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Gaze stabilization exercises, such as X1 and X2 exercises, are essential in vestibular rehabilitation for patients with unilateral vestibular hypofunction (UVH). Standard progressions typically involve increasing the duration, transitioning from a plain to a busy background, adding balance challenges, and advancing to X2 exercises. However, beyond these standard progressions, there are additional strategies that can further enhance a patient's recovery.

In this post, we will review three additional progression options that have proven useful in clinical practice. 

Gaze Stabilization Progression #1: Bringing the Target Closer

How to Perform:
Patients perform the X1 gaze stabilization...

Persistent Postural Perceptual Dizziness (PPPD or 3PD) is a chronic functional vestibular condition that can be a challenge to manage. While it isn’t caused by structural damage or psychiatric disorders, it’s one of the most common reasons people experience long-term dizziness. This condition is especially prevalent in specialized dizziness centers, where understanding PPPD can make a big difference in patient care. Let’s take a closer look at its symptoms, history, and what healthcare providers need to know. We hope that in sharing what we have found, this helps you better understand this challenging condition and improve patient outcomes.

What Does PPPD Look Like?

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In an effort to better understand the Storage Velocity Mechanism (SVM) and its clinical significance—something that isn’t talked about much in courses—I decided to dive deeper into what it is, why it matters, and what I should know as a vestibular therapist. Here’s what I found.

What is the Storage Velocity Mechanism?

As we know, the semicircular canals detect angular acceleration. However, with motion at a steady speed the cupula in the semicircular canal returns to its resting position within 7 seconds. Despite this, we can maintain visual stability during sustained rotations, thanks to the Storage Velocity Mechanism (SVM).

The SVM essentially integrates...

As vestibular therapists, we often focus on assessing the function of the semicircular canals in the inner ear. However, the otolithic organs—the utricle and saccule—play a crucial role in maintaining balance and spatial orientation and are not routinely assessed. Two electrophysiological tests, Cervical Vestibular Evoked Myogenic Potentials (cVEMPs) and Ocular Vestibular Evoked Myogenic Potentials (oVEMPs), provide valuable insights into otolithic function. I often forget the difference between the two VEMPs tests, so hopefully writing this blog will make it stick. If not, at least I have a quick resource to refer back to!

If you are like me, these tests may not be...

As healthcare providers, we occasionally encounter patients with dizziness that does not fit the usual patterns of vestibular disorders. One such condition is Third Window Syndrome (TWS), which most commonly presents as Superior Semicircular Canal Dehiscence (SSCD). There are other presentations of TWS aside from SSCD and TWS itself was first described by Minor in 1998. 

In this blog, we will cover what TWS is, its causes, symptoms, triggers, diagnosis, and treatment options.

What is Third Window Syndrome?

Third Window Syndrome (TWS) encompasses a group of inner ear disorders characterized by an abnormal opening or thinning in the bony structures of the inner ear. The most...

We’re excited to share an assessment technique that has significantly enhanced our ability to evaluate patients with vestibular hypofunction: the Skull Vibration Induced Nystagmus Test (SVINT). After hearing about it a few times over the past few years, we decided to investigate further and are glad we did. Given our access to infrared goggles, implementing SVINT was quite affordable since portable handheld massage devices can be picked up at places like Walmart.

Clinically, the test has helped us pick up vestibular hypofunctions when our other battery of tests such as looking for gaze evoked nystagmus, head impulse test, head shaking nystagmus test, and dynamic visual acuity tests...

As a healthcare provider, seeing patients with various medical conditions is part and parcel of our daily routine. However, there are certain conditions that are relatively rare, but require keen attention and understanding for effective management should they occur. One such condition is an acoustic neuroma, also known as vestibular schwannoma. In this blog, I will provide insights into what an acoustic neuroma is, its prevalence, clinical presentation, conservative treatment principles, and indications for surgery. Then, if you want to take a deeper dive, I'll provide some of my favourite resources at the end of the this blog. 

Understanding Acoustic Neuroma:

Acoustic neuroma is...

Do you ever struggle distinguishing between different types of nystagmus, such as end point nystagmus (EPN) and gaze evoked nystagmus (GEN)? If so, you're not alone. Working closely with therapists in vestibular therapy over the years we've found this to be a common issue. Given such, let's review three practical tips when assessing patients that we have found helpful.

Actually, before we get too far, we need to remember that end point nystagmus is a normal physiological response, while a true positive gaze evoked nystagmus finding is indicative of a central or peripheral vestibular disorder.

As we will see in this blog, end point nystagmus is a bit of a misnomer as it can be...

As a physiotherapist, the decision to use a particular treatment often rests on a delicate balance between using something as there is strong research behind it or not. This holds true with the use of blue light blocking glasses to treat concussion and vestibular migraine. Some optometrists we have talked to indicated that they do not endorse the use of these glasses due to a lack of research. Then, on the other hand we hear from people who say these glasses were "game changers" for managing their symptoms. Is there something behind these glasses, are they a placebo, or a bit of both?

Let's explore the rationale for considering the use of blue light blocking glasses.

Blue Light Blocking...

Have you ever wondered why Lewis Carroll's "Alice in Wonderland" seems like such a trippy and surreal journey? Well, there's a fascinating theory that connects this whimsical tale to a peculiar phenomenon known as "Alice in Wonderland Syndrome" or AIWS. This syndrome is closely associated with migraines and can offer a curious glimpse into the world of distorted perceptions. It has been said that Lewis Carroll himself had migraines, so this may be a tale expressing what he was experiencing personally.

What is Alice In Wonderland Syndrome or AIWS?

Alice in Wonderland Syndrome (AIWS) is a rare and intriguing neurological condition, often linked to migraines. But, it can also be triggered by...