The Reason For The Door Opener Effect

Psychologists believe that walking through a door and entering another room creates a mental blockage in the brain, meaning that walking through open doors resets memory to make room for a new episode to emerge. 

This is generally referred to as the doorway effect.

Walking through a doorway can make you forget. You'll walk from one room to another with a clear idea of whatever you need to do, but when you get there, you can't remember what you wanted to do. Studies show that a doorway seems to insert a mental divider into m...

• One theory is that dreaming helps with sleep's memory-processing function. During sleep, the brain sorts through information gathered during the day, then decides what to keep and what connections to make between new information.
• Another theory is that drea...