Can fatigue or sleep deprivation induce altered states?
Short Answer
Sleep deprivation and extreme fatigue can trigger altered states by disrupting normal brain function, creating hypnagogic hallucinations, microsleeps, and cognitive distortions similar to psychedelic experiences.
Why This Matters
Fatigue alters consciousness because sleep loss impairs the prefrontal cortex while increasing activity in emotional and sensory processing regions. This neurochemical imbalance results in weakened reality testing, enhanced pattern recognition errors, and spontaneous dream-like intrusions into waking awareness. The brain begins incorporating REM sleep elements during wake periods, leading to visual distortions, time perception changes, and heightened suggestibility that mirror other altered states.
Where This Changes
The intensity varies with duration and degree of sleep debt, individual tolerance, and environmental factors. Most people experience mild effects after 24 hours awake, while severe alterations typically emerge after 48-72 hours of sleep deprivation.