Members of the Perception Group use computational and behavioral techniques to study a variety of issues in perception, with a strong focus on vision.


Facilities include state-of-the-art equipment for precise control of visual stimuli, data collection and analysis, and modeling. Laboratory equipment includes computer-controlled displays and virtual reality systems for studies of color, motion, form, eye movements, visual attention, and depth; Maxwellian-view optical systems for studies of visual adaptation; and calibration equipment. Ties with colleagues at nearby institutions (such as Boston University, Harvard University, the New England College of Optometry, and the Schepens Eye Research Institute) expand both the physical and intellectual resources of the group.


Peter Bex
Specialization: Basic and Clinical Vision Science
Laboratory: Translational Vision Lab

Dr. Bex uses cross-disciplinary approaches to study basic and clinical vision science. His basic visual neuroscience research aims to extend models of sensory processing from laboratory settings to real world conditions. His translational clinical research uses behavioral and computational techniques to study the pathological processes in blinding eye diseases including Age-related Macular Disease, Glaucoma and Amblyopia. Dr. Bex aims to understand the bases and implications of these blinding eye diseases with the goal of developing efficient and sensitive methods for early diagnosis and to measure the presence and progression or remediation of vision loss.

Rhea Eskew
Specialization: Visual Perception and Psychophysics
Laboratory: Vision Lab

Dr. Eskew collects psychophysical data and employs it in the development of quantitative models of visual processes. His current interests include color detection and discrimination, light adaptation, response times and their relationship to thresholds, and plasticity in the visual system.

Associated Faculty

David Lewkowicz
Professor, Speech-Language Pathology & Audiology
Adjunct Professor, Department of Psychology

Ennio Mingolla
Professor and Chair, Department of Speech-Language Pathology and Audiology
Adjunct Professor, Department of Psychology