Expert's echo

Normative Values of semicircular canal Vestibulo-Ocular reflex gain in infants and children

This study presents a method for the video head impulse test (VHIT) that uses remote video to assess balance in infants. Traditional VHIT requires uncomfortable goggles, unsuitable for young children.

SYNAPSYS VHIT provides reliable results in infants as young as 3 months old. The test takes just 5-10 minutes and tracks head and eye movements during rapid head turns.

Symphonia, developed by Inventis, stands as a cutting-edge counseling tool for Hearing Care Professionals. Designed to simulate realistic sound environments, Symphonia employs advanced auditory algorithms such as Ambisonic and Vector-Based Amplitude Panning (VBAP) to create immersive audio experiences. This innovative software allows patients to experience the benefits of hearing aids before purchase, through lifelike simulations of everyday noise scenarios and directional sound sources.

Comparative Study of Two Video-oculography Technologies in Quantitative Head Impulse Testing

This study compares two video head impulse test (VHIT) technologies: traditional goggle-based systems and a newer remote camera approach.

Current VHIT devices typically require patients to wear goggles equipped with eye tracking and head movement sensors. This study explores the SYNAPSYS VHIT system, which utilizes a remote camera instead, eliminating the need for goggles.

I would like to perform a Stenger Test with my Piccolo audiometer. I don't see the Stenger option in the Maestro software toolbar. What steps should I take?

The Speech Intelligibility Index (SII) gauges the portion of a speech signal audible to a listener. It serves as a valuable tool during hearing aid fittings, providing patients with insights into the availability of speech with or without aids. Additionally, it helps assess whether the aids offer an appropriate level of audibility, prompting adjustments if needed. SII, a percentage between 0% and 100%, correlates with speech intelligibility. For example, an SII score of 25% suggests roughly half of the speech is intelligible, while 80% predicts most of it will be.

Vertigo serves as a symptom rather than a definitive diagnosis, making it imperative to consult a healthcare professional for an accurate determination of its root cause^[1].

A 47-year-old woman comes to my office complaining of the appearance of a set of symptoms for a few months.

The most relevant were the following: double vision, blurred vision, oscillopsia, visual delay, difficulty following moving objects, instability with eye or head movements (particularly in horizontal gaze). At the onset she went to an ophthalmologist, but the evaluation carried out did not reveal any pathological elements. Looking at the report I immediately realized that an important element had been omitted: the evaluation of extrinsic ocular motility.

To ensure a successful examination, it is crucial to provide the patient with the following instructions in advance:

The "TEN Test" (Threshold Equalizing Noise) was developed to identify dead regions in the cochlea, specifically targeting the inner hair cells (for additional information, refer to Brian Moore's 2004 Ear and Hearing). Recognizing these regions proves valuable in both selecting cochlear implant candidates and appropriately fitting hearing aids.

There are two types of tools for recording vHIT: one with a remote camera and one with an accelerometer head mounted.