Cognitive
functions at high altitude
V.M. Sharma, M.S. Malhotra & A.S. Baskaran |
changes
in immediate memory for objects, sorting efficiency, perceptual speed,
efficiency of routine mental work, and concentration resulting from
1, 10, 13, 18 and 24 mon, of stay at an altitude of 4,000 m were
determined in the case of 25 healthy male subjects. Sea-level performance
after return from altitude was also recorded. Immediate memory remained
unchanged at altitude. Concentration was the only function which,
after recording a decline within the first month, continued to operate
at the lowered level throughout the stay. Efficiency of remaining
cognitive functions deteriorated during the first month of altitude
exposure but recovered thereafter possibly due to acclimatization.
Return sea-level scores were pretty close to original baseline levels.
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