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Research has been conducted to determine the validity of the Vertebral Artery Screening Test (VAST). As with any screening, we would be interested in its sensitivity and specificity.
One’s initial gut feeling is that if there is already cochlear damage, then this would increase the chances of further hearing difficulty when compared with someone with normal cochlear function, given the same noise exposure. And shouldn’t that person therefore be counselled to double up on their efforts to wear hearing protection?
Many of us have experienced going to a concert and listening to the music from the tenth row back. Even if you know the words to the songs, it can be difficult to hear them. However, if we were to use hearing protection (such as Musicians’ earplugs), the words are much more intelligible.
Applying corrections for Air-Bone-Gap (ABG) when fitting air-conduction hearing aids is included in many generic and proprietary fitting prescriptions. Because prescription hearing aids are fit and verified via PC software modules, the choice of whether to apply ABG corrections is usually a default setting that may be somewhat hidden and, as a result, not often changed.
Bone-conduction hearing devices connected to skin-penetrating abutments (e.g., Oticon Medical Ponto, Cochlear BAHA) can certainly generate feedback. As expected, feedback becomes increasingly concerning with worsening degrees of cochlear hearing loss. However, the mechanisms contributing to feedback in bone-conduction hearing devices differ slightly from those in air-conduction hearing aids.
Measuring bone conduction hearing thresholds in-situ with the device and connection that the user is wearing is critical for several key reasons, particularly when it comes to the prescription of amplification targets and ensuring that the hearing aid is properly calibrated to meet the user’s specific needs.
There is nothing to measure for REMs in the bad ear; there’s no output there! It’s all going to the better ear.
Probably not. When you put the earmold on for the RECD, the sound will be entering the ear through the earmold tubing. Some will leak out through the vent, but no test signal will come in. That means the RECD only captures one of the two vent paths.
Non-occluding fittings present unique challenges and considerations when conducting real-ear measurements (REM). For clinicians who subscribe to the insertion gain method for verifying devices to prescriptive targets, confusion can arise regarding how to properly account for the real-ear unaided response (REUR) or real-ear unaided gain (REUG), given it is typically not impacted with open fittings.
Question: If fluid vibration in the inner ear is afferently transduced by the inner hair cells, and at some point efferent energy is received by the outer hair cells … and then with an altered fluid mechanical vibration, the signal is AGAIN TRANSDUCED afferently via the inner hair cells… how many of these feedback loops are possible before “running out of energy” and is the phrase “running out of energy” an appropriate metaphor for this?…and if not, why not?