What does a delta wave on an EEG scan signify?
The subject is working through a problem involving math
Slow wave sleep, or non-rapid-eye-movement sleep
A painful sensation experienced during the reading
The accessing of spatial information
An extreme emotion, such as anger or sadness, occurring at the time of the reading
In which stage of sleep do we typically dream?
REM sleep
Stage 1
Stage 2
Stage 4
Stage 3
