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research article

Embodiment in episodic memory through premotor-hippocampal coupling

Meyer, Nathalie  
•
Gauthier, Baptiste  
•
Stampacchia, Sara  
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September 10, 2024
Communications Biology

Episodic memory (EM) allows us to remember and relive past events and experiences and has been linked to cortical-hippocampal reinstatement of encoding activity. While EM is fundamental to establish a sense of self across time, this claim and its link to the sense of agency (SoA), based on bodily signals, has not been tested experimentally. Using real-time sensorimotor stimulation, immersive virtual reality, and fMRI we manipulated the SoA and report stronger hippocampal reinstatement for scenes encoded under preserved SoA, reflecting recall performance in a recognition task. We link SoA to EM showing that hippocampal reinstatement is coupled with reinstatement in premotor cortex, a key SoA region. We extend these findings in a severe amnesic patient whose memory lacked the normal dependency on the SoA. Premotor-hippocampal coupling in EM describes how a key aspect of the bodily self at encoding is neurally reinstated during the retrieval of past episodes, enabling a sense of self across time.

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2024_Meyer.pdf

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Main Document

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http://purl.org/coar/version/c_970fb48d4fbd8a85

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openaccess

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CC BY-NC-ND

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2.03 MB

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e45a418cfd0c33bc1588f67fdc84b051

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