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Research Projects
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Kinematics and Plasticity of the Vestibulo-Ocular Reflex
The vestibular system, through the vestibulo-ocular reflex (VOR) maintains vision during angular (aVOR) and linear (lVOR) head movements by producing compensatory eye movements that stabilize images on the retina. The lVOR is kinematically demanding, requiring adjustment in the size stabilizing eye movements in response to a variety of geometric factors such as gaze angle and target distance. For example, the closer the target is being viewed, the larger the compensatory response that is required. I am studying how the vestibular system incorporates this information into the eye movement response, and the capabilities and nature of adaptive control of such influences. More info...
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Multisensory Integration in Spatial Localization and Motion Processing
Path integration studies in humans show that we have the ability to accurately reproduce our path in the absence of visual information. It has been suggested that this ability is supported by acceleration signals, as transduced by the otolith organs, which may then be integrated twice to produce path excursion. Vestibuloocular responses to linear translations (LVOR), however, show considerable frequency dependence, with substantial attenuation in response to low frequency translational motion. More info...
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Role of Gravito-Inertial Force Vector in the Generation of Perception and Eye Movements
The relationship between vergence angle and target distance can be modified with periscopic optics. With enough experience, this relationship becomes "hard wired" into the vestibular substrate More info...
