The term ‘in-situ’ in the context of audiology is often used to refer to when a hearing instrument or other device is being worn. What is in-situ SPL? In-situ SPL refers to the characteristics of a s…
I’ve noticed a consistent air bone gap at 4000 Hz during audiometry. Can you explain why this happens? For a complete answer to this issue the reader is strongly urged to read Margolis et al. (2013)…
Answer: This is a fascinating question which has occupied the audiological community for some time now, because in theory both techniques arise from the same neural generators but in practice there h…
As the name suggests the CE-Chirp® family is not a single stimulus but instead a family of short duration acoustic stimuli which can be used in evoked potential testing. They were designed with the o…
These numbers represent the number of cycles in a puretone burst sound signal commonly used in Auditory Brainstem Response (ABR) testing for hearing threshold estimation. The ABR relies upon an abrup…
I wanted to know whether the Eclipse can be used to do ABRs on children that are not sedated (e.g. a 4-year old looking at an iPad). Is sedation essential with children when using the Eclipse? Answer…
The regular ABR stimulus is in dB nHL and the masking in dB SPL. How do we know if the levels are comparative? In other words, if the AC toneburst is 40 dB nHL and the masking intensity is 45 dB SPL…
The HiLo CE-Chirp® is a stimulus which is used in automated ABR or ABRIS (auditory brainstem response infant screening). Hearing screening programs typically recommend to screen hearing initially usi…
I've watched your MMN webinar. Thank you. Please can you help me evaluate the MMNs below, which are a 1 kHz frequent and 1.5 kHz rare stimulus. Answer Thank you very much for sharing your work. I bel…
This is a pretty interesting question for several reasons but the answers to your question is not easy. The direct answer is we do not know what the rationale is for any advantage of CE-Chirp® over t…
If you find an asymmetry between the ears in ASSR, can you apply masking? It is absolutely key that any masking needs are met for accurate diagnosis and management. The principles of masking ASSR are…
Both of these auditory evoked potentials responses arise from generators in the thalamo-cortical region of the central auditory system and so you would associate them with objectively assessing thres…
