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Articles 1 - 8 of 8
Full-Text Articles in Social and Behavioral Sciences
Vection During Conflicting Multisensory Information About The Axis, Magnitude And Direction Of Self-Motion, April Ash, Stephen Palmisano
Vection During Conflicting Multisensory Information About The Axis, Magnitude And Direction Of Self-Motion, April Ash, Stephen Palmisano
Faculty of Health and Behavioural Sciences - Papers (Archive)
We examined the vection induced by consistent and conflicting multisensory information about self-motion. Observers viewed displays simulating constant-velocity self-motion in depth while physically oscillating their heads left ^ right or back ^ forth in time with a metronome. Their tracked head movements were either ignored or incorporated directly into the self-motion display (as an added simulated self-acceleration). When this head oscillation was updated into displays, sensory conflict was generated by simulating oscillation along: (i) an orthogonal axis to the head movement; or (ii) the same axis, but in a non-ecological direction. Simulated head oscillation always produced stronger vection than `no …
Simulated Angular Head Oscillation Enhances Vection In Depth, Juno Kim, Stephen Palmisano, Frederick Bonato
Simulated Angular Head Oscillation Enhances Vection In Depth, Juno Kim, Stephen Palmisano, Frederick Bonato
Faculty of Health and Behavioural Sciences - Papers (Archive)
Research has shown that adding simulated linear head oscillation to radial optic flow displays enhances the illusion of self-motion in depth (ie linear vection). We examined whether this oscillation advantage for vection was due to either the added motion parallax or retinal slip generated by insufficient compensatory eye movement during display oscillation. We constructed radial flow displays which simulated 1 Hz horizontal linear head oscillation (generates motion parallax) or angular head oscillation in yaw (generates no motion parallax).We found that adding simulated angular or linear head oscillation to radial flow increased the strength of linear vection in depth. Neither type …
Influence Of Head Orientation And Viewpoint Oscillation On Linear Vection, Pearl S. Guterman, Robert S. Allison, Stephen Palmisano, James E. Zacher
Influence Of Head Orientation And Viewpoint Oscillation On Linear Vection, Pearl S. Guterman, Robert S. Allison, Stephen Palmisano, James E. Zacher
Faculty of Health and Behavioural Sciences - Papers (Archive)
Sensory conRict !.heories predict thai adding simulatcd viewpoint oscillUlion to sclf-motion displays should generate significant and sustained visual-vestibul ar conniet and reduce !.he likelihood of itlusory self· motion (vccl ion). However. research sh.ows th.at viewpoinl oscillation enhances vectioil in uprigh.t observers. This study examined whclh.cr the oscil lation advantage for veclion depends on head orientalion with respect to gravily. Displays that simulated forwardlbackward self-motion wi th/Without horizontal and vertical viewpoint oscillation were presented to observers in uprigh.t (sealed and standing) and lying (supine. prone. and len side down) body postures. Viewpoint oscillation was found to enhance vection for 0111 oflhe …
Perceived Display Speed Helps Account For The 'Jitter Advantage' In Vection, D Apthorp, S Palmisano
Perceived Display Speed Helps Account For The 'Jitter Advantage' In Vection, D Apthorp, S Palmisano
Faculty of Health and Behavioural Sciences - Papers (Archive)
Illusions of self-motion in depth ('vection') are strongly enhanced when coherent viewpoint oscillation or jitter is added to the inducing optic flow displays (Palmisano et al, 2010 Perception2957-67). The underlying cause of this "jitter advantage" is still unknown. Here we investigate the possibility that perceived speed plays a role, since other manipulations that increase perceived speed (adding stereo, using contracting rather than expanding flow) also increase vection in depth, and reducing perceived speed reduces vection. First, in a 2AFC procedure, we measured PSEs for smooth and vertically oscillating motion-in-depth displays; oscillating displays were uniformly perceived as faster. Then we used …
Directionless Vection: A New Illusory Self-Motion Perception, Takeharu Seno, Y Yamada, Stephen A. Palmisano
Directionless Vection: A New Illusory Self-Motion Perception, Takeharu Seno, Y Yamada, Stephen A. Palmisano
Faculty of Health and Behavioural Sciences - Papers (Archive)
We report a new visual illusion, "directionless vection." When expanding and contracting optic flows are simultaneously presented in the same depth plane, observers can perceive illusory self-motion (vection) without direction
Hunger Enhances Vertical Vection, Takeharu Seno, Hiroyuki Ito, Shoji Sunaga, Stephen Palmisano
Hunger Enhances Vertical Vection, Takeharu Seno, Hiroyuki Ito, Shoji Sunaga, Stephen Palmisano
Faculty of Health and Behavioural Sciences - Papers (Archive)
Hunger was found to facilitate visually induced illusory upward and downward self-motions (vertical vection), but not illusory self-motion in depth (vection in depth). We propose that the origin of this hunger effect lies in the possibility that vertical self-motions (both real and illusory) are more likely to induce changes in visceral state.
Horizontal Fixation Point Oscillation And Simulated Viewpoint Oscillation Both Increase Vection In Depth, Stephen Palmisano, Juno Kim, Tom C. A Freeman
Horizontal Fixation Point Oscillation And Simulated Viewpoint Oscillation Both Increase Vection In Depth, Stephen Palmisano, Juno Kim, Tom C. A Freeman
Faculty of Health and Behavioural Sciences - Papers (Archive)
Previous research has shown that vection can be enhanced by adding horizontal simulated viewpoint oscillation to radial flow. Adding a horizontally oscillating fixation target to purely radial flow induces a superficially similar illusion of self-motion, where the observer's perceived heading oscillates left and right as their eyes pursue the moving target. This study directly compared the vection induced by these two conditions for the first time. Adding fixation point oscillation and simulated viewpoint oscillation to radial flow were both found to improve vection (relative to no oscillation control displays). Neither vection advantage could be explained in terms of differences in …
Vection Can Be Induced Without Global-Motion Awareness, Takeharu Seno, Stephen A. Palmisano, Hiroyuki Ito, Shoji Sunaga
Vection Can Be Induced Without Global-Motion Awareness, Takeharu Seno, Stephen A. Palmisano, Hiroyuki Ito, Shoji Sunaga
Faculty of Health and Behavioural Sciences - Papers (Archive)
A new vection illusion is reported. Vection was induced even though there was no consciously perceived global display motion corresponding to the self-motion. The resulting experience can be summarised as: ``I feel that I am moving but I do not know why''.