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Updated: Aug 8, 2025

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
Published on: May 23, 2011
The effect of colour environments on visual tracking and visual strain during short-term simulation of three gravity
Ao Jiang1, Weihao Fang2, Jiacheng Liu2
1Ningbo Innovation Centre, Zhejiang University, China; Dyson School of Design Engineering, Imperial College London, UK; ILEWG EuroMoonMars at ESTEC European Space Agency, Netherlands; Euro Space Hub, Netherlands.
Abstract:
This study investigated the effects of nine colour environments on visual tracking accuracy and visual strain during normal sitting (SP), -12° head-down bed (HD) and 9.6° head-up tilt bed (HU). In a standard posture change laboratory study, fifty-four participants performed visual tracking tasks in nine colour environments while in the three postures. Visual strain was measured by means of a questionnaire. The results showed that in all colour environments, the -12° head-down bed rest posture significantly affected visual tracking accuracy and visual strain. During the three postures, the participants' visual tracking accuracy in the cyan environment was significantly higher than that in other colour environments, and their visual strain was the lowest. Overall, the study adds to our understanding of how environmental and postural factors impact on visual tracking and visual strain.

