Projects
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Vergence and Stereopsis
Vergence to disparity targets in the central visual field is impaired in individuals with amblyopia and strabismus.
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Summer Research Institute
The goal of the Summer Research Institute program is to help people with visual impairments acquire advanced skills related to STEM subjects and careers. Apply to participate in the inaugural session by May 1, 2023 using the link below.
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Challenges in Head-Free Eye Tracking in Health & Disease
This project is focused on investigating sources of error and potential improvement methodologies for head-free eye tracking, particularly in individuals with known oculomotor deficits
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Magic Map
The Magic Map is an interactive 3D map installed at the Magical Bridge Playground in Palo Alto, California. It consists of a 1/100 scale 3D bronze representation of the playground, which includes over seventy play structures organized into multiple play zones and paths. When the tip of the "Magic Wand" tethered to the map is pointed to a specific feature on the map, the name and description of the feature are read aloud in audio. This interactivity makes the map accessible to visitors with visual impairments, and without requiring them to read braille.
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Vestibular Function in AMD: Verticality Perception
To accurately perceive one’s own state and that of the surrounding environment, visual, vestibular and somatosensory inputs must be appropriately weighted and dynamically reweighted depending on the environment and task difficulty, as well as signal reliability (and availability). Aging is associated with an increase on visual dependence (a greater weighting of visual information). In this project we investigate how loss of visual information due to AMD affects this reweighting process and if an increase in visual dependence may be maladaptive in AMD.
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Effects of Noise Exposure Across the Lifespan on Balance and Stability in Older Adults
Falls in older adults are common, have high societal and monetary costs, often lead to injury and can even be fatal. It is known that noise can damage the vestibular periphery resulting in postural instability and compromised balance. This project investigates how natural aging is accelerated by lifetime noise exposure, and how that can lead to impaired vestibular function, contributing to propensity to fall.
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Robotic Oculomotor Simulator
Current eye tracking and calibration algorithms do not accommodate eccentric viewing and the capacity for accurate eye tracking is difficult to assess in individuals with central visual field loss, and few studies of naturalistic oculomotor behavior exist. To address this problem, we are developing a binocular robotic model of the human eyes that can simulate fixation and eye movements with an eccentric preferred retinal locus in one or both eyes and allow for precise assessment of eye tracking performance of head mounted computer vision-based eye tracking systems.
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Modeling Smooth Pursuit Eye-Movement Deficits in Macular Degeneration
The project investigates the deficits in smooth pursuit in individuals with age-related macular degeneration within the framework of a Bayesian model.
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Hearing the World: A Remote Study of Auditory Perception
We aim to investigate the nature of auditory perception and how the brain learns rules for interpreting sounds.
