Resumen de The sensed-presence effect.
The article examines how the human brain senses someone is present even though they are not really there. The author cites the book "The Third Man Factor," by John Geiger which documents the effect of a sensed-presence among mountain climbers and solo sailors. Topics include an overview of how sleep deprivation can be a factor in the sensed-presence effect and several events that are happening in the brain to cause the effect, such as oxygen deprivation or exhaustion.
