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Multisensory contribution in visuospatial orientation: an interaction between neck and trunk proprioception
(2021)
Jason McCarthy
;
CASTRO ABARCA, PATRICIA BERNARDITA
;
Rachael Cottier
;
Joseph Buttell
;
Qadeer Arshad
<jats:title>Abstract</jats:title><jats:p>A coherent perception of spatial orientation is key in maintaining postural control. To achieve this the brain must access sensory inputs encoding both the body and the head position and integrate them with incoming visual information. Here we isolated the contribution of proprioception to verticality perception and further investigated whether changing the body position without moving the head can modulate visual dependence—the extent to which an individual relies on visual cues for spatial orientation. Spatial orientation was measured in ten healthy individuals [6 female; 25–47 years (SD 7.8 years)] using a virtual reality based subjective visual vertical (SVV) task. Individuals aligned an arrow to their perceived gravitational vertical, initially against a static black background (10 trials), and then in other conditions with clockwise and counterclockwise background rotations (each 10 trials). In all conditions, subjects were seated first in the upright position, then with trunk tilted 20° to the right, followed by 20° to the left while the head was always aligned vertically. The SVV error was modulated by the trunk position, and it was greater when the trunk was tilted to the left compared to right or upright trunk positions (<jats:italic>p</jats:italic> < 0.001). Likewise, background rotation had an effect on SVV errors as these were greater with counterclockwise visual rotation compared to static background and clockwise roll motion (<jats:italic>p</jats:italic> < 0.001). Our results show that the interaction between neck and trunk proprioception can modulate how visual inputs affect spatial orientation.</jats:p>
5Scopus© Citations 9
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Visuospatial orientation: Differential effects of head and body positions
(2022)
CASTRO ABARCA, PATRICIA BERNARDITA
;
Shahvaiz Hussain
;
Omer G. Mohamed
;
Diego Kaski
;
Qadeer Arshad
8Scopus© Citations 3
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Priming overconfidence in belief systems reveals negative return on postural control mechanisms
(2022)
CASTRO ABARCA, PATRICIA BERNARDITA
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Efstratia Papoutselou
;
Sami Mahmoud
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Shahvaiz Hussain
;
Constanza Fuentealba Bassaletti
3Scopus© Citations 9
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Body sway during postural perturbations is mediated by the degree of vestibulo-cortical dominance
(2019)
CASTRO ABARCA, PATRICIA BERNARDITA
;
Diego Kaski
;
Hussein Al-Fazly
;
Deniz Ak
;
Liam Oktay
28Scopus© Citations 3
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Subjective stability perception is related to postural anxiety in older subjects
(2019)
CASTRO ABARCA, PATRICIA BERNARDITA
;
Diego Kaski
;
Marco Schieppati
;
Michael Furman
;
Qadeer Arshad
Scopus© Citations 25 3

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