Premotor and motor cortices encode reward

Pavan Ramkumar, Brian Dekleva, Sam Cooler, Lee Miller, Konrad Kording

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Rewards associated with actions are critical for motivation and learning about the consequences of one's actions on the world. The motor cortices are involved in planning and executing movements, but it is unclear whether they encode reward over and above limb kinematics and dynamics. Here, we report a categorical reward signal in dorsal premotor (PMd) and primary motor (M1) neurons that corresponds to an increase in firing rates when a trial was not rewarded regardless of whether or not a reward was expected. We show that this signal is unrelated to error magnitude, reward prediction error, or other task confounds such as reward consumption, return reach plan, or kinematic differences across rewarded and unrewarded trials. The availability of reward information in motor cortex is crucial for theories of reward-based learning and motivational influences on actions.

Original languageEnglish (US)
Article numbere0160851
JournalPloS one
Volume11
Issue number8
DOIs
StatePublished - Aug 2016

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

Fingerprint Dive into the research topics of 'Premotor and motor cortices encode reward'. Together they form a unique fingerprint.

Cite this