What is the phenomenon where divers experience altered states of consciousness at depths?

Nitrogen narcosis is a condition experienced by divers as they descend to greater depths, typically starting around 30 meters (100 feet). It is caused by the increased partial pressure of nitrogen in the breathing gas, which can produce effects similar to alcohol intoxication. Divers may experience an altered state of consciousness, including feelings of euphoria, decreased coordination, impaired judgment, and even hallucinations.

The depth at which nitrogen narcosis occurs varies among individuals, with some being more susceptible than others. The increase in nitrogen levels in the bloodstream affects the central nervous system, leading to the characteristic cognitive and sensory alterations. Awareness of nitrogen narcosis is crucial for divers because it can compromise safety and decision-making under the pressure of deeper dives.

While decompression sickness, cognitive impairment, and hypoxia are related to diving, they do not specifically describe the phenomenon of altered consciousness due to nitrogen. Decompression sickness refers to physical ailments resulting from bubbles forming in the body as a diver ascends too quickly. Cognitive impairment can occur due to various factors but does not specifically address the unique effects caused by nitrogen at depths. Hypoxia is related to a lack of sufficient oxygen, which can lead to confusion and other symptoms, but it is distinct from the effects of