Learning from Sensory and Reward Prediction Errors
Author Information
Author(s): Izawa Jun, Shadmehr Reza
Primary Institution: Johns Hopkins School of Medicine
Hypothesis
Can learning from sensory prediction errors be behaviorally dissociated from learning from reward prediction errors during motor adaptation?
Conclusion
Motor adaptation can be driven by both sensory and reward prediction errors, with distinct effects on sensory remapping.
Supporting Evidence
- Learning from sensory prediction errors leads to changes in the neural system that predicts sensory consequences of motor commands.
- Reward prediction errors do not produce changes in the predicted sensory consequences of motor commands.
- Subjects in the ERR group showed significant sensory remapping compared to the RWD group.
Takeaway
When we learn to move our bodies, we can learn from mistakes in how we expected to feel versus how we actually felt, and this can change how we move in the future.
Methodology
Subjects performed a reach adaptation task with varying sensory feedback conditions to assess the effects of sensory and reward prediction errors on motor adaptation.
Limitations
The study may not generalize to all types of motor learning or to populations with different neurological conditions.
Participant Demographics
14 volunteers, average age 26±4.7 years old, divided into two groups (ERR and RWD).
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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