Question

In EEG, the waves which are quite low in frequency and having high amplitude are

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

Answer 1

Answer: (B)

Delta waves

In EEG recording, a wave is any type of brain activity recorded in wave shape. These are of different types - Alpha (frequency of 8-13 second), Beta waves (frequency of more 13 seconds), Theta waves (frequency of 4-7 waves per second).

Delta waves are at frequencies up to 4 waves per second and are also called slow activity but have highest amplitude that is strongest signal. These are common in children of age upto one year. Hence option B is correct.