Neural mechanisms for learning self and other ownership

Patricia L. Lockwood (), Marco K. Wittmann, Matthew A. J. Apps, Miriam C. Klein-Flügge, Molly J. Crockett, Glyn W. Humphreys and Matthew F. S. Rushworth
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Patricia L. Lockwood: University of Oxford
Marco K. Wittmann: University of Oxford
Matthew A. J. Apps: University of Oxford
Miriam C. Klein-Flügge: University of Oxford
Molly J. Crockett: University of Oxford
Glyn W. Humphreys: University of Oxford
Matthew F. S. Rushworth: University of Oxford

Nature Communications, 2018, vol. 9, issue 1, 1-11

Abstract: Abstract Sense of ownership is a ubiquitous and fundamental aspect of human cognition. Here we used model-based functional magnetic resonance imaging and a novel minimal ownership paradigm to probe the behavioural and neural mechanisms underpinning ownership acquisition for ourselves, friends and strangers. We find a self-ownership bias at multiple levels of behaviour from initial preferences to reaction times and computational learning rates. Ventromedial prefrontal cortex (vmPFC) and anterior cingulate sulcus (ACCs) responded more to self vs. stranger associations, but despite a pervasive neural bias to track self-ownership, no brain area tracked self-ownership exclusively. However, ACC gyrus (ACCg) specifically coded ownership prediction errors for strangers and ownership associative strength for friends and strangers but not for self. Core neural mechanisms for associative learning are biased to learn in reference to self but also engaged when learning in reference to others. In contrast, ACC gyrus exhibits specialization for learning about others.

Date: 2018
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DOI: 10.1038/s41467-018-07231-9

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