Effects of head orientation and scene rigidity on vection. Guterman, P. & Allison, R. S. In Centre for Vision Research International Conference on Perceptual Organization, pages 65. York University, Toronto, June 23-26, 2015, 2015. abstract bibtex Changing head tilt relative to gravity changes the dynamic sensitivity of the otoliths to linear accelerations (gravitational and inertial). We explored whether visually induced self-motion (vection) is influenced by varying head tilt and optic flow direction with respect to gravity. We previously found that vection was enhanced when upright observers viewed vertical optic flow (i.e., simulating self-motion along the spinal axis) compared to horizontal flow. We hypothesized that if this benefit was due to aligning the visual motion signal with gravity, then inter-aural lamellar flow while laying on the side would provide a similar vection advantage. Observers stood and lay supine, prone, left and right side down, while viewing a translating random dot pattern simulating self-motion along the spinal or inter-aural axis. Vection magnitude estimates, onset, and duration were recorded. The results showed that aligning the direction of visual motion and gravity enhanced vection in side-laying observers, but when gravity was irrelevant—as in the supine and prone posture—spinal axis motion enhanced vection.However, perceived scene rigidity varied with head orientation (e.g., dots were seen as floating bubbles), so the issue of scene rigidity was examined by comparing vection in two environments: a rigid pipe structure which looked like a complex arrangement of plumbing pipes, and a field of dots. The results of varying head, motion direction, and perceived scene rigidity, will be discussed and may provide insight into whether self-motion perception is determined by a weighted summation of visual and vestibular signals.
@incollection{Guterman:nr,
abstract = {Changing head tilt relative to gravity changes the dynamic sensitivity of the otoliths to linear accelerations (gravitational and inertial). We explored whether visually induced self-motion (vection) is influenced by varying head tilt and optic flow direction with respect to gravity. We previously found that vection was enhanced when upright observers viewed vertical optic flow (i.e., simulating self-motion along the spinal axis) compared to horizontal flow. We hypothesized that if this benefit was due to aligning the visual motion signal with gravity, then inter-aural lamellar flow while laying on the side would provide a similar vection advantage. Observers stood and lay supine, prone, left and right side down, while viewing a translating random dot pattern simulating self-motion along the spinal or inter-aural axis. Vection magnitude estimates, onset, and duration were recorded. The results showed that aligning the direction of visual motion and gravity enhanced vection in side-laying observers, but when gravity was irrelevant---as in the supine and prone posture---spinal axis motion enhanced vection.However, perceived scene rigidity varied with head orientation (e.g., dots were seen as floating bubbles), so the issue of scene rigidity was examined by comparing vection in two environments: a rigid pipe structure which looked like a complex arrangement of plumbing pipes, and a field of dots. The results of varying head, motion direction, and perceived scene rigidity, will be discussed and may provide insight into whether self-motion perception is determined by a weighted summation of visual and vestibular signals.
},
author = {Guterman, P. and Allison, R. S.},
booktitle = {Centre for Vision Research International Conference on Perceptual Organization},
date-added = {2015-06-23 11:38:16 +0000},
date-modified = {2015-06-23 11:38:16 +0000},
keywords = {Optic flow & Self Motion (also Locomotion & Aviation)},
month = {June 23-26, 2015},
pages = {65},
publisher = {York University, Toronto},
title = {Effects of head orientation and scene rigidity on vection},
year = {2015}}
Downloads: 0
{"_id":"2xTBFC74g299o8YDW","bibbaseid":"guterman-allison-effectsofheadorientationandscenerigidityonvection-2015","downloads":0,"creationDate":"2015-10-18T13:12:54.408Z","title":"Effects of head orientation and scene rigidity on vection","author_short":["Guterman, P.","Allison, R. S."],"year":2015,"bibtype":"incollection","biburl":"www.cse.yorku.ca/percept/papers/self.bib","bibdata":{"bibtype":"incollection","type":"incollection","abstract":"Changing head tilt relative to gravity changes the dynamic sensitivity of the otoliths to linear accelerations (gravitational and inertial). We explored whether visually induced self-motion (vection) is influenced by varying head tilt and optic flow direction with respect to gravity. We previously found that vection was enhanced when upright observers viewed vertical optic flow (i.e., simulating self-motion along the spinal axis) compared to horizontal flow. We hypothesized that if this benefit was due to aligning the visual motion signal with gravity, then inter-aural lamellar flow while laying on the side would provide a similar vection advantage. Observers stood and lay supine, prone, left and right side down, while viewing a translating random dot pattern simulating self-motion along the spinal or inter-aural axis. Vection magnitude estimates, onset, and duration were recorded. The results showed that aligning the direction of visual motion and gravity enhanced vection in side-laying observers, but when gravity was irrelevant—as in the supine and prone posture—spinal axis motion enhanced vection.However, perceived scene rigidity varied with head orientation (e.g., dots were seen as floating bubbles), so the issue of scene rigidity was examined by comparing vection in two environments: a rigid pipe structure which looked like a complex arrangement of plumbing pipes, and a field of dots. The results of varying head, motion direction, and perceived scene rigidity, will be discussed and may provide insight into whether self-motion perception is determined by a weighted summation of visual and vestibular signals. ","author":[{"propositions":[],"lastnames":["Guterman"],"firstnames":["P."],"suffixes":[]},{"propositions":[],"lastnames":["Allison"],"firstnames":["R.","S."],"suffixes":[]}],"booktitle":"Centre for Vision Research International Conference on Perceptual Organization","date-added":"2015-06-23 11:38:16 +0000","date-modified":"2015-06-23 11:38:16 +0000","keywords":"Optic flow & Self Motion (also Locomotion & Aviation)","month":"June 23-26, 2015","pages":"65","publisher":"York University, Toronto","title":"Effects of head orientation and scene rigidity on vection","year":"2015","bibtex":"@incollection{Guterman:nr,\n\tabstract = {Changing head tilt relative to gravity changes the dynamic sensitivity of the otoliths to linear accelerations (gravitational and inertial). We explored whether visually induced self-motion (vection) is influenced by varying head tilt and optic flow direction with respect to gravity. We previously found that vection was enhanced when upright observers viewed vertical optic flow (i.e., simulating self-motion along the spinal axis) compared to horizontal flow. We hypothesized that if this benefit was due to aligning the visual motion signal with gravity, then inter-aural lamellar flow while laying on the side would provide a similar vection advantage. Observers stood and lay supine, prone, left and right side down, while viewing a translating random dot pattern simulating self-motion along the spinal or inter-aural axis. Vection magnitude estimates, onset, and duration were recorded. The results showed that aligning the direction of visual motion and gravity enhanced vection in side-laying observers, but when gravity was irrelevant---as in the supine and prone posture---spinal axis motion enhanced vection.However, perceived scene rigidity varied with head orientation (e.g., dots were seen as floating bubbles), so the issue of scene rigidity was examined by comparing vection in two environments: a rigid pipe structure which looked like a complex arrangement of plumbing pipes, and a field of dots. The results of varying head, motion direction, and perceived scene rigidity, will be discussed and may provide insight into whether self-motion perception is determined by a weighted summation of visual and vestibular signals.\n},\n\tauthor = {Guterman, P. and Allison, R. S.},\n\tbooktitle = {Centre for Vision Research International Conference on Perceptual Organization},\n\tdate-added = {2015-06-23 11:38:16 +0000},\n\tdate-modified = {2015-06-23 11:38:16 +0000},\n\tkeywords = {Optic flow & Self Motion (also Locomotion & Aviation)},\n\tmonth = {June 23-26, 2015},\n\tpages = {65},\n\tpublisher = {York University, Toronto},\n\ttitle = {Effects of head orientation and scene rigidity on vection},\n\tyear = {2015}}\n\n","author_short":["Guterman, P.","Allison, R. S."],"key":"Guterman:nr","id":"Guterman:nr","bibbaseid":"guterman-allison-effectsofheadorientationandscenerigidityonvection-2015","role":"author","urls":{},"keyword":["Optic flow & Self Motion (also Locomotion & Aviation)"],"metadata":{"authorlinks":{"allison, r":"https://percept.eecs.yorku.ca/bibase%20pubs.shtml"}}},"search_terms":["effects","head","orientation","scene","rigidity","vection","guterman","allison"],"keywords":["optic flow & self motion (also locomotion & aviation)"],"authorIDs":["vnY8GQ5AKXHNi7dqd"],"dataSources":["kmmXSosvtyJQxBtzs","BPKPSXjrbMGteC59J"]}