ACNS Guidelines and Terminology Questions and Answers.

ACNS Guidelines and Terminology
Questions and Answers.
According to ACNS guidelines, EEG recordings should include a minimum of __________
channels and _________ electrodes.

a) 16; 21

b) 20; 21

c) 18; 15

c) 16; 25 - Answer a) 16; 21



Electrocerebral inactivity is defined as no EEG activity over

a) 7 microvolts

b) 2 microvolts

c) 5 microvolts

d) 1 microvolts - Answer b) 2 microvolts



According to the Adult ACNS EEG terminology, a pattern that has at least three independent
lateralized patterns with a least one in each hemisphere is

a) focal

b) multifocal

c) lateralized

d) bilateral independent - Answer b) multifocal



According to the Adult ACNS EEG Terminology, a pattern can qualify as rhythmic or periodic as
long as it continues for at least how many cycles?

a) 4

b) 3

c) 6

d) 8 - Answer c) 6



MARKED AMPLITUDE ASYMMETRY

a) consistent asymmetry in amplitude on a bipolar recording of less than 50% amplitude

b) consistent asymmetry in amplitude on a referential recording of less than 50% amplitude

c) consistent asymmetry in amplitude on a referential recording of more than 50% amplitude