PSY290H5 Chapter Notes - Chapter 14: Non-Rapid Eye Movement Sleep, Sleep Deprivation, Freerunning
Document Summary
The dreams recalled from nrem sleep tend to be isolated experiences, while those associated with rem sleep tend to take the form of narratives. External stimuli can become incorporated into their dreams. Some people believe dreams last only an instant, but research suggests that dreams run on (cid:498)real time(cid:499) Penile erections have no correlation with dreams of sexual content. Sleeptalking (somniloquy) has no special association with rem sleep; can occur during any stage but often occurs during a transition to wakefulness. Sleepwalking (somnambulism) usually occurs during stage 3 or 4 sleep: never occurs during dreaming, when core muscles are totally relaxed. Antidepressants reduce or abolish rem sleep without affecting aspects of dream recall. Cortical lesions can abolish dreaming without affecting rem sleep. Recuperation theories of sleep: being awake disrupts homeostasis of the body and sleep is required to restore it; sleep is terminated by a return to homeostasis.
