Synaptic plasticity in the cerebellum is thought to contribute to motor learning. In particular, long-term depression (LTD) at parallel fiber (PF) to Purkinje neuron (PN) excitatory synapses has attracted much attention of neuroscientists as a primary cellular mechanism for motor learning. In contrast, roles of plasticity at cerebellar inhibitory synapses in vivo remain unknown. Here, we have i...

mainder is concerned with the vestibular system. This book will be of greatest value to clinical and laboratory investigators studying postural control or vestibular function. The twenty-six members of the symposium are prominent investigators from such fields as neuroanatomy, neurophysiology, and otolaryngology. The material is based upon published results which appeared up to late 1967. There...

The firing behavior of seven antidromically identified ascending tract of Deiters (ATD) neurons was recorded in one alert squirrel monkey trained to pursue moving targets and to fixate visual targets at different distances from the head during whole body rotation. 2. ATD cells generated signals related to contralateral horizontal smooth pursuit eye movements and to ipsilateral angular and linea...

ABSTRACT Purpose To assess the effectiveness of vestibular rehabilitation on functioning, gains in semicircular canals Video Head Impulse Test (v-HIT), responses to evoked myogenic potentials (VEMP), depressive symptoms, balance, and dizziness older adults. Methods Longitudinal, quasi-experimental, analytical study conducted between December 2019 July 2022, 50 adults with disorders, submitted e...

Background and Aim: The video head-impulse test (vHIT) measures the vestibulo-ocular reflex (VOR) driven by each semicircular canal, following high-acceleration head rotations. The main measurable response is the ratio of eye movement velocity to the angular head velocity, which reflects canal function. Although normative data is available for VOR gain, most studies only report horizontal VOR c...

Geometric considerations indicate that the human translational vestibulo-ocular reflex (tVOR) should have substantially different properties than the angular vestibulo-ocular reflex (aVOR). Specifically, tVOR cannot simultaneously stabilize images of distant and near objects on the retina. Most studies make the tacit assumption that tVOR acts to stabilize foveal images even though, in humans, t...