Esther P. Gardner

Esther P. Gardner

Neuroscience Institute

Professor, Department of Neuroscience and Physiology

Keywords
sensory functions of the hand, systems, cognitive, & computational neuroscience
Summary

Our goal is to understand the basic neural and perceptual mechanisms underlying the human and simian ability to recognize and manipulate objects with the sense of touch. To correlate neurophysiological activity with hand movements, we use state-of-the-art computer-data-acquisition techniques, including digital video. Current projects include: 1) coding of motion and its direction across the skin; 2) neural representation of dot arrays forming textured surfaces; 3) cortical analysis of the size and shape of hand-grasped objects; and 4) spatial organization of receptive fields of cortical neurons receiving inputs from different classes of cutaneous mechanoreceptors.

We found that cortical processing involves feature extraction through convergent central organization of functional neuronal assemblies. These modules represent specific skin regions, such as individual fingers, the tips of several adjacent fingers, or fingers and palmar skin. However, individual neurons within a module respond to particular features, such as direction of motion or posture of hand. Neuronal-response quantification may reveal how parallel processing of sensory information in adjacent cortical modules helps distinguish object size, shape, and texture. Elucidation of such neural networks in the brain provides a basic architecture for object recognition in the sense of touch. Such findings are useful for developing intelligent hands with tactile sensors for prosthetic devices or robotics. They also have important clinical applications, for instance, creating quantitative sensory-function tests in patients with neurological disorders or peripheral nerve injuries, or in sensory substitution aids for visually and/or hearing-impaired individuals.

Phone

212-263-5412

Academic office

550 First Avenue

Fourth Floor

New York, NY 10016

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Professor, Department of Neuroscience and Physiology

Gardner, Esther P

Proceedings of the National Academy of Sciences of the United States of America (PNAS). 2017 Apr 4; 114(16):4048-4050

Bilaloglu, Seda; Lu, Ying; Geller, Daniel; Rizzo, John-Ross; Aluru, Viswanath; Gardner, Esther P; Raghavan, Preeti

Journal of neurophysiology. 2016 Mar; 115(3):1122-1131jn.00639.2015

Spike trains in posterior parietal and premotor cortex encode trained and natural grasping behaviors [Meeting Abstract]

Gardner E.P.; Putrino D.; Chen J.

BMC neuroscience. 2011; 12:?-?

Representation in somatosensory (SI) cortex of hand actions in prehension tasks [Meeting Abstract]

Chen, J.; Putrino, D.; Gardner, E. P.

Society for Neuroscience abstract viewer & itinerary planner. 2011; 41:??-?

Representation in motor cortex (MI) of hand actions in a bimanual prehension task [Meeting Abstract]

Putrino, D.; Chen, J.; Gardner, E. P.

Society for Neuroscience abstract viewer & itinerary planner. 2011; 41:??-?

Gardner, Esther P

Journal of physiology. 2010 Apr 01; 588(Pt 7):1035-1035

Spike trains in posterior parietal cortex (PPC) encode trained and natural grasping behaviors [Meeting Abstract]

Gardner, E. P.; Chen, J.

Society for Neuroscience abstract viewer & itinerary planner. 2010; 40:??-?

Cortical neurophysiology for movement control [Meeting Abstract]

Chen, Jessie; Gardner, EP

Society for Neuroscience abstract viewer & itinerary planner. 2010; 32:?-?#732