BAEP EXAM QUESTIONS AND ANSWERS
Disk EEG electrodes are applied with ________ and sealed to prevent _____ & provide
_______ - Answers :applied with collodion, sealed with plastic tape or sheet to prevent
drying and provide protection from fluids
What does bone wax do? - Answers :secures earphone but doesn't protect from fluid
entry
how are subdermal needles secured? - Answers :same manner as EEG electrodes
WI latency - Answers :1.4 ms
WIII latency - Answers :3.4 ms
WV latency - Answers :5.5 ms
I-III interpeak latency - Answers :2.0 ms
III-V interpeak latency - Answers :2.0 ms
I-V interpeak latency - Answers :4.0 ms
WI generator - Answers :distal VIIIth nerve
WIII generator - Answers :pons - superior olivary complex
WV generator - Answers :midbrain - lateral lemniscus terminating in inferior colliculus
What is the active electrode for recording wave I? - Answers :Ai (- input)
What is the active electrode for recording waves II-V - Answers :Cz (+ input)
Wave I is also known as - Answers :N1
Cz is referred to as ____, which is recorded in the ______ input - Answers :vertex
positive
positive input
Ai is a ______ potential recorded in the _____ input - Answers :negative potential
negative input
Both channels from monaural stimulation represent ______ ear/auditory pathway -
Answers :one!
, A1/AS is the ___ ear - Answers :left ear, auris sinister
A2/AD is the _____ ear - Answers :right ear, auris dexterous
Left ear stim will only produce a wave I in what recording montage? - Answers :Cz-A1
Right ear stim will only produce a wave I in what recording montage? - Answers :Cz-A2
The contralateral ear referenced to Cz channel is for recording... - Answers :waves II-V
independent of wave I
Wave I appearing in contralateral ear recording indicates... - Answers :failure of white
noise masking
What are the 2 major purposes of contralateral recording channels? - Answers
:validates white noise masking at appropriate intensity
improved ID of wave V from wave IV
Masking prevents.. - Answers :bone conducted crossover responses
Recommended intensity of white noise masking - Answers :60 dB SPL
failure to use white noise masking can produce a.. - Answers :false negative (bc of
crossover responses?)
ID of wave V can also be facilitated by.. - Answers :decreasing stim intensity
Present ipsilateral response and absent contralateral response can only be caused by
one thing... - Answers :fluid in the headbox/jackbox
not: lost stim, lost A2, masking problem, drill
Conductive hearing loss is also known as - Answers :peripheral
conductive hearing loss involves the.. - Answers :ear canal, tympanic membrane,
middle ear
BAEP changes w/ conductive hearing loss - Answers :increased absolute latencies,
normal interpeaks
Sensorineural hearing loss is also known as - Answers :cochlear hearing loss
sensorineural hearing loss involves the.. - Answers :cochlea!
Disk EEG electrodes are applied with ________ and sealed to prevent _____ & provide
_______ - Answers :applied with collodion, sealed with plastic tape or sheet to prevent
drying and provide protection from fluids
What does bone wax do? - Answers :secures earphone but doesn't protect from fluid
entry
how are subdermal needles secured? - Answers :same manner as EEG electrodes
WI latency - Answers :1.4 ms
WIII latency - Answers :3.4 ms
WV latency - Answers :5.5 ms
I-III interpeak latency - Answers :2.0 ms
III-V interpeak latency - Answers :2.0 ms
I-V interpeak latency - Answers :4.0 ms
WI generator - Answers :distal VIIIth nerve
WIII generator - Answers :pons - superior olivary complex
WV generator - Answers :midbrain - lateral lemniscus terminating in inferior colliculus
What is the active electrode for recording wave I? - Answers :Ai (- input)
What is the active electrode for recording waves II-V - Answers :Cz (+ input)
Wave I is also known as - Answers :N1
Cz is referred to as ____, which is recorded in the ______ input - Answers :vertex
positive
positive input
Ai is a ______ potential recorded in the _____ input - Answers :negative potential
negative input
Both channels from monaural stimulation represent ______ ear/auditory pathway -
Answers :one!
, A1/AS is the ___ ear - Answers :left ear, auris sinister
A2/AD is the _____ ear - Answers :right ear, auris dexterous
Left ear stim will only produce a wave I in what recording montage? - Answers :Cz-A1
Right ear stim will only produce a wave I in what recording montage? - Answers :Cz-A2
The contralateral ear referenced to Cz channel is for recording... - Answers :waves II-V
independent of wave I
Wave I appearing in contralateral ear recording indicates... - Answers :failure of white
noise masking
What are the 2 major purposes of contralateral recording channels? - Answers
:validates white noise masking at appropriate intensity
improved ID of wave V from wave IV
Masking prevents.. - Answers :bone conducted crossover responses
Recommended intensity of white noise masking - Answers :60 dB SPL
failure to use white noise masking can produce a.. - Answers :false negative (bc of
crossover responses?)
ID of wave V can also be facilitated by.. - Answers :decreasing stim intensity
Present ipsilateral response and absent contralateral response can only be caused by
one thing... - Answers :fluid in the headbox/jackbox
not: lost stim, lost A2, masking problem, drill
Conductive hearing loss is also known as - Answers :peripheral
conductive hearing loss involves the.. - Answers :ear canal, tympanic membrane,
middle ear
BAEP changes w/ conductive hearing loss - Answers :increased absolute latencies,
normal interpeaks
Sensorineural hearing loss is also known as - Answers :cochlear hearing loss
sensorineural hearing loss involves the.. - Answers :cochlea!
