Auditory Brainstem Response Study guides, Class notes & Summaries

What is auditory brainstem response testing? Correct Answer 1. It is a measure of neural activity that is generated in response to an auditory stimulus. 2. The activity is measured by electrodes that are located at a distance from the skin electrodes. 3. The activity is conducted through body tissues and fluid to the electrodes from the auditory structures Why is ABR sometimes and issue? Correct Answer difficult to pinpoint the exact source of the response we can infer from the time it take...

What is an ABR? Correct Answer Electrical potential (far field) generated by a transient stimulus which generates synchronous firing of auditory neurons in auditory nerve and brainstem. What is recorded, how long does it take for the ABR waves occur and how long is test time? Correct Answer Seven waves - wave I, III and V are most important Occur withn 15ms of stimulus onset (generally within 12ms) Test time is 20-30 mins in a cooperative subject. Name the first five wave generator sites...

ABR (a.k.a. BAER, BSER, or EPs) measures _____ activity in response to a stimulus that can be picked up by electrodes on the head. Correct Answer electical Is ABR a direct measure of hearing? Correct Answer No (measures physiology) The ABR electrodes are placed behind the ear (usually on the mastoid process), on the vertex (highest point of the head), & somewhere on the other ear as "ground." The electrodes look at changes b/w the ear stimulus & _____. Correct Answer brain Where might...

what type of recording is ABR? - far-field, exogenous response is ABR near field or far field? - far-field Is ABR endogenous, exogenous, mesogenous? - exogenous response How many waves are in an ABR? - comprised of 6-7 waves (i.e. peaks) ABR is measured within ______________ relative to stimulus onset - first 12 millisecond early latency is: - time-locked Waves will be _______ apart - millisecond Wave I generator - - distal portion of 8th nerve - 1st order neurons - AP for ECoG Wave I...

What are the various auditory evoked potentials? (5) - cochlear potential auditory brainstem response AMLR ALR endocochlear potential cochlear potentials (3) - summating potential cochlear microphonic compound action potential summating potential - a DC potential that appears during acoustic stimulation (OHC origin) cochlear microphonic - AC potential that mirrors the stimulus characteristics (OHC origin) compound action potential - synchronized response of the auditory nerve to an...

What are some common names for ABR? - Brainstem Evoked Response (BER), Brainstem Auditory Evoked Potential (BAER) Is ABR near or far field? - Far Is ABR a mesogenous, exogenous, or endogenous response? - EXogenous The ABR is comprised of _____ waves (peaks) which are denoted by _______ - 6-7 roman numerals The ABR is measured with in the first _______ msec relative to stim onset - 12 msec The response for the ABR is ______ locked - time locked, the response is tied to stimulus timing ...

what is AEP - and auditory evoked potential what does ABR measure - the series of "neuroelectric events" that represent sound traveling to the brain there is an immediate electrical response in the cochlea when - a sound is introduced to the ear as the signal is propagated along the auditory pathway, it encounters - a number of "relay stations" time elapses as the signal - travels between these relay stations on its way to the auditory cortex when "sound" reaches each of these...

What is an ABR? - Electrical potential (far field) generated by a transient stimulus which generates synchronous firing of auditory neurons in auditory nerve and brainstem. What is recorded, how long does it take for the ABR waves occur and how long is test time? - Seven waves - wave I, III and V are most important Occur withn 15ms of stimulus onset (generally within 12ms) Test time is 20-30 mins in a cooperative subject. Name the first five wave generator sites. - Wave I - distal portion...

What is an ABR? - ️️Electrical potential (far field) generated by a transient stimulus which generates synchronous firing of auditory neurons in auditory nerve and brainstem. What is recorded, how long does it take for the ABR waves occur and how long is test time? - ️️Seven waves - wave I, III and V are most important Occur withn 15ms of stimulus onset (generally within 12ms) Test time is 20-30 mins in a cooperative subject. Name the first five wave generator sites. - ️️Wav...

what type of recording is ABR? - ️️far-field, exogenous response is ABR near field or far field? - ️️far-field Is ABR endogenous, exogenous, mesogenous? - ️️exogenous response How many waves are in an ABR? - ️️comprised of 6-7 waves (i.e. peaks) ABR is measured within ______________ relative to stimulus onset - ️️first 12 millisecond early latency is: - ️️time-locked Waves will be _______ apart - ️️millisecond Wave I generator - ️️- distal por...