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