The human body relies on the balance triad consisting of the vestibular system, vision, and proprioception to maintain homeostasis. The vestibular system is the main organ that maintains balance and perceives the body in relation to its surroundings. Its endings are the three semicircular canals of the potbelly ridge and the two vestibular saccades, which perceive linear and angular acceleration stimuli, respectively. The vestibular representative areas of the brain are the posterior-superior part of the auditory area of the superior temporal gyrus and the superior part of the insula of the temporoparietal junction. The entire neural pathway from the peripheral receptors to the vestibular center of the brain becomes the vestibular system. Although the visual and deep senses are involved in maintaining a normal spatial image, lesions in them rarely complain of vertigo. Vestibular lesions are the main cause of pathological vertigo. When the vestibular system is dysfunctional, vestibular sensations are out of sync with those from proprioception and vision, producing a motion illusion, or vertigo. Abnormal information from the vestibular nucleus excites the nucleus accumbens through the medial longitudinal tract, producing nystagmus, and the abnormal movements are constantly corrected by feedback modulation from other nuclei. As a result, a fast and slow rhythmic eye movement is produced, i.e. nystagmus; imbalance information from the vestibular nuclei through the medial longitudinal tract, the vestibulospinal tract and the vestibular-cerebellar-red nucleus-spinal cord pathway, which feedback regulates the function of the anterior horn cells of the spinal cord, trying to keep the body in balance, but because the signal is wrong, the body tilts due to improper balance regulation, and the imbalance of the limb movement makes the finger objects deflected.