AEPs

Question 1

Name the 3 changes in AEP markers that we look for

Answer 1

Wave morphology
Latency
Amplitude

Question 2

Where do the waves originate from?
Wave I
Wave II
Wave III
Wave IV 
Wave V

Answer 2

I: Distal 8th nerve
II: Proximal 8th nerve
III: CN
IV: SOC
V: Lateral lemniscus

Question 3

When do the waves reach adult values?
1st peak:
5th peak:
I-V interpeak latency

Answer 3

1st peak: a few months after birth
5th peak: by 2-3 years
I-V interpeak latency: 2-3 years

Question 4

MLRs:

P0 develops from where?

Answer 4

IC

Question 5

MLRs:

Na develops from where?

Answer 5

Subcortical and cortical structures

Question 6

P0-Na possibly reflects transmission from?

Answer 6

IC to thalamus

Question 7

When is P0 to Na most clearly detectable?

Answer 7

33rd week and onwards

Question 8

When does P0 to Na mature by?

Answer 8

6 months

Question 9

Pa arises from?

Answer 9

Temporal lobe and thalamocortical projections

Question 10

When do LLRs mature by?

Answer 10

18-20 years of age

Question 11

LLRs can be recorded in premies 25-28 weeks GA. Are they normal?

Answer 11

No, delayed

Question 12

LLRs: By year 1 what waveform is evident?

Answer 12

P1-N2

Question 13

LLRs: Years 7-12 what waveform appears?

Answer 13

N1 begins to appear

Question 14

Which AEP develops first?

Answer 14

ABRs

Question 15

Pa increases in detectability from ages 2-5.

Pa is mature by when?

Answer 15

8-10 years