scholarly journals The effects of visual information on postural stability in dynamic motion environments

2010 ◽  
Vol 3 (9) ◽  
pp. 547-547
Author(s):  
M. B. Flanagan ◽  
J. G. May ◽  
T. G. Dobie
Keyword(s):  
Visual Information ◽  
Postural Stability ◽  
Dynamic Motion

scholarly journals Visual Influence in Dynamic Motion Environments: Postural Stability and Motion Sickness

2004 ◽  
Vol 4 (8) ◽  
pp. 800-800
Author(s):  
M. B. Flanagan ◽  
J. G. May ◽  
T. G. Dobie
Keyword(s):  
Motion Sickness ◽  
Postural Stability ◽  
Dynamic Motion ◽  
Visual Influence

scholarly journals Postural instability in subjects with parkinson’s disease undergoing different sensory pitfalls

2017 ◽  
Vol 18 (4) ◽  
Author(s):  
Thaís Cardoso Da Silva ◽  
Lilian Assunção Felippe ◽  
Rodrigo Luiz Carregaro ◽  
Gustavo Christofoletti
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Visual Information ◽  
Postural Stability ◽  
Body Position ◽  
Postural Instability ◽  
Sensory Stimuli ◽  
Eyes Closed ◽  
The Impact ◽  
Anterior Posterior

AbstractPurpose. Previous research has reported postural instability in subjects with Parkinson’s disease (PD). However, there are still doubts about the effect of sensory stimuli on one’s balance. In this study, we further investigated the stabilometric measures of individuals with PD, analysing the impact of different sensory stimuli on the outcomes. Methods. The total of 26 participants (13 with PD and 13 matched control peers) were submitted to 8 sensorimotor dynamics differing in relation to support base (30 cm vs. 10 cm, feet in parallel vs. feet in semi-tandem position), contact surface (foam vs. no foam), and visual conditions (eyes open vs. eyes closed). The measures used to assess one’s balance were body position in space, area of support base, and velocity of postural control. The variables involved the anterior-posterior and the mediolateral axes. Participants with PD were evaluated during the off medication state. Mann-Whitney U test and Friedman’s test were applied to carry out inter- and intra-group comparisons. Significance was set at 5%. Results. Cross-sectional analyses illustrated that tasks with sensory pitfalls impacted postural stability to a larger extent in PD subjects. The differences were found in anterior-posterior body position, area of support base, anterior-posterior velocity, and mediolateral velocity. Complementary analyses confirmed considerable instability on balance when support bases were small and visual information was absent (p < 0.05). Conclusions. The current results confirm worse postural stability response in subjects with PD and highlight that the interference of the sensory pitfalls is notable when individuals are off medication.

Do Athletes With a Reconstructed Anterior Cruciate Ligament Respond Differently Than Controls to Visual Challenges When Dynamic Postural Stability is Assessed?

2021 ◽  
Vol 37 (6) ◽  
pp. 611-618
Author(s):  
Nathan J. Robey ◽  
Kurt O. Buchholz ◽  
Shane P. Murphy ◽  
Jeremy D. Smith ◽  
Gary D. Heise
Keyword(s):  
Anterior Cruciate Ligament ◽  
Visual Information ◽  
Postural Stability ◽  
Cruciate Ligament ◽  
Stability Index ◽  
Acl Injury ◽  
Increased Risk ◽  
Eyes Open ◽  
Anterior Cruciate ◽  
Dynamic Postural Stability

Individuals returning to sport after anterior cruciate ligament reconstruction (ACLR) are at an increased risk of sustaining a subsequent ACL injury. It is suspected that increased reliance on visual information to maintain stability may factor into this increased risk. The connection between visual reliance and ACLR is not well understood during dynamic tasks. Examination of the proposed visual reliance may help improve returning to sport standards and reduce subsequent ACL injury risk. A total of 12 ACLR individuals and 12 age- and sex-matched controls completed several trials of a normalized dynamic hop task on both limbs under 3 different visual conditions (eyes open, low visual disruption, and high visual disruption). Stroboscopic eyewear were worn by each participant to disrupt vision during testing. Ground reaction force data were collected during landing. Dynamic postural stability was assessed using 2 separate calculations: dynamic postural stability index and time to stability. No significant statistical interactions or group differences were observed. The stroboscopic eyewear did increase the medial–lateral stability index from the eyes open to the low visual disruption condition (P < .05). These findings suggest that ACLR individuals do not rely on visual information more than controls during a dynamic hop task.

Influence of both cutaneous input from the foot soles and visual information on the control of postural stability in dyslexic children

2017 ◽  
Vol 56 ◽  
pp. 141-146 ◽  
Author(s):  
Nathalie Goulème ◽  
Philippe Villeneuve ◽  
Christophe-Loïc Gérard ◽  
Maria Pia Bucci
Keyword(s):  
Visual Information ◽  
Postural Stability

THE EFFECTIVENESS OF VISUAL INFORMATION IN MAINTAINING THE POSTURAL STABILITY AFTER THE MAXIMAL EXERCISE IN WRESTLERS

2015 ◽  
Vol 20 (3) ◽  
pp. 5-11 ◽  
Author(s):  
Andrey Melnikov ◽  
◽  
Roman Nikolaev ◽  
Ekaterina Sibarnova ◽  
◽  
...  
Keyword(s):  
Visual Information ◽  
Postural Stability ◽  
Maximal Exercise

The Perception of an Optical Flow Projected on the Ground Surface

Perception ◽  
1988 ◽  
Vol 17 (5) ◽  
pp. 633-645 ◽  
Author(s):  
Michelangelo Flückiger ◽  
Bernard Baumberger
Keyword(s):  
Visual Information ◽  
Postural Stability ◽  
Ground Surface ◽  
Body Sway ◽  
Centre Of Gravity ◽  
Postural Responses ◽  
Outdoor Setting ◽  
Linear Vection ◽  
Ecological Specificity

In most experiments in which the importance of visual control on postural stability is studied, optical stimuli attached to vertical surfaces are used. Analyses of long-term standing readjustments generally involve back-and-forth movements of a visual scene or its projection on vertical circular screens. In a natural environment, however, visual information is largely available from the ground. The aim of the experiment reported was to assess the effect of a flow pattern simulating an open outdoor setting on motion perception and postural control. Subjects were presented with an optical texture projected onto the ground. Periods of motionless texture alternated with equivalent durations of unidirectional flows. The change of position of the subject's centre of gravity over time was recorded on a force platform. Results show that the direction of body sway corresponded with that of texture motion. Important aftereffects, as shown in linear vection experiments, were also observed. However, the latency of postural responses was much shorter than with prolonged unidirectional flows produced in other locations of the visual environment. The hypothesis of an ecological specificity of the flows perceived on the ground during terrestrial displacements is discussed.

Investigating the Multimodal Nature of Human Communication

2009 ◽  
Vol 23 (2) ◽  
pp. 63-76 ◽  
Author(s):  
Silke Paulmann ◽  
Sarah Jessen ◽  
Sonja A. Kotz
Keyword(s):  
Visual Information ◽  
Empirical Studies ◽  
Physical Property ◽  
Event Related Potentials ◽  
Accurate Information ◽  
Human Communication ◽  
Channel Condition ◽  
Prosodic Cues ◽  
Early Processing ◽  
Related Potentials

The multimodal nature of human communication has been well established. Yet few empirical studies have systematically examined the widely held belief that this form of perception is facilitated in comparison to unimodal or bimodal perception. In the current experiment we first explored the processing of unimodally presented facial expressions. Furthermore, auditory (prosodic and/or lexical-semantic) information was presented together with the visual information to investigate the processing of bimodal (facial and prosodic cues) and multimodal (facial, lexic, and prosodic cues) human communication. Participants engaged in an identity identification task, while event-related potentials (ERPs) were being recorded to examine early processing mechanisms as reflected in the P200 and N300 component. While the former component has repeatedly been linked to physical property stimulus processing, the latter has been linked to more evaluative “meaning-related” processing. A direct relationship between P200 and N300 amplitude and the number of information channels present was found. The multimodal-channel condition elicited the smallest amplitude in the P200 and N300 components, followed by an increased amplitude in each component for the bimodal-channel condition. The largest amplitude was observed for the unimodal condition. These data suggest that multimodal information induces clear facilitation in comparison to unimodal or bimodal information. The advantage of multimodal perception as reflected in the P200 and N300 components may thus reflect one of the mechanisms allowing for fast and accurate information processing in human communication.

Sign in / Sign up

Export Citation Format

Share Document