Simulated self-motion in a visual gravity field: Sensitivity to vertical and horizontal heading in the human brain

Indovina, Iole; Maffei, Vincenzo; Pauwels, Karl; Macaluso, Emiliano; Orban, Guy A.; Lacquaniti, Francesco

doi:10.1016/j.neuroimage.2013.01.005

Cited by 65 publications

(94 citation statements)

References 72 publications

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“…This time shift indicates an influence of the orientation relative to visual gravity on response timing that could be attributed to the anticipation of the effects of visual gravity on self-motion along the vertical, but not the horizontal orientation. Finally, precision in TTP estimates was higher during vertical fall than when traveling at constant speed along the vertical orientation, consistent 1 3 network of areas including the posterior-insula and the temporo-parietal junction (Indovina et al 2013, Maffei et al 2010Miller et al 2008;Bosco et al 2008).…”

Section: Introductionsupporting

confidence: 58%

“…However, a previous study that used the same rollercoaster visual stimuli (Indovina et al 2013) showed that participants did not attribute a bigger engaging value (sense of presence) to vertical with respect to horizontal accelerated motions. Here, in addition, we found no significant correlation between sense of presence and TTP difference among vertical and horizontal accelerated conditions.…”

Section: Vertical Versus Horizontal: Accelerated Self-motionmentioning

confidence: 77%

“…We visually simulated rollercoaster rides along the vertical and horizontal orientations with accelerated (1 g), decelerated (−1 g) and constant speed motion. A previous study (Indovina et al 2013) showed that these visual stimuli elicit comparable self-motion sensations across vertical and horizontal paths. In the present study, participants had to press a button at the time at which they thought the rollercoaster car would pass through a reference point ("Visible" protocol).…”

Section: Introductionmentioning

confidence: 88%

“…1) across a mountain landscape (www.nolimitscoast er.com, Mad Data, Joerg Henseler, Erkrath, Germany) on a first-person perspective (see Indovina et al 2013). AVI videos were displayed by means of Presentation 14.1 (Neurobehavioral Systems Inc., Albany, Canada), at 1024 × 768 pixels, 75 frames per second, 34 × 27 cm, 80 cm distance from the screen corresponding to 24° × 19° visual angle.…”

Section: Apparatus and Taskmentioning

confidence: 99%

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Anticipating the effects of visual gravity during simulated self-motion: estimates of time-to-passage along vertical and horizontal paths

2013

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By simulating self-motion on a virtual rollercoaster, we investigated whether acceleration cued by the optic flow affected the estimate of time-to-passage (TTP) to a target. In particular, we studied the role of a visual acceleration (1 g = 9.8 m/s(2)) simulating the effects of gravity in the scene, by manipulating motion law (accelerated or decelerated at 1 g, constant speed) and motion orientation (vertical, horizontal). Thus, 1-g-accelerated motion in the downward direction or decelerated motion in the upward direction was congruent with the effects of visual gravity. We found that acceleration (positive or negative) is taken into account but is overestimated in module in the calculation of TTP, independently of orientation. In addition, participants signaled TTP earlier when the rollercoaster accelerated downward at 1 g (as during free fall), with respect to when the same acceleration occurred along the horizontal orientation. This time shift indicates an influence of the orientation relative to visual gravity on response timing that could be attributed to the anticipation of the effects of visual gravity on self-motion along the vertical, but not the horizontal orientation. Finally, precision in TTP estimates was higher during vertical fall than when traveling at constant speed along the vertical orientation, consistent with a higher noise in TTP estimates when the motion violates gravity constraints

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Section: Introductionsupporting

confidence: 58%

Section: Vertical Versus Horizontal: Accelerated Self-motionmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 88%

Section: Apparatus and Taskmentioning

confidence: 99%

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Anticipating the effects of visual gravity during simulated self-motion: estimates of time-to-passage along vertical and horizontal paths

2013

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“…Previous studies found differences in the representation of downward versus horizontal self-motion (Barnett-Cowan et al 2012;Nesti et al 2014). Moreover, functional magnetic resonance imaging (fMRI) showed that vertical visual self-motion activates a cerebral network including the parieto-insular vestibular cortex (PIVC), inferior parietal cortex, intraparietal sulcus, and cerebellar vermis (Indovina et al 2013b), a network known to process both visual and vestibular signals in humans (Indovina et al 2005;Lopez and Blanke 2011). Electrophysiological studies in monkeys showed that multiple cortical and subcortical areas contain neurons with selective responses to both visual motion stimuli encountered during self-motion and inertial motion in darkness which activates vestibular receptors (DeAngelis and Angelaki 2012).…”

Section: Introductionmentioning

confidence: 99%

Sound-evoked vestibular stimulation affects the anticipation of gravity effects during visual self-motion

et al. 2015

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Humans anticipate the effects of gravity during visually simulated self-motion in the vertical direction. Here we report that an artificial vestibular stimulation consisting of short-tone bursts (STB) suppresses this anticipation. Participants pressed a button upon entering a tunnel during virtual-reality roller coaster rides in downward or forward directions. In different trials, we delivered STB, pulsed white noise (WN), or no sound (NO). In the control conditions (WN, NO), participants responded earlier during downward than forward motion irrespective of true kinematics, consistent with the a priori expectation that downward but not forward motion is accelerated by gravity. STB canceled the difference in response timing between the two directions, without affecting overall task performance. Thus, we argue that vestibular signals play a role in the anticipation of visible gravity effects during self-motion.

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Neuroticism modulates brain visuo-vestibular and anxiety systems during a virtual rollercoaster task

et al. 2016

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Different lines of research suggest that anxiety-related personality traits may influence the visual and vestibular control of balance, although the brain mechanisms underlying this effect remain unclear. To our knowledge, this is the first functional magnetic resonance imaging (fMRI) study that investigates how individual differences in neuroticism and introversion, two key personality traits linked to anxiety, modulate brain regional responses and functional connectivity patterns during a fMRI task simulating self-motion. Twenty-four healthy individuals with variable levels of neuroticism and introversion underwent fMRI while performing a virtual reality rollercoaster task that included two main types of trials: (1) trials simulating downward or upward self-motion (vertical motion), and (2) trials simulating self-motion in horizontal planes (horizontal motion). Regional brain activity and functional connectivity patterns when comparing vertical versus horizontal motion trials were correlated with personality traits of the Five Factor Model (i.e., neuroticism, extraversion-introversion, openness, agreeableness, and conscientiousness). When comparing vertical to horizontal motion trials, we found a positive correlation between neuroticism scores and regional activity in the left parieto-insular vestibular cortex (PIVC). For the same contrast, increased functional connectivity between the left PIVC and right amygdala was also detected as a function of higher neuroticism scores. Together, these findings provide new evidence that individual differences in personality traits linked to anxiety are significantly associated with changes in the activity and functional connectivity patterns within visuo-vestibular and anxiety-related systems during simulated vertical self-motion. Hum Brain Mapp 38:715-726, 2017. © 2016 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc.

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Simulated self-motion in a visual gravity field: Sensitivity to vertical and horizontal heading in the human brain

Cited by 65 publications

References 72 publications

Anticipating the effects of visual gravity during simulated self-motion: estimates of time-to-passage along vertical and horizontal paths

Anticipating the effects of visual gravity during simulated self-motion: estimates of time-to-passage along vertical and horizontal paths

Sound-evoked vestibular stimulation affects the anticipation of gravity effects during visual self-motion

Neuroticism modulates brain visuo-vestibular and anxiety systems during a virtual rollercoaster task

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