@incollection{Keyvanara:2020di,
	abstract = {Saccadic suppression of image displacement (SSD) is a perceptual feature of our visual system that oc-curs  when  we  move  our  gaze  from  one  fi xation to another.SSD has mostly been studied with the head fi xed. Normally when we move about we move our head as well as our eyes, although in virtual reality the virtual head movements may not correspond to the  physical  head  movements  producing  a  confl ict between  vision  and  the  vestibular  sense.  Here  we  investigated  the  SSD  effect  during  simulated  head  movements. Participants' eyes were tracked as they viewed  a  set  of  3D  scenes  with  a  constant  (right-ward)  camera  pan.  They  produced  a  horizontal  (rightward) saccade upon displacement of an object in  the  scene,  during  which  a  sudden  shift  of  the  scene occurred in one of 10 different directions. Us-ing  a  Bayesian  adaptive  procedure,  we  estimate  thresholds  for  detection  of  these  sudden  camera  movements.  Within-subjects  analysis  showed  that  when users made horizontal saccades, the horizontal image translations were signifi cantly less detectable than vertical image translations and also less notice-able than and in-depth translations. Likewise, hori-zontal transsaccadic rotations were signifi cantly less detectable  than  vertical  image  rotations.  These  re-sults imply that in 3D virtual environment, when us-ers   pan   their   head   while   making   a   horizontal   saccade, they would be less susceptible to noticing horizontal changes to their viewpoint that occur dur-ing  a  saccade  compared  to  vertical  or  in-depth  changes. We are currently extending these studies to measure SSD during actual head motions in immer-sive VR, allowing us to assess the contributions of the visual, vestibular and proprioceptive senses. The interaction  between  head  motion,  eye  movement  and  suppression  of  graphical  updates  during  sac-cades can provide insight into designing better VR experiences.
},
	author = {Keyvanara, M. and Allison, R. S.},
	booktitle = {Vestibular Oriented Research Meeting, Journal of Vestibular Research},
	date-added = {2020-07-07 13:46:56 -0400},
	date-modified = {2020-07-07 13:48:02 -0400},
	doi = {10.3233/VES-200699},
	keywords = {Eye Movements & Tracking},
	pages = {142},
	title = {Effects of simulated head motion and saccade direction on sensitivity to transsaccadic image motion},
	volume = {30},
	year = {2020},
	url-1 = {https://doi.org/10.3233/VES-200699}}

{"_id":"J3RihqLckhjiqFj5c","bibbaseid":"keyvanara-allison-effectsofsimulatedheadmotionandsaccadedirectiononsensitivitytotranssaccadicimagemotion-2020","author_short":["Keyvanara, M.","Allison, R. S."],"bibdata":{"bibtype":"incollection","type":"incollection","abstract":"Saccadic suppression of image displacement (SSD) is a perceptual feature of our visual system that oc-curs when we move our gaze from one fi xation to another.SSD has mostly been studied with the head fi xed. Normally when we move about we move our head as well as our eyes, although in virtual reality the virtual head movements may not correspond to the physical head movements producing a confl ict between vision and the vestibular sense. Here we investigated the SSD effect during simulated head movements. Participants' eyes were tracked as they viewed a set of 3D scenes with a constant (right-ward) camera pan. They produced a horizontal (rightward) saccade upon displacement of an object in the scene, during which a sudden shift of the scene occurred in one of 10 different directions. Us-ing a Bayesian adaptive procedure, we estimate thresholds for detection of these sudden camera movements. Within-subjects analysis showed that when users made horizontal saccades, the horizontal image translations were signifi cantly less detectable than vertical image translations and also less notice-able than and in-depth translations. Likewise, hori-zontal transsaccadic rotations were signifi cantly less detectable than vertical image rotations. These re-sults imply that in 3D virtual environment, when us-ers pan their head while making a horizontal saccade, they would be less susceptible to noticing horizontal changes to their viewpoint that occur dur-ing a saccade compared to vertical or in-depth changes. We are currently extending these studies to measure SSD during actual head motions in immer-sive VR, allowing us to assess the contributions of the visual, vestibular and proprioceptive senses. The interaction between head motion, eye movement and suppression of graphical updates during sac-cades can provide insight into designing better VR experiences. ","author":[{"propositions":[],"lastnames":["Keyvanara"],"firstnames":["M."],"suffixes":[]},{"propositions":[],"lastnames":["Allison"],"firstnames":["R.","S."],"suffixes":[]}],"booktitle":"Vestibular Oriented Research Meeting, Journal of Vestibular Research","date-added":"2020-07-07 13:46:56 -0400","date-modified":"2020-07-07 13:48:02 -0400","doi":"10.3233/VES-200699","keywords":"Eye Movements & Tracking","pages":"142","title":"Effects of simulated head motion and saccade direction on sensitivity to transsaccadic image motion","volume":"30","year":"2020","url-1":"https://doi.org/10.3233/VES-200699","bibtex":"@incollection{Keyvanara:2020di,\n\tabstract = {Saccadic suppression of image displacement (SSD) is a perceptual feature of our visual system that oc-curs when we move our gaze from one fi xation to another.SSD has mostly been studied with the head fi xed. Normally when we move about we move our head as well as our eyes, although in virtual reality the virtual head movements may not correspond to the physical head movements producing a confl ict between vision and the vestibular sense. Here we investigated the SSD effect during simulated head movements. Participants' eyes were tracked as they viewed a set of 3D scenes with a constant (right-ward) camera pan. They produced a horizontal (rightward) saccade upon displacement of an object in the scene, during which a sudden shift of the scene occurred in one of 10 different directions. Us-ing a Bayesian adaptive procedure, we estimate thresholds for detection of these sudden camera movements. Within-subjects analysis showed that when users made horizontal saccades, the horizontal image translations were signifi cantly less detectable than vertical image translations and also less notice-able than and in-depth translations. Likewise, hori-zontal transsaccadic rotations were signifi cantly less detectable than vertical image rotations. These re-sults imply that in 3D virtual environment, when us-ers pan their head while making a horizontal saccade, they would be less susceptible to noticing horizontal changes to their viewpoint that occur dur-ing a saccade compared to vertical or in-depth changes. We are currently extending these studies to measure SSD during actual head motions in immer-sive VR, allowing us to assess the contributions of the visual, vestibular and proprioceptive senses. The interaction between head motion, eye movement and suppression of graphical updates during sac-cades can provide insight into designing better VR experiences.\n},\n\tauthor = {Keyvanara, M. and Allison, R. 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