Closed-loop optogenetic control of the dynamics of neural activity in non-human primates
Author(s)
Type
Journal Article
Abstract
Electrical neurostimulation is effective in the treatment of neurological disorders, but associated recording artefacts generally limit its applications to open-loop stimuli. Real-time and continuous closed-loop control of brain activity can, however, be achieved by pairing concurrent electrical recordings and optogenetics. Here we show that closed-loop optogenetic stimulation with excitatory opsins enables the precise manipulation of neural dynamics in brain slices from transgenic mice and in anaesthetized non-human primates. The approach generates oscillations in quiescent tissue, enhances or suppresses endogenous patterns in active tissue and modulates seizure-like bursts elicited by the convulsant 4-aminopyridine. A nonlinear model of the phase-dependent effects of optical stimulation reproduced the modulation of cycles of local-field potentials associated with seizure oscillations, as evidenced by the systematic changes in the variability and entropy of the phase-space trajectories of seizures, which correlated with changes in their duration and intensity. We also show that closed-loop optogenetic neurostimulation could be delivered using intracortical optrodes incorporating light-emitting diodes. Closed-loop optogenetic approaches may be translatable to therapeutic applications in humans.
Date Issued
2023-04-01
Date Acceptance
2022-08-14
Citation
Nature Biomedical Engineering, 2023, 7, pp.559-575
ISSN
2157-846X
Publisher
Nature Research
Start Page
559
End Page
575
Journal / Book Title
Nature Biomedical Engineering
Volume
7
Issue
4
Copyright Statement
© 2022, The Author(s), under exclusive licence to Springer Nature Limited. This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1038/s41551-022-00945-8
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000870627800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
ACTIVATION
DEEP BRAIN-STIMULATION
Engineering
Engineering, Biomedical
INTERNEURONS
MOTOR
PLASTICITY
Science & Technology
Technology
TOOLBOX
Publication Status
Published
Coverage Spatial
England
Date Publish Online
2022-10-20