The Nightwalker

The case was clear-cut: the cheating wife admits her betrayal. Her husband loses his mind. A crime of passion. Then, to end it all, he hangs himself. It was the oldest story in the world.

In this brief phase the brain stretches its feelers into the world outside the dream, like a submarine does its periscope, to check if it would be advisable to change the state of consciousness, for example if the sleeping person is in danger.

o as not to be woken by each and every noise, the brain restricts the intensity of external stimuli.