Which effect is NOT typically associated with an oxygen-deficient atmosphere?

An oxygen-deficient atmosphere generally leads to several physiological and cognitive deficits due to the lack of sufficient oxygen for proper brain and body function. In such an environment, individuals often experience impaired judgment, coordination lapses, and an increased respiratory rate as the body attempts to compensate for the lack of oxygen.

Enhanced cognitive function, on the other hand, is not a characteristic of an oxygen-deficient atmosphere. In fact, cognitive functions typically decline as oxygen levels decrease, leading to confusion, misjudgment, and slower processing speeds. The brain requires an adequate supply of oxygen to function optimally, and when it is deprived, cognitive impairments arise rather than enhancements. Hence, the option indicating enhanced cognitive function is the correct answer, as it stands in direct contrast to the expected effects of an oxygen-deficient environment.