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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Lena Ting, PhD
Summary Sentence: "Temporal Discounting of Reward and its Link to Control of Movements" - Reza Shadmehr, PhD - Johns Hopkins University
Full Summary: BIOE Seminar SeriesReza Shadmehr, PhD - Johns Hopkins University
Reza Shadmehr, PhD - Johns Hopkins University"Temporal Discounting of Reward and its Link to Control of Movements"
Reza Shadmehr, PhD - Professor of Biomedical Engineering, Professor of Neuroscience, Johns Hopkins University
Faculty host: Lena Ting, PhD
Abstract:
Deciding how vigorously to move entails a compromise between moving slowly, to ensure low movement variability, and moving quickly to hasten the acquisition of reward. We propose a new framework for describing how the motor system resolves this dilemma based on the principle of maximizing the rate of reward – equivalent to a hyperbolic discounting of future reward. This normative principle generates the novel prediction that movement vigor will be influenced by the interval between movements. We find a remarkable correspondence between the predictions of the rate of reward theory and experimental data. Our results allow us to reject alternative forms of discounting such as exponential discounting as well as all previous models of motor control in which a movement is considered in isolation. We suggest that there exists a single cost, rate of reward, which may account for a range of behaviors from elementary movements to cognitive decision making.
The Bioengineering Seminar Series is a joint seminar series between IBB and the BME department. Seminars are held on Tuesdays or Thursdays between 11am-12pm in IBB room 1128 unless otherwise indicated.
