji Nakamura
Keyword(s):  
Motion Perception ◽  
Visual Motion ◽  
Main Axis ◽  
Psychophysical Experiment ◽  
Simple Hypothesis ◽  
Expansion Pattern ◽  
Perception Of Self ◽  
Oscillating Motion ◽  
Self Motion ◽  
Perceptual Mechanism

It has been repeatedly reported that visual stimuli containing a jittering/oscillating motion component can induce self-motion perception more strongly than a pure radial expansion pattern. A psychophysical experiment with 11 observers revealed that the additional accelerating components of the visual motion have to be convoluted with the motion of the main-axis to facilitate self-motion perception; additional motion presented in an isolated fashion impairs the perception of self-motion. These results are inconsistent with a simple hypothesis about the perceptual mechanism underlying the advantage of jitter/oscillation, which assumes that the accelerating component induces an additional self-motion independently of the main motion at the first stage, and then the two self-motions induced by the main motion and the additional component become integrated.

Motion Processing in Primates

2017 ◽  
Author(s):  
Tyler S. Manning ◽  
Kenneth H. Britten
Keyword(s):  
Motion Perception ◽  
Moving Objects ◽  
Visual Motion ◽  
Experimental Manipulation ◽  
Image Motion ◽  
Motion Processing ◽  
Entire Visual Field ◽  
Self Motion ◽  
Physiological Research ◽  
Support Motion

The ability to see motion is critical to survival in a dynamic world. Decades of physiological research have established that motion perception is a distinct sub-modality of vision supported by a network of specialized structures in the nervous system. These structures are arranged hierarchically according to the spatial scale of the calculations they perform, with more local operations preceding those that are more global. The different operations serve distinct purposes, from the interception of small moving objects to the calculation of self-motion from image motion spanning the entire visual field. Each cortical area in the hierarchy has an independent representation of visual motion. These representations, together with computational accounts of their roles, provide clues to the functions of each area. Comparisons between neural activity in these areas and psychophysical performance can identify which representations are sufficient to support motion perception. Experimental manipulation of this activity can also define which areas are necessary for motion-dependent behaviors like self-motion guidance.

Perceptually Plausible Sounds Facilitate Visually Induced Self-Motion Perception (Vection)

Perception ◽  
10.1068/p7184 ◽  
2012 ◽  
Vol 41 (5) ◽  
pp. 577-593 ◽  
Author(s):  
Takeharu Seno ◽  
Emi Hasuo ◽  
Hiroyuki Ito ◽  
Yoshitaka Nakajima
Keyword(s):  
Motion Perception ◽  
Visual Motion ◽  
Visual Stimuli ◽  
Horizontal Direction ◽  
Auditory Stimuli ◽  
Motion Field ◽  
Self Motion

We examined whether and how sounds influence visually induced illusory self-motion (vection). Visual stimuli were presented for 40 s. They were made radially, expanding or contracting visual motion field and luminance-defined gratings drifting in a vertical or horizontal direction. Auditory stimuli were presented with the visual stimuli in most conditions; we employed sounds that increased or decreased in intensity, or ascended or descended in frequency. As a result, the sound which increased in intensity facilitated forward vection, and the sound which ascended/descended in frequency facilitated upward/downward vection. The perceptual plausibility of the sound for the corresponding self-motion seemed an important factor of enhancing vection.

Change of Temporal-Order Judgment of Sounds during Long-Lasting Exposure to Large-Field Visual Motion

Perception ◽  
10.1068/p5692 ◽  
2008 ◽  
Vol 37 (11) ◽  
pp. 1649-1666 ◽  
Author(s):  
Wataru Teramoto ◽  
Hiroshi Watanabe ◽  
Hiroyuki Umemura ◽  
Shinichi Kita
Keyword(s):  
Visual Motion ◽  
Temporal Order ◽  
Temporal Order Judgment ◽  
Stimulus Onset ◽  
Large Field ◽  
Auditory Modality ◽  
Heading Direction ◽  
Small Display ◽  
Self Motion ◽  
Direction Opposite

The perceived temporal order of external successive events does not always follow their physical temporal order. We examined the contribution of self-motion mechanisms in the perception of temporal order in the auditory modality. We measured perceptual biases in the judgment of the temporal order of two short sounds presented successively, while participants experienced visually induced self-motion (yaw-axis circular vection) elicited by viewing long-lasting large-field visual motion. In experiment 1, a pair of white-noise patterns was presented to participants at various stimulus-onset asynchronies through headphones, while they experienced visually induced self-motion. Perceived temporal order of auditory events was modulated by the direction of the visual motion (or self-motion). Specifically, the sound presented to the ear in the direction opposite to the visual motion (ie heading direction) was perceived prior to the sound presented to the ear in the same direction. Experiments 2A and 2B were designed to reduce the contributions of decisional and/or response processes. In experiment 2A, the directional cueing of the background (left or right) and the response dimension (high pitch or low pitch) were not spatially associated. In experiment 2B, participants were additionally asked to report which of the two sounds was perceived ‘second’. Almost the same results as in experiment 1 were observed, suggesting that the change in temporal order of auditory events during large-field visual motion reflects a change in perceptual processing. Experiment 3 showed that the biases in the temporal-order judgments of auditory events were caused by concurrent actual self-motion with a rotatory chair. In experiment 4, using a small display, we showed that ‘pure’ long exposure to visual motion without the sensation of self-motion was not responsible for this phenomenon. These results are consistent with previous studies reporting a change in the perceived temporal order of visual or tactile events depending on the direction of self-motion. Hence, large-field induced (ie optic flow) self-motion can affect the temporal order of successive external events across various modalities.

MST Responses to Pursuit Across Optic Flow With Motion Parallax

2000 ◽  
Vol 84 (2) ◽  
pp. 818-826 ◽  
Author(s):  
Urmen D. Upadhyay ◽  
William K. Page ◽  
Charles J. Duffy
Keyword(s):  
Flow Field ◽  
Optic Flow ◽  
Visual Motion ◽  
Motion Parallax ◽  
Depth Plane ◽  
Relative Depth ◽  
Depth Cues ◽  
Medial Superior Temporal ◽  
Heading Direction ◽  
Mst Neurons

Self-movement creates the patterned visual motion of optic flow with a focus of expansion (FOE) that indicates heading direction. During pursuit eye movements, depth cues create a retinal flow field that contains multiple FOEs, potentially complicating heading perception. Paradoxically, human heading perception during pursuit is improved by depth cues. We have studied medial superior temporal (MST) neurons to see whether their heading selectivity is also improved under these conditions. The responses of 134 MST neurons were recorded during the presentation of optic flow stimuli containing one or three speed-defined depth planes. During pursuit, multiple depth-plane stimuli evoked larger responses (71% of neurons) and stronger heading selectivity (70% of neurons). Responses to the three speed-defined depth-planes presented separately showed that most neurons (54%) preferred one of the planes. Responses to multiple depth-plane stimuli were larger than the averaged responses to the three component planes, suggesting enhancing interactions between depth-planes. Thus speed preferences create selective responses to one of many depth-planes in the retinal flow field. The presence of multiple depth-planes enhances those responses. These properties might improve heading perception during pursuit and contribute to relative depth perception.

scholarly journals Attentional modulation of visual motion perception using novel wavelet stimuli

2010 ◽  
Vol 1 (3) ◽  
pp. 84-84
Author(s):  
N. Tsuchiya ◽  
G. Rees ◽  
J. Braun ◽  
C. Koch
Keyword(s):  
Motion Perception ◽  
Visual Motion ◽  
Attentional Modulation ◽  
Visual Motion Perception
Sign in / Sign up

Export Citation Format

Share Document