demenet and kleitman study

REM sleep

A stage of sleep characterized by rapid eye movement and vivid dreaming.

Non-REM sleep (NREM)

Stages of sleep without rapid eye movements, including lighter and deeper stages.

Ultradian rhythms

Biological rhythms that occur more than once in 24 hours, such as the sleep cycle.

Aserinsky and Kleitman

Researchers who discovered the occurrence of REM sleep and its relation to dreaming.

EEG (electroencephalogram)

Used to measure electrical activity in the brain and identify sleep stages.

EOG (electrooculogram)

Used to measure eye movements during sleep.

Dream recall

The ability of an individual to remember and describe their dreams after waking.

Sc scanning hypothesis

The theory that eye movements in REM sleep correlate with visual elements in dreams.

Informed consent

A principle requiring participants to be fully informed about study procedures before participating.

Ecological validity

The extent to which findings can be generalized to real-world settings.