Representation of sleep stages by color density spectral array.
Multiple-channel color density spectral array (CDSA) was used to graphically represent sleep stages. This technique uses color coding of Fast Fourier Transforms to provide a compact display of frequency, power, and real time. Distinct CDSA patterns correlate to the awake, non-REM, and REM sleep states. The graphic compression of sleep data could considerably shorten the time required to stage overnight sleep recordings.
D003116:Color; D004569:Electroencephalography; D005583:Fourier Analysis; D006801:Humans; D008991:Monitoring, Physiologic / Q000379:methods*; D012815:Signal Processing, Computer-Assisted; D012894:Sleep Stages / Q000502:physiology*