Optokinetic and Vestibular Oculomotor Responses and their Interaction Following Hemilabyrinthectomy in the Cat
One of the most striking examples of plasticity in the central nervous system is the compensation of the highly disabling deficits which result from unilateral peripheral vestibular lesions. In fact, many studies in different species (cf. Schaefer and Meyer 1974) have shown that the vestibular compensation processes are remarkable both in their speed and in the degree of functional recovery. In particular, ocular and postural imbalance subside almost completely within the first post-operative week, and behavioral tests in cats and monkeys have shown that 30–40 days after hemilabyrinthectomy (HL) the recovery of postural and locomotor abnormalities is so extensive that it is often difficult to distinguish between operated and non-operated animals (Lacour et al. 1976; Xerri and Lacour 1980).
KeywordsVestibular Nucleus Lesion Side Spontaneous Nystagmus Velocity Storage Slow Phase Velocity
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