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Mental abilities and performance efficacy under a simulated 480-m helium-oxygen saturation diving.

Hou G, Zhang Y, Zhao N, Chen R, Xiao W, Yu H, Wang J, Yuan TF - Front Psychol (2015)

Bottom Line: Stress in extreme environment severely disrupts human physiology and mental abilities.The present study investigated the cognition and performance efficacy of four divers during a simulated 480 meters helium-oxygen saturation diving.We conclude that the human cognition and performance efficacy are significantly affected during deep water saturation diving.

View Article: PubMed Central - PubMed

Affiliation: Institute of Cognitive Neuroscience and Department of Psychology, Zhejiang Sci-Tech University Hangzhou, China.

ABSTRACT
Stress in extreme environment severely disrupts human physiology and mental abilities. The present study investigated the cognition and performance efficacy of four divers during a simulated 480 meters helium-oxygen saturation diving. We analyzed the spatial memory, 2D/3D mental rotation functioning, grip strength, and hand-eye coordination ability in four divers during the 0-480 m compression and decompression processes of the simulated diving. The results showed that except for its mild decrease on grip strength, the high atmosphere pressure condition significantly impaired the hand-eye coordination (especially above 300 m), the reaction time and correct rate of mental rotation, as well as the spatial memory (especially as 410 m), showing high individual variability. We conclude that the human cognition and performance efficacy are significantly affected during deep water saturation diving.

No MeSH data available.


Related in: MedlinePlus

The test materials and the compression procedure. (A) 2D mental rotation, (B) 3D mental rotation, (C) Spatial memory test, (D) The compression and depression procedures.
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Figure 1: The test materials and the compression procedure. (A) 2D mental rotation, (B) 3D mental rotation, (C) Spatial memory test, (D) The compression and depression procedures.

Mentions: For 2D mental rotation test, two “R” characters rotated at 45°/90°/135°/180° (five questions for each degree, 20 questions in total) were used (Figure 1A). The subjects were asked to judge whether the two “R” characters were exactly the same or in mirror image. The reaction time and correct rate were recorded.


Mental abilities and performance efficacy under a simulated 480-m helium-oxygen saturation diving.

Hou G, Zhang Y, Zhao N, Chen R, Xiao W, Yu H, Wang J, Yuan TF - Front Psychol (2015)

The test materials and the compression procedure. (A) 2D mental rotation, (B) 3D mental rotation, (C) Spatial memory test, (D) The compression and depression procedures.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4496554&req=5

Figure 1: The test materials and the compression procedure. (A) 2D mental rotation, (B) 3D mental rotation, (C) Spatial memory test, (D) The compression and depression procedures.
Mentions: For 2D mental rotation test, two “R” characters rotated at 45°/90°/135°/180° (five questions for each degree, 20 questions in total) were used (Figure 1A). The subjects were asked to judge whether the two “R” characters were exactly the same or in mirror image. The reaction time and correct rate were recorded.

Bottom Line: Stress in extreme environment severely disrupts human physiology and mental abilities.The present study investigated the cognition and performance efficacy of four divers during a simulated 480 meters helium-oxygen saturation diving.We conclude that the human cognition and performance efficacy are significantly affected during deep water saturation diving.

View Article: PubMed Central - PubMed

Affiliation: Institute of Cognitive Neuroscience and Department of Psychology, Zhejiang Sci-Tech University Hangzhou, China.

ABSTRACT
Stress in extreme environment severely disrupts human physiology and mental abilities. The present study investigated the cognition and performance efficacy of four divers during a simulated 480 meters helium-oxygen saturation diving. We analyzed the spatial memory, 2D/3D mental rotation functioning, grip strength, and hand-eye coordination ability in four divers during the 0-480 m compression and decompression processes of the simulated diving. The results showed that except for its mild decrease on grip strength, the high atmosphere pressure condition significantly impaired the hand-eye coordination (especially above 300 m), the reaction time and correct rate of mental rotation, as well as the spatial memory (especially as 410 m), showing high individual variability. We conclude that the human cognition and performance efficacy are significantly affected during deep water saturation diving.

No MeSH data available.


Related in: MedlinePlus