Severe niacin-deficiency fatigues the thalamus (the brain's switchboard that regulates sleep/wake cycles). The thalamus interprets the 5 senses. A fatigued thalamus will switch a wakeful person to sleep mode. The sleep mode is the dream mode and dreams are surreal. An awake person functioning in a dream/surreal mode (the mode by which sleep-walking is possible) will experience audio, visual, olfactory & tactile hallucinations. The intellectual Dr. Sophia Yin needed niacin (vitamin B3) in greater quantities, as the brightest among us are more susceptible to insomnia which leads to melancholia. Melancholics are "treated" with tranquilizers & stimulants that don't address the root cause of psychosis: a sleep-deprived thalamus. Research Dr. Abram Hoffer.
--------------------------------------------------------------- By Robert D. Dávila - bdavila@sacbee.com Dr. Sophia Yin, a veterinarian and internationally recognized pioneer in the field of animal behavior as it relates to training pets, died Sept. 28, 2014 of suicide at her Davis home, according to the Yolo County coroner’s office. She was 48.