What does the term "nitrogen narcosis" refer to?

Nitrogen narcosis is a condition that occurs when divers breathe nitrogen at depths typically greater than 30 meters (about 100 feet). At these greater depths, the partial pressure of nitrogen increases, which can lead to an anesthetic effect on the central nervous system. This affects cognitive function, leading to symptoms such as impaired judgment, decreased coordination, and a general feeling of intoxication.

The ability to make sound decisions becomes compromised, which can be particularly dangerous for divers since they may not recognize that their cognitive function is impaired. It's important for divers to be aware of this phenomenon and to avoid deep dives if they are not trained or equipped to handle the psychological effects of nitrogen narcosis responsibly.

While other options touch on diving-related topics, they do not accurately represent the definition of nitrogen narcosis as it is understood in diving medicine and safety. Understanding nitrogen narcosis is crucial for diver safety and managing deep dives effectively.