Decision uncertainty as a context for motor memory

Kisho Ogasa, Atsushi Yokoi, Gouki Okazawa, Morimichi Nishigaki, Masaya Hirashima and Nobuhiro Hagura ()
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Kisho Ogasa: National Institute of Information and Communications Technology (NICT)
Atsushi Yokoi: National Institute of Information and Communications Technology (NICT)
Gouki Okazawa: Chinese Academy of Sciences
Morimichi Nishigaki: Honda R&D Co. Ltd
Masaya Hirashima: National Institute of Information and Communications Technology (NICT)
Nobuhiro Hagura: National Institute of Information and Communications Technology (NICT)

Nature Human Behaviour, 2024, vol. 8, issue 9, 1738-1751

Abstract: Abstract The current view of perceptual decision-making suggests that once a decision is made, only a single motor programme associated with the decision is carried out, irrespective of the uncertainty involved in decision making. In contrast, we show that multiple motor programmes can be acquired on the basis of the preceding uncertainty of the decision, indicating that decision uncertainty functions as a contextual cue for motor memory. The actions learned after making certain (uncertain) decisions are only partially transferred to uncertain (certain) decisions. Participants were able to form distinct motor memories for the same movement on the basis of the preceding decision uncertainty. Crucially, this contextual effect generalizes to novel stimuli with matched uncertainty levels, demonstrating that decision uncertainty is itself a contextual cue. These findings broaden the understanding of contextual inference in motor memory, emphasizing that it extends beyond direct motor control cues to encompass the decision-making process.

Date: 2024
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DOI: 10.1038/s41562-024-01911-x

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