FOUNDATIONS: EEG RHYTHMS

Question 1

Delta rhythm:

Answer 1

Slow <4hz and large in amplitude

- Deep sleep

Question 2

Theta rhythm:

Answer 2

4-7 Hz

- Can occur in sleeping and awake states

Question 3

Alpha rhythms:

Answer 3

8-13 Hz

• largest over the occipital cortex
• Quiet and waking states

Question 4

Mu Rhythms;

Answer 4

• Similar to alpha frequency BUT largest over the MOTOR and SOMATOSENSORY areas

Question 5

Beta Rhythms:

Answer 5

15-30 Hz

Question 6

Gamma Rhythms:

Answer 6

Fast.

30-90 Hz and in the activates cortex

Question 7

What are brief 8-14 Hz waves associated with sleep?

Answer 7

Spindles

Question 8

What are brief bouts of 80-200 Hz oscillations?

Answer 8

Ripples

Question 9

What is the K complex?

Answer 9

Waveform occurring in stage 2 of NREM (non rapid eye movement) sleep