Question:
Alpha waves are dominant when a person is
Alpha waves are dominant when a person is
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Common EEG waves:
\[
\boxed{
\begin{aligned}
\alpha &: 8\text{--}13\ \text{Hz (Relaxed)}
\beta &: >13\ \text{Hz (Alert)}
\theta &: 4\text{--}8\ \text{Hz (Drowsy)}
\delta &: <4\ \text{Hz (Deep sleep)}
\end{aligned}
}
\]
Updated On: Jul 14, 2026
- Sleeping deeply
- Mentally active
- Relaxed with eyes closed
- Under anaesthesia
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The Correct Option is C
Solution and Explanation
Step 1: Recall the characteristics of alpha waves.
Alpha waves have a frequency range of approximately
\[
8\text{--}13\ \text{Hz}.
\]
They are observed when a person is awake but relaxed with closed eyes.
Step 2: Identify the correct condition. Hence, \[ \boxed{\text{Relaxed with eyes closed}} \] is the correct answer. Therefore, \[ \boxed{(C)} \] is the correct answer.
Step 2: Identify the correct condition. Hence, \[ \boxed{\text{Relaxed with eyes closed}} \] is the correct answer. Therefore, \[ \boxed{(C)} \] is the correct answer.
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