Wireless, battery-free, subdermally implantable platforms for transcranial and long-range optogenetics in freely moving animals

Jokubas Ausra, Mingzheng Wu, Xin Zhang, Abraham Vázquez-Guardado, Patrick Skelton, Roberto Peralta, Raudel Avila, Thomas Murickan, Chad R. Haney, Yonggang Huang, John A. Rogers*, Yevgenia Kozorovitskiy, Philipp Gutruf

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Wireless, battery-free, and fully subdermally implantable optogenetic tools are poised to transform neurobiological research in freely moving animals. Current-generation wireless devices are sufficiently small, thin, and light for subdermal implantation, offering some advantages over tethered methods for naturalistic behavior. Yet current devices using wireless power delivery require invasive stimulus delivery, penetrating the skull and disrupting the blood–brain barrier. This can cause tissue displacement, neuronal damage, and scarring. Power delivery constraints also sharply curtail operational arena size. Here, we implement highly miniaturized, capacitive power storage on the platform of wireless subdermal implants. With approaches to digitally manage power delivery to optoelectronic components, we enable two classes of applications: transcranial optogenetic activation millimeters into the brain (validated using motor cortex stimulation to induce turning behaviors) and wireless optogenetics in arenas of more than 1 m2 in size. This methodology allows for previously impossible behavioral experiments leveraging the modern optogenetic toolkit.

Original languageEnglish (US)
Article numbere2025775118
JournalProceedings of the National Academy of Sciences of the United States of America
Volume118
Issue number30
DOIs
StatePublished - Jul 27 2021

Keywords

  • Implantable
  • Long-range
  • Optogenetic
  • Transcranial
  • Wireless

ASJC Scopus subject areas

  • General

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