case_images: PMC6160561_01
case_images: The caloric irrigations at 30 and 44  reveal a right areflexia with a peak slow phase velocity inferior to <= 5 /s.
case_images: fneur-09-00773-g0001.jpg
case_images: PMC6160561_01_fneur-09-00773-g0001.jpg
case_images: F1
case_images: The vestibular workup revealed a right areflexia to bithermal irrigations (peak slow phase velocity <= 5 /s at 30 and 44 ; Figure 1), a head impulse test pathological for the 3 right semicircular canals (Figure 2), symmetrical responses at horizontal torsion swing tests (0.05-0.1 Hz, omegamax = 60 /s), and presence of cervical and ocular vestibular evoked myogenic potentials (Figure 3).
case_images: The video-head-impulse-test (VHIT; Synapsis ; Marseille, F) is pathological for the 3 right semicircular canals.
case_images: fneur-09-00773-g0002.jpg
case_images: PMC6160561_01_fneur-09-00773-g0002.jpg
case_images: F2
case_images: The vestibular workup revealed a right areflexia to bithermal irrigations (peak slow phase velocity <= 5 /s at 30 and 44 ; Figure 1), a head impulse test pathological for the 3 right semicircular canals (Figure 2), symmetrical responses at horizontal torsion swing tests (0.05-0.1 Hz, omegamax = 60 /s), and presence of cervical and ocular vestibular evoked myogenic potentials (Figure 3).
case_images: The cervical and ocular vestibular evoked myogenic potentials (4 ms tone burst; 500 Hz; alternate polarity at 5 Hz) are present on both sides.
case_images: fneur-09-00773-g0003.jpg
case_images: PMC6160561_01_fneur-09-00773-g0003.jpg
case_images: F3
case_images: The vestibular workup revealed a right areflexia to bithermal irrigations (peak slow phase velocity <= 5 /s at 30 and 44 ; Figure 1), a head impulse test pathological for the 3 right semicircular canals (Figure 2), symmetrical responses at horizontal torsion swing tests (0.05-0.1 Hz, omegamax = 60 /s), and presence of cervical and ocular vestibular evoked myogenic potentials (Figure 3).
case_images: Graphic representation of the most impressive episode of palinopsia experienced by our patient.
case_images: fneur-09-00773-g0004.jpg
case_images: PMC6160561_01_fneur-09-00773-g0004.jpg
case_images: F4
case_images: When, after a few steps, his daughter told him that he was walking in a strange way, he became aware of his illusion (Figure 4).