Waves - Notes & Discussions

Question 1

What is the delta frequency band

Answer 1

.5 to 3.0

Question 2

What is the theta frequency band

Answer 2

4 - 7.5

Question 3

What is the alpha frequency band?

Answer 3

8 - 13 Hz

Question 4

What is the beta frequency band?

Answer 4

13.5 - 30 Hz

Question 5

What is the gamma frequency band?

Answer 5

30 Hz and up

Question 6

Which frequency band is found normally in deep sleep

Answer 6

Delta frequency band

Question 7

What frequency band do we most likely see the lighter sleep stages of stages 1 and 2

Answer 7

Theta

Question 8

What region of the brain are the alpha frequency bands most often seen?

Answer 8

In the occipital region

Question 9

When patient is relaxed awake, relaxed with eyes closed which wave frequency band is generally derived?

Answer 9

The Alpha ranges

Question 10

Which wave frequencies are derived when the patient is in heavy concentration or when on benzodiazepines?

Answer 10

Beta waves

Question 11

What is the conversion formula for frequency?

Answer 11

1/duration

Question 12

What is the conversion formula for duration?

Answer 12

1/frequency

Question 13

What does the acronym PDR stand for and when will it appear for the patient?

Answer 13

PDR = posterior dominant rhythm and it will appear when the patient’s eyes are closed, and the person awake and relaxed

Question 14

What is the unit of measurement for the frequency bands

Answer 14

The unit of measurement is the Hz (Hertz)

Question 15

What is frequency in EEG?

Answer 15

Frequency is the number of wave cycles per second or Hertz (Hz)

Question 16

What is “duration” in EEG?

Answer 16

Duration is the time that an activity or wave persists and it’s measured in seconds