Abstract
To understand subjective evaluation of an option, various disciplines have quantified the interaction between reward and effort during decision making, producing an estimate of economic utility, namely the subjective ‘goodness’ of an option. However, variables that affect utility of an option also influence the vigor of movements toward that option. For example, expectation of reward increases speed of saccadic eye movements, whereas expectation of effort decreases this speed. These results imply that vigor may serve as a new, real-time metric with which to quantify subjective utility, and that the control of movements may be an implicit reflection of the brain's economic evaluation of the expected outcome.
Original language | English (US) |
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Pages (from-to) | 323-336 |
Number of pages | 14 |
Journal | Trends in neurosciences |
Volume | 42 |
Issue number | 5 |
DOIs | |
State | Published - May 2019 |
Keywords
- Parkinson's disease
- aging
- basal ganglia
- effort
- motor control
- movement speed
- reaction time
- reward
- vigor
ASJC Scopus subject areas
- General Neuroscience