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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 results from grip strength. (A) Right hand for divers, (B) Left hand for four divers, (C) Left and right hand on average, respectively.
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Figure 5: The results from grip strength. (A) Right hand for divers, (B) Left hand for four divers, (C) Left and right hand on average, respectively.

Mentions: The right hand (Figure 5A) and left hand (Figure 5B) grip strength also showed individual variability (ranged 74.24%∼113.04% of baseline). Both left-hand and right-hand grip strength of diver B were associated with the depth, which declined as compression processed and restored during decompression. While, slight impairment was detected for diver D. Interestingly, left-hand grip strength of diver C was even higher than baseline. Furthermore, the best performances of right-hand grip strength for diver A and C were observed at the depth of 480 m, as well as best right-hand performance for diver D (110.4, 104.2, and 109.3% respectively, when compared to baseline).


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 results from grip strength. (A) Right hand for divers, (B) Left hand for four divers, (C) Left and right hand on average, respectively.
© Copyright Policy
Related In: Results  -  Collection

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

Figure 5: The results from grip strength. (A) Right hand for divers, (B) Left hand for four divers, (C) Left and right hand on average, respectively.
Mentions: The right hand (Figure 5A) and left hand (Figure 5B) grip strength also showed individual variability (ranged 74.24%∼113.04% of baseline). Both left-hand and right-hand grip strength of diver B were associated with the depth, which declined as compression processed and restored during decompression. While, slight impairment was detected for diver D. Interestingly, left-hand grip strength of diver C was even higher than baseline. Furthermore, the best performances of right-hand grip strength for diver A and C were observed at the depth of 480 m, as well as best right-hand performance for diver D (110.4, 104.2, and 109.3% respectively, when compared to baseline).

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