Results 41 to 50 of about 28,103 (239)

Effects of visually simulated roll motion on vection and postural stabilization

Journal of NeuroEngineering and Rehabilitation, 2007
Background Visual motion often provokes vection (the induced perception of self-motion) and postural movement. Postural movement is known to increase during vection, suggesting the same visual motion signal underlies vection and postural control. However,
Ujike Hiroyasu, Tanahashi Shigehito, Kozawa Ryo, Ukai Kazuhiko   +3 more
doaj   +1 more source

Response of the West African Monsoon to the Madden–Julian Oscillation [PDF]

, 2009
Observations show that rainfall over West Africa is influenced by the Madden-Julian Oscillation (MJO). A number of mechanisms have been suggested: 1) forcing by equatorial waves; 2) enhanced monsoon moisture supply; and 3) increased African easterly wave
Lavender, Sally L., Matthews, Adrian J.
core   +1 more source

Hunger Enhances Vertical Vection

Perception, 2012
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.
Seno, Takeharu, Ito, Hiroyuki, Sunaga, Shoji, Palmisano, Stephen   +3 more
openaire   +4 more sources

Vection depends on perceived surface properties [PDF]

Attention, Perception, & Psychophysics, 2016
Optic flow provides important information for the perception of self-motion and can be generated by both diffuse and specular reflectance. Previous self-motion research using virtual environments has primarily considered the properties of diffuse optic flow, but not of specular flow. We used graphical simulations to examine the extent to which visually
Kim, J, Khuu, S, Palmisano, S
openaire   +3 more sources

Surface qualities have little effect on vection strength

Frontiers in Psychology, 2014
We investigated the effects of different surface qualities of materials on vection strength. Previous studies have extensively examined the stimulus parameters for effective vection induction.
Masaki eOgawa, Chihiro eHiramatsu, Chihiro eHiramatsu, Takeharu eSeno, Takeharu eSeno, Takeharu eSeno   +5 more
doaj   +1 more source

Network changes in patients with phobic postural vertigo

Brain and Behavior, Volume 10, Issue 6, June 2020., 2020
Individuals with phobic postural vertigo (PPV) display vestibular symptoms in the absence of a structural or organic origin. For this reason, functional brain mechanisms have been implicated in these disorders. Here, functional network organisation was investigated in PPV patients during functional magnetic resonance imaging with a visual motion ...
Judita Huber, Virginia L. Flanagin, Pauline Popp, Peter zu Eulenburg, Marianne Dieterich   +4 more
wiley   +1 more source

Shift in lateralization during illusory self‐motion: EEG responses to visual flicker at 10 Hz and frequency‐specific modulation by tACS

European Journal of Neuroscience, Volume 51, Issue 7, Page 1657-1675, April 2020., 2020
We found hemispheric lateralization in the EEG alpha‐band during illusory self‐movement (vection) induced by large optic flow, supporting the idea of lateralization of visual–vestibular function. Using a novel artefact removal strategy for combined tACS‐EEG, we show that frequency‐matched sawtooth wave tACS significantly enhances SSVEP amplitude; tACS ...
James Dowsett, Christoph S. Herrmann, Marianne Dieterich, Paul C.J. Taylor   +3 more
wiley   +1 more source

Visual Field Dependence Is Associated with Reduced Postural Sway, Dizziness and Falls in Older People Attending a Falls Clinic. [PDF]

, 2016
Moving visual fields can have strong destabilising effects on balance, particularly when visually perceived motion does not correspond to postural movements.
Barr, Christopher, Crotty, Maria, Lord, S R, McLoughlin, JV, Sturnieks, D L, van den Berg, Maayken   +5 more
core   +1 more source

Neural bases of self‐ and object‐motion in a naturalistic vision

Human Brain Mapping, Volume 41, Issue 4, Page 1084-1111, March 2020., 2020
Abstract To plan movements toward objects our brain must recognize whether retinal displacement is due to self‐motion and/or to object‐motion. Here, we aimed to test whether motion areas are able to segregate these types of motion. We combined an event‐related functional magnetic resonance imaging experiment, brain mapping techniques, and wide‐field ...
Sabrina Pitzalis, Chiara Serra, Valentina Sulpizio, Giorgia Committeri, Francesco de Pasquale, Patrizia Fattori, Claudio Galletti, Rosamaria Sepe, Gaspare Galati   +8 more
wiley   +1 more source

Influence of convective transport on tropospheric ozone and its precursors in a chemistry-climate model [PDF]

, 2005
The impact of convection on tropospheric O3 and its precursors has been examined in a coupled chemistry-climate model. There are two ways that convection affects O3. First, convection affects O3 by vertical mixing of O3 itself.
Collins, W. J., Doherty, R. M., Sanderson, M. G., Stevenson, D. S.   +3 more
core   +3 more sources