Question

Wave pattern seen in EEG in people who are drowsy / sleepy with closed eyes is

• A. Alpha waves
• B. Beta waves
• C. Delta waves
• D. Theta waves

Hint:

EEG frequency ranges: Alpha (8–13 Hz, relaxed), Beta (14–30 Hz, alert), Theta (4–7 Hz, drowsy), Delta (0.5–4 Hz, deep sleep). Use mnemonics like "Alpha = Eyes Closed Relaxed".

Answer 1

The Correct Option is A

Alpha waves (8–13 Hz) are recorded in relaxed, awake adults with eyes closed. Beta waves → alert thinking; Delta → deep sleep; Theta → drowsy/light sleep.