inert gas narcosis symptoms - Andy Davis Sidemount Technical Wreck Diving Blog

Gradient Factor Comparison: 60m Trimix Case-Study

Comparing three gradient factor settings on a 60m trimix dive plan to discuss off-gassing efficiency and DCS risk.

Why Do Divers Use Helium?

Find out the three reasons why divers use helium in their breathing gas to increase diving safety. Scuba agencies have differing policies on training for helium diving.

Nitrogen Narcosis: Why It Is Hard to Know You Are Narked

How do scuba divers perceive nitrogen narcosis? Is it possible to gauge your susceptibility to narcosis & make sound judgments to manage it?

Does Nitrogen Narcosis Impairment Persist?

nitrogen narcosis impairment critical-flicker-frequency-fusion-study

A new study on nitrogen narcosis challenges the long held presumption that nitrogen narcosis impairment dissipates immediately on ascent from depth.