AEP Final Exam Questions with Correct Answers Latest Update 2025/2026

AEP Final Exam Questions with Correct Answers Latest Update 2025/2026 ECochG latency - Answers 0-2 ms ECochG analysis method - Answers time (waveform) ECochG generator - Answers hair cells, auditory nerve ECochG ex/en - Answers exogenous ABR latency - Answers 1-10 ms ABR analysis method - Answers time (waveform) ABR generator - Answers auditory nerve, brainstem ABR ex/en - Answers exogenous MLR latency - Answers 15-35 ms MLR analysis method - Answers time (waveform) MLR generator - Answers subcortical, cortical MLR ex/en - Answers exogenous LAEP (LLR, P1-N1-P2) latency - Answers 50-250 ms LAEP analysis method - Answers time (waveform) LAEP generator - Answers cortical LAEP ex/en - Answers exogenous AND endogenous, mainly exogenous MMN latency - Answers 150-300 ms MMN analysis method - Answers time (waveform subtraction) MMN generator - Answers cortical MMN ex/en - Answers exogenous AND endogenous, mainly endogenous P300 latency - Answers 250-400 ms P300 analysis method - Answers time (waveform) P300 generator - Answers cortical P300 ex/en - Answers exogenous AND endogenous, mainly endogenous ASSR latency - Answers 10-30 ms ASSR analysis method - Answers frequency (spectrum) ASSR generator - Answers brainstem, subcortical, cortical (dependent on modulation rate) ASSR ex/en - Answers exogenous AND endogenous, but mainly exogenous What are the common components in AEP recording systems? - Answers stimulus generator, electrodes, amplifier, filter, signal average with artifact rejection, response display (screen), response processing, and printer Stimulus factors - Answers stimulus type, intensity, phase (polarity), duration, presentation rate, monaural/binaural presentation Recording factors - Answers electrode, electrode montage, filter, analysis window, number of stimulus/trials/sweeps, artifact rejection Subject factors - Answers age gender, status, temperature, medication stimulus type - Answers click vs tone bursts stimulus intensity - Answers ABR shows a systematic increase in latency and decrease in amplitude as stimulus intensity decrease from 70-80 dB nHL to the threshold stimulus rate - Answers odd number stimulus rates are used to reduce electrical noise, slower rates provide better morphology, moderate rates can be used to expedite threshold testing, at rates about 30/s, the latency of all components of the ABR increase and the amplitude decrease, comparison of ABRs at high rates vs slower rates is used to evaluate suspected neurological lesions stimulus polarity - Answers rarefaction stimuli can elicit an ABR with slightly shorter latency and amplitude higher for the early components compared to condensation, alternating stimulus can reduce stimulus artifacts - record with rarefaction and condensation separately at first stimulus duration - Answers as the rise time increases, latency increase, amplitude decrease, and the morphology deteriorates - while longer rise time gives more frequency specificity, it will generate poorer neural synchrony stimulus frequency - Answers high frequency stimuli elicit shorter latencies than lower frequency stimuli mode of stimulation - Answers monaural vs binaural - comparison can be used to determine the binaural interaction component (BIC: left (ear response + right ear response) - binaural response) electrode montage - Answers ipsilateral vs contralateral recording filter - Answers filters are used to remove electrical activities at unwanted frequencies (typically use 100-3000 Hz for ABR), peak rounding when low pas filter cutoff decreases to 1500 but less effect on amplitude/latency, decrease the high pass filter cutoff this will result in incre