Colleen Patricia Ryan

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About

Colleen Patricia Ryan is a cognitive neuroscientist whose research lies at the intersection of sensorimotor control, haptic perception, and motor learning. Her work investigates how the human brain integrates touch, vision, and prior assumptions to guide dexterous hand movements—a fundamental challenge in understanding both natural behavior and robotic rehabilitation. Ryan’s major contribution is demonstrating that tactile feedback plays a far more active role in motor planning than previously assumed. In her most-cited study (8 citations), she showed that merely moving the surface under a person’s fingertips alters the trajectory of their reaching movements, revealing that the brain treats unexpected tactile motion as a violation of a deep-seated prior—that touched objects are stationary. A follow-up study (1 citation) further showed that adaptation to such surface motion is only partial, suggesting strong priors resist complete recalibration. These findings have implications for neurorehabilitation, prosthetics, and human-robot interaction. Ryan’s work is notable for bridging classical motor control theory with modern Bayesian models of perception, offering a fresh perspective on how we interact with a dynamic world.