MODULE IX - TERMINOLOGY 2 - A. NORMAL VARIANTS

Question 1

What does the B.E.T.S acronym stand for and what type of waves are they

Answer 1

benign epileptiform transients of sleep (SSS) - small sharp spikes

Question 2

What are lambda waves?

Answer 2

a normal variant seen during an awake state or scanning, found in occipital leads, looks like posts (sail -like waves)

Question 3

What are wickets?

Answer 3

a normal variant seen in awake and light sleep, adults over 30, midtemproal region with a frequency of 4-7hz or independent. morphology is similar to mu-rhythm

Question 4

What is mu-rhythm?

Answer 4

mu rhythm is a normal variant seen in an awake state in the centroparietal area that looks arch/comb like with a frequency of 7-11hz

Question 5

What normal variant appears mostly in adults, 50 or older, have abrupt onset,mostly seen in temporal-parietal region

Answer 5

S.R.E.D.A

Question 6

What is fast alpha?

Answer 6

when alpha rhythm is seen as twice its frequency, found in the occipital leads?

Question 7

What is slow alpha?

Answer 7

when alpha frequency is seen as half its frequency, seen in the occipital leads

Question 8

What is phantom spike and wave?

Answer 8

small biphasic spike with larger after going slow wave

Question 9

In what region of the head are 14 and 6 Hz positive spikes found?

Answer 9

posterior temporal

Question 10

What is R.M.T.D?

Answer 10

a normal variant found in the mid temporal region that are flat topped, notched, or sharply contoured with a frequency of 4-7Hz.