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Electroencephalogram (EEG) Lab 4

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Questions and Answers

What is the primary purpose of an electroencephalogram (EEG)?

To record electrical activity in the brain (correct)

To assess muscle activity in the body

To measure blood pressure in the brain

To analyze heart rate variability

What is the frequency range of the theta wave?

Between 7.5 and 13 Hz

Between 3.5 and 7.5 Hz (correct)

Less than 3 Hz

Greater than 13 Hz

At what age is the alpha wave typically seen in normal relaxed adults?

After the thirteenth year (correct)

Up to 13 years old

Up to 1 year old

After the twentieth year

What happens to the alpha wave when the eyes are opened or alerted by any mechanism?

It disappears (B) Signup and view all the answers

What is the highest amplitude wave in EEG?

Delta wave (C) Signup and view all the answers

What is the term for the brain cells communicating through electrical impulses?

Electrical activity (C) Signup and view all the answers

What is the function of the amplifier in an EEG?

To amplify the electrical impulses from the brain (A) Signup and view all the answers

What is the frequency range of the delta wave?

Below 3 Hz (C) Signup and view all the answers

Where is the alpha wave typically seen in the head?

In the posterior regions of the head on each side (C) Signup and view all the answers

At what stage of sleep do delta waves dominate?

Stages 3 and 4 of sleep (D) Signup and view all the answers

When do brain cells normally communicate through electrical impulses?

Always (B) Signup and view all the answers

How are the electrical impulses from the brain sent to be recorded?

Via electrodes placed on the head (B) Signup and view all the answers

What disappears when the eyes are opened or alerted by any mechanism?

Alpha wave (C) Signup and view all the answers

What is the highest amplitude wave in an EEG recording?

Delta wave (C) Signup and view all the answers

At what age is the theta wave normal in children?

Up to 13 years old (C) Signup and view all the answers

Electroencephalogram (EEG) Lab 4

Choose a study mode

Podcast

Questions and Answers

What is the primary purpose of an electroencephalogram (EEG)?

What is the frequency range of the theta wave?

At what age is the alpha wave typically seen in normal relaxed adults?

What happens to the alpha wave when the eyes are opened or alerted by any mechanism?

What is the highest amplitude wave in EEG?

What is the term for the brain cells communicating through electrical impulses?

What is the function of the amplifier in an EEG?

What is the frequency range of the delta wave?

Where is the alpha wave typically seen in the head?

At what stage of sleep do delta waves dominate?

When do brain cells normally communicate through electrical impulses?

How are the electrical impulses from the brain sent to be recorded?

What disappears when the eyes are opened or alerted by any mechanism?

What is the highest amplitude wave in an EEG recording?

At what age is the theta wave normal in children?

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