Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

a) Outline and evaluate one neurobiological theory of dreaming One neurobiological theory of dreaming is the activation-synthesis hypothesis, which suggests that the brain stem generates random signals as it does when you're awake due to internal and external stimuli (Hobson and McCarley, 1977). However, unlike when you're awake, during sleep there is a sensory and motor blockade i.e. no input from senses and no control of muscles due to paralysis so there is a lack of internal and external stimuli but EEG recordings show that the cortex is still active in REM sleep. The only muscles that are allowed to move are those controlling the eyes, hence REM sleep is called rapid eye movement sleep. Dreams are supposedly created during the synthesis part of this process. When the activation (the random signals) reaches the frontal cortex, it essentially does the same job as when we are awake. It tries to make...

To see the full version of this document, and 145,348 others