Abstract:
:We are constantly interacting with our environment whilst we encode memories. However, how actions influence memory formation remains poorly understood. Goal-directed movement engages the locus coeruleus (LC), the main source of noradrenaline in the brain. Noradrenaline is also known to enhance episodic encoding, suggesting that action could improve memory via LC engagement. Here we demonstrate, across seven experiments, that action (Go-response) enhances episodic encoding for stimuli unrelated to the action itself, compared to action inhibition (NoGo). Functional magnetic resonance imaging, and pupil diameter as a proxy measure for LC-noradrenaline transmission, indicate increased encoding-related LC activity during action. A final experiment, replicated in two independent samples, confirmed a novel prediction derived from these data that emotionally aversive stimuli, which recruit the noradrenergic system, modulate the mnemonic advantage conferred by Go-responses relative to neutral stimuli. We therefore provide converging evidence that action boosts episodic memory encoding via a noradrenergic mechanism.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Yebra M,Galarza-Vallejo A,Soto-Leon V,Gonzalez-Rosa JJ,de Berker AO,Bestmann S,Oliviero A,Kroes MCW,Strange BAdoi
10.1038/s41467-019-11358-8subject
Has Abstractpub_date
2019-08-06 00:00:00pages
3534issue
1issn
2041-1723pii
10.1038/s41467-019-11358-8journal_volume
10pub_type
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