Difficulty with hearing in background noise is a common complaint among hearing aid users. Therefore, the measurement of signal-to-noise ratio (SNR) loss is important because a person’s ability to un…
Difficulty with hearing in background noise is a common complaint among hearing aid users. Therefore, the measurement of signal-to-noise ratio (SNR) loss is important because a person’s ability to un…
What are smooth pursuit eye movements? Smooth pursuit eye movements, also known as smooth pursuit, enable the eyes to effortlessly track and follow moving objects within the visual field. In cases wh…
What is the spontaneous nystagmus test? The spontaneous nystagmus test determines if the patient has any nystagmus, with or without fixation, when sitting with head and eyes in a neutral position. Th…
What is positional nystagmus testing? Positional nystagmus testing determines whether a change of position of the patient’s vestibular systems in space provokes nystagmus. Some nystagmus is only evid…
What are saccades? Saccades are fast and voluntary eye movements that bring images of a new object onto the fovea, which is part of the retina that is reponsible for successful visual acuity. What is…
What is the gaze test? The gaze test measures the patient’s ability to maintain a steady gaze on an object at various angles without the eye generating extraneous movements (i.e. square wave jerks or…
What is the optokinetic nystagmus test? The optokinetic nystagmus test measures the patient's ability to follow objects in motion with the eyes while the head remains stationary. This function is kno…
What is the caloric test? The caloric test is a test of the lateral semicircular canals which identifies the degree to which the vestibular system is responsive and determines how symmetric the respo…
Treatment of the posterior canal Turn the head 45 degrees away from the affected side Rapidly move into side-lying position on the affected side Rapidly move to patients the other side with the nose…
Treatment of the anterior canal Turn the head 45 degrees to the affected side. Rapidly move into side-lying position on the affected side. Rapidly move to patients unaffected side with the nose 45° u…
First part of the exercise being shown with assistance Second part of the exercise shown without assistance Helpful hints Before recommending any form of positioning maneuver, it is important to asce…
