On reducing the somatogravic illusion with hmd conveyed visual flow

2006 ◽  
Author(s):  
Lars Eriksson ◽  
Arne Tribukait ◽  
Claes von Hofsten ◽  
Ola Eiken
Keyword(s):  
Visual Flow ◽  
Somatogravic Illusion

Visual Flow Scene Effects on the Somatogravic Illusion in Non-Pilots

2008 ◽  
Vol 79 (9) ◽  
pp. 860-866 ◽  
Author(s):  
Lars Eriksson ◽  
Claes von Hofsten ◽  
Arne Tribukait ◽  
Ola Eiken ◽  
Peter Andersson ◽  
...  
Keyword(s):  
Visual Flow ◽  
Somatogravic Illusion

On Reducing the Somatogravic Illusion with Hmd Conveyed Visual Flow

2006 ◽  
Vol 50 (16) ◽  
pp. 1599-1603
Author(s):  
Lars Eriksson ◽  
Arne Tribukait ◽  
Claes von Hofsten ◽  
Ola Eiken
Keyword(s):  
Visual Flow ◽  
Somatogravic Illusion

Directional effects of whole-body spinning and visual flow in virtual reality on vagal neuromodulation

2021 ◽  
pp. 1-16
Author(s):  
Alexander Yang Hui Xiang ◽  
Prashanna Khwaounjoo ◽  
Yusuf Ozgur Cakmak
Keyword(s):  
Heart Rate ◽  
Nervous System ◽  
Visual Stimulation ◽  
Pupil Diameter ◽  
Parasympathetic Activity ◽  
Whole Body ◽  
Vagal Activity ◽  
Eyes Closed ◽  
Visual Flow ◽  
Visual Interactions

BACKGROUND: Neural circuits allow whole-body yaw rotation to modulate vagal parasympathetic activity, which alters beat-to-beat variation in heart rate. The overall output of spinning direction, as well as vestibular-visual interactions on vagal activity still needs to be investigated. OBJECTIVE: This study investigated direction-dependent effects of visual and natural vestibular stimulation on two autonomic responses: heart rate variability (HRV) and pupil diameter. METHODS: Healthy human male subjects (n = 27) underwent constant whole-body yaw rotation with eyes open and closed in the clockwise (CW) and anticlockwise (ACW) directions, at 90°/s for two minutes. Subjects also viewed the same spinning environments on video in a VR headset. RESULTS: CW spinning significantly decreased parasympathetic vagal activity in all conditions (CW open p = 0.0048, CW closed p = 0.0151, CW VR p = 0.0019,), but not ACW spinning (ACW open p = 0.2068, ACW closed p = 0.7755, ACW VR p = 0.1775,) as indicated by an HRV metric, the root mean square of successive RR interval differences (RMSSD). There were no direction-dependent effects of constant spinning on sympathetic activity inferred through the HRV metrics, stress index (SI), sympathetic nervous system index (SNS index) and pupil diameter. Neuroplasticity in the CW eyes closed and CW VR conditions post stimulation was observed. CONCLUSIONS: Only one direction of yaw spinning, and visual flow caused vagal nerve neuromodulation and neuroplasticity, resulting in an inhibition of parasympathetic activity on the heart, to the same extent in either vestibular or visual stimulation. These results indicate that visual flow in VR can be used as a non-electrical method for vagus nerve inhibition without the need for body motion in the treatment of disorders with vagal overactivity. The findings are also important for VR and spinning chair based autonomic nervous system modulation protocols, and the effects of motion integrated VR.

scholarly journals Investigation into the formation, blockage and dissociation of cyclopentane hydrate in a visual flow loop

Fuel ◽  
2022 ◽  
Vol 307 ◽  
pp. 121730
Author(s):  
Zhiming Liu ◽  
Yuxing Li ◽  
Wuchang Wang ◽  
Guangchun Song ◽  
Yuanxing Ning ◽  
...  
Keyword(s):  
Flow Loop ◽  
Visual Flow

scholarly journals The somatogravic illusion during centrifugation: sex differences

2018 ◽  
Vol 9 ◽  
Author(s):  
Rainer Herpers ◽  
Laurence Harris ◽  
Meaghan McManus ◽  
Thomas Hofhammer ◽  
Alexandra Noppe ◽  
...  
Keyword(s):  
Sex Differences ◽  
Somatogravic Illusion
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