Howtosignalprocessing
- How does an EEG indicate stages of sleep?
- How do you classify sleep stages?
- What is classification in EEG?
- What stage of sleep are you most likely experiencing if an EEG?
How does an EEG indicate stages of sleep?
Typically, as one goes to sleep, the low-voltage fast EEG pattern of wakefulness gradually gives way to slower frequencies, as NREM sleep goes from stage N1 (decrease in alpha) to stage N2 (spindles, K-complexes) to stage N3 (increasing amplitude and regularity of delta rhythm).
How do you classify sleep stages?
Sleep occurs in five stages: wake, N1, N2, N3, and REM. Stages N1 to N3 are considered non-rapid eye movement (NREM) sleep, with each stage a progressively deeper sleep. Approximately 75% of sleep is spent in the NREM stages, with the majority spent in the N2 stage.
What is classification in EEG?
The types of EEG waves[2,3] are identified according to their frequency range – delta: below 3.5 Hz (0.1–3.5 Hz), theta: 4–7.5 Hz, alpha: 8–13 Hz, beta: 14–40 Hz, and gamma: above 40 Hz. The EEG may show unusual electrical discharge when some abnormality occurs in the brain.
What stage of sleep are you most likely experiencing if an EEG?
Stage 4/REM
Although your body is completely at rest, electroencephalogram (EEG) readings indicate brain activity is similar to that of an awake person. Heart rate and blood pressure also increase, and your eyes also move erratically from side to side behind their eyelids. REM sleep is when most of your dreams occur.
