The vestibulo-ocular reflex (VOR) reduces motion of visual images on the retina by evoking eye movements in the opposite direction to head movements. A form of motor learning, known as VOR adaptation, calibrates the VOR by gradually correcting the reflex when image motion is persistently associated with head turns. VOR adaptation is essential for ensuring adequate visual acuity during head turns and for restoring proper motor and perceptual orientation in space in response to changes in the organism or its environment, such as occur with growth and development, aging, injury to the peripheral or central nervous system, the donning of a new pair of spectacles, or travel in space. The proposed experiments examine the neural mechanisms of VOR adaptation by asking the following questions: How do the parameters of visual-vestibular stimulation (image motion during head turns) affect VOR adaptation? (Aim 1) What patterns of neural signals are consistently present during stimuli that induce VOR adaptation, and might therefore serve as the neural trigger for VOR adaptation? (Aim 2) How might plasticity in neural pathways through the cerebellum contribute to VOR adaptation? (Aim 3) The VOR is one of many motor systems that is thought to rely on cerebellum-dependent learning to maintain normal sensorimotor function and for recovery of function following injury. The anatomy and physiology of the cerebellum is very regular across the extent of this structure, therefore, the principles uncovered in studies of VOR adaptation may be useful for the development of rational therapeutic approaches to many forms of sensorimotor dysfunction.

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Research Project (R01)
Project #
5R01DC004154-02
Application #
6176930
Study Section
Special Emphasis Panel (ZRG1-IFCN-5 (04))
Program Officer
Platt, Christopher
Project Start
1999-09-30
Project End
2004-08-31
Budget Start
2000-09-01
Budget End
2001-08-31
Support Year
2
Fiscal Year
2000
Total Cost
$294,486
Indirect Cost
Name
Stanford University
Department
Biology
Type
Schools of Medicine
DUNS #
800771545
City
Stanford
State
CA
Country
United States
Zip Code
94305
Suvrathan, Aparna; Payne, Hannah L; Raymond, Jennifer L (2018) Timing Rules for Synaptic Plasticity Matched to Behavioral Function. Neuron 97:248-250
Nguyen-Vu, Td Barbara; Zhao, Grace Q; Lahiri, Subhaneil et al. (2017) A saturation hypothesis to explain both enhanced and impaired learning with enhanced plasticity. Elife 6:
Suvrathan, Aparna; Payne, Hannah L; Raymond, Jennifer L (2016) Timing Rules for Synaptic Plasticity Matched to Behavioral Function. Neuron 92:959-967
Katoh, Akira; Shin, Soon-Lim; Kimpo, Rhea R et al. (2015) Purkinje cell responses during visually and vestibularly driven smooth eye movements in mice. Brain Behav 5:e00310
Shin, Soon-Lim; Zhao, Grace Q; Raymond, Jennifer L (2014) Signals and learning rules guiding oculomotor plasticity. J Neurosci 34:10635-44
Kimpo, Rhea R; Rinaldi, Jacob M; Kim, Christina K et al. (2014) Gating of neural error signals during motor learning. Elife 3:e02076
Guo, Christine C; Ke, Michael C; Raymond, Jennifer L (2014) Cerebellar encoding of multiple candidate error cues in the service of motor learning. J Neurosci 34:9880-90
Conner, Alana L; Cook, Karen S; Correll, Shelley J et al. (2014) Obscuring gender bias with ""choice"". Science 343:1200
Nguyen-Vu, T D Barbara; Kimpo, Rhea R; Rinaldi, Jacob M et al. (2013) Cerebellar Purkinje cell activity drives motor learning. Nat Neurosci 16:1734-6
Guo, Cong C; Raymond, Jennifer L (2010) Motor learning reduces eye movement variability through reweighting of sensory inputs. J Neurosci 30:16241-8

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