Question

Select the correct match regarding EEG.

• A. $\alpha$ -waves of EEG - 14-30 Hz/sec
• B. $\beta$ -waves of EEG - 4-7 Hz/sec
• C. $\delta$ -waves of EEG - 1-3 Hz/sec
• D. $\theta$ -waves of EEG - 8 -13 Hz/sec

Answer 1

The correct option is C $\delta$ -waves of EEG - 1-3 Hz/sec

A. $\alpha$ -waves has a frequency between 7.5 to 13 Hz/sec. It is usually best seen in the posterior regions of the head on each side.

B. $\beta$ =waves has fast activity of 14 or greater Hz/sec. It is usually best seen in the frontier regions of the head.

C. $\delta$ - waves has a frequency of 3 Hz/sec or below. It tends to be the highest in amplitude and the slowest waves.

D. $\theta$ = waves has a frequency of 3.5 to 7.5 Hz/sec. It is perfectly normal in children below 13 years and in sleep.

So the correct answer is '$\delta$'.