Early Rehabilitation Using Head Impulse Test for Acute Vestibular Deficit

"These are gaze stabilisation exercises under vHIT control, between post-operative days 1 to 6.~The patient sits facing a wall 2 metres away. The investigator places the vHIT device on the participant's head and ensures that it fits properly.~This is followed by an initial calibration phase (the patient must follow a laser dot with his eyes).~Then comes stimulation phase: the investigator, standing behind the patient, places his hands on the sides of the patient's lower jaw, which he is asked to clench. The investigator asks the subject to stare at a visual target on the wall in front of the patient. The investigator then performs a series of low-amplitude, high-speed head movements in the plane of the lateral canals and on the side of the vestibular deficit.~The patient is encouraged to resume fixation of the visual target as quickly as possible.~For each treatment session, patients should perform a minimum of 10 impulses and a maximum of 30 impulses on the deafferented side. Each"

"These are visually guided saccade exercises under vHIT device control but without head movements (saccade module), between post-operative days 1 to 6.~For this sham treatment, the modalities are identical to the experimental treatment session, up to the calibration phase described above.~For the stimulation phase, the investigator, standing behind the patient, places his hands on the sides of the patient's lower jaw, which he is asked to clench. The investigator asks the subject to stare at a visual target on the wall in front of the patient. The target then jumps horizontally to trigger visually guided saccades or slides horizontally to trigger an eye-tracking movement. The investigator stabilises the patient's head to prevent any head movement. The patient is encouraged to resume or maintain fixation of the visual target as quickly as possible.~A minimum of 5 horizontal saccade sequences and 5 horizontal eye-tracking sequences will be performed. Each training session lasts approxi"