EEG

Question 1

Delirium on EEG

Answer 1

Diffuse slowing

Question 2

Alpha waves

Answer 2

8-13Hz

Question 3

Beta waves

Answer 3

13-30Hz

Question 4

Theta waves

Answer 4

4-8Hz

Question 5

Delta waves

Answer 5

0.5-4Hz

Question 6

Delirium tremens on EEG

Answer 6

Hyperactive fast trace on EEG

Question 7

Huntington’s on EEG

Answer 7

Low voltage trace - frequency not affected

Question 8

Antipsychotics most likely to affect EEG

Answer 8

Clozapine (most pro-convulsant)

Question 9

Sporadic CJD EEG

Answer 9

triphasic sharp wave complexes at 1-2 Hz, superimposed on progressive suppression of cortical background activity

Question 10

Triphasic waves on EEG

Answer 10

TWs are hepatic encephalopathy, renal failure and anoxic injury.