Visual Vigilance Performance and Standing Posture at Sea

Yu, Yifeng; Yank, Jane Redfield; Katsumata, Yasunobu; Villard, Sébastien; Kennedy, Robert S.; Stoffregen, Thomas A.

doi:10.3357/asem.2638.2010

Cited by 25 publications

(40 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On land, the variability of body position is reduced during performance of demanding visual tasks, such as reading, relative to sway during performance of less demanding visual tasks Stoffregen et al, 2000). Testing experienced maritime crewmembers at sea and Yu et al (2010) confirmed that the positional variability of body sway was reduced during performance of more demanding visual tasks at sea, relative to sway during performance of less demanding visual tasks. Accordingly, we predicted that the variability of body sway would be reduced during performance of more demanding visual tasks on land and at sea.…”

Section: Factors That Influence Standing Body Swaymentioning

confidence: 58%

“…This finding suggests that tuning of body sway to stance width at sea, such as was observed in the present study (cf. Yu et al, 2010;Yu et al, in press) may be related to the risk of seasickness. The tuning would, presumably, be less skillful for novices, which could lead to instability when stance width was mismatched with ship motion or with body orientation relative Downloaded by [University of South Florida] at 16:56 03 November 2014 to the ship (Stoffregen, Chen, Yu, & Villard, 2009).…”

Section: Resultsmentioning

confidence: 94%

“…In previous studies Yu et al, 2010; in press), we measured the positional variability of the center of pressure, and we tested participants only at sea. In the present study, we compared postural activity at sea and on land.…”

Section: Comparison Of Postural Activity On Land and At Seamentioning

confidence: 99%

“…We have found similar effects at sea. In mild seas, and Yu et al (2010) measured standing body sway when stance width was fixed at 5 cm, 17 cm, or 30 cm. Stance width was found to influence both the variability of postural activity and its dynamics.…”

Section: Factors That Influence Standing Body Swaymentioning

confidence: 99%

See 3 more Smart Citations

Standing Posture on Land and at Sea

Stoffregen

Villard

Chen

et al. 2011

Ecological Psychology

Self Cite

View full text Add to dashboard Cite

Section: Factors That Influence Standing Body Swaymentioning

confidence: 58%

Section: Resultsmentioning

confidence: 94%

Section: Comparison Of Postural Activity On Land and At Seamentioning

confidence: 99%

Section: Factors That Influence Standing Body Swaymentioning

confidence: 99%

See 2 more Smart Citations

Standing Posture on Land and at Sea

Stoffregen

Villard

Chen

et al. 2011

Ecological Psychology

Self Cite

View full text Add to dashboard Cite

“…We have documented relationships between postural activity and visual tasks in mild sea states ( 23,26 ). The present study was conducted on a ship at sea during rough weather conditions.…”

mentioning

confidence: 99%

Postural Activity and Visual Vigilance Performance During Rough Seas

Yank

Villard

et al. 2010

aviat space environ med

Self Cite

View full text Add to dashboard Cite

show abstract

Weightlessness alters up/down asymmetries in the perception of self-motion

et al. 2013

View full text Add to dashboard Cite

In the present study, we investigated the effect of weightlessness on the ability to perceive and remember self-motion when passing through virtual 3D tunnels that curve in different direction (up, down, left, right). We asked cosmonaut subjects to perform the experiment before, during and after long-duration space flight aboard the International Space Station (ISS), and we manipulated vestibular versus haptic cues by having subjects perform the task either in a rigidly fixed posture with respect to the space station or during free-floating, in weightlessness. Subjects were driven passively at constant speed through the virtual 3D tunnels containing a single turn in the middle of a linear segment, either in pitch or in yaw, in increments of 12.5°. After exiting each tunnel, subjects were asked to report their perception of the turn's angular magnitude by adjusting, with a trackball, the angular bend in a rod symbolizing the outside view of the tunnel. We demonstrate that the strong asymmetry between downward and upward pitch turns observed on Earth showed an immediate and significant reduction when free-floating in weightlessness and a delayed reduction when the cosmonauts were firmly in contact with the floor of the station. These effects of weightlessness on the early processing stages (vestibular and optokinetics) that underlie the perception of self-motion did not stem from a change in alertness or any other uncontrolled factor in the ISS, as evidenced by the fact that weightlessness had no effect on the perception of yaw turns. That the effects on the perception of pitch may be partially overcome by haptic cues reflects the fusion of multisensory cues and top-down influences on visual perception.

show abstract

Visual Vigilance Performance and Standing Posture at Sea

Abstract: In mild seas, variations in stance width modulate standing posture and influence the performance of computer-based visual tasks.

Cited by 25 publications

References 17 publications

Standing Posture on Land and at Sea

Standing Posture on Land and at Sea

Postural Activity and Visual Vigilance Performance During Rough Seas

Weightlessness alters up/down asymmetries in the perception of self-motion

Contact Info

Product

Resources

About