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Dual color optogenetic control of neural populations using low-noise, multishank optoelectrodes

Journal Article · · Microsystems & Nanoengineering (Online)
 [1];  [2];  [3];  [4];  [2];  [3];  [2];  [5];  [5]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Biomedical Engineering; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Center for Micro and Nanotechnology
  2. New York Univ. (NYU), NY (United States). NYU Neuroscience Inst. School of Medicine
  3. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Electrical Engineering and Computer Science
  4. Tel Aviv Univ. (Israel). Dept. of Physiology and Pharmacology. Sackler Faculty of Medicine. Sagol School of Neuroscience
  5. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Biomedical Engineering. Dept. of Electrical Engineering and Computer Science
Optogenetics allows for optical manipulation of neuronal activity and has been increasingly combined with intracellular and extracellular electrophysiological recordings. Genetically-identified classes of neurons are optically manipulated, though the versatility of optogenetics would be increased if independent control of distinct neural populations could be achieved on a sufficient spatial and temporal resolution. We report a scalable multisite optoelectrode design that allows simultaneous optogenetic control of two spatially intermingled neuronal populations in vivo. We describe the design, fabrication, and assembly of low-noise, multisite/multicolor optoelectrodes. Each shank of the four-shank assembly is monolithically integrated with 8 recording sites and a dual-color waveguide mixer with a 7 × 30 μm cross-section, coupled to 405 nm and 635 nm injection laser diodes (ILDs) via gradient-index (GRIN) lenses to meet optical and thermal design requirements. To better understand noise on the recording channels generated during diode-based activation, we developed a lumped-circuit modeling approach for EMI coupling mechanisms and used it to limit artifacts to amplitudes under 100 μV upto an optical output power of 450 μW. We implanted the packaged devices into the CA1 pyramidal layer of awake mice, expressing Channelrhodopsin-2 in pyramidal cells and ChrimsonR in paravalbumin-expressing interneurons, and achieved optical excitation of each cell type using sub-mW illumination. We highlight the potential use of this technology for functional dissection of neural circuits.
Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); New York Univ. (NYU), NY (United States); Tel Aviv Univ. (Israel); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
European Research Council (ERC); National Inst. of Health (NIH) (United States); USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1465313
Report Number(s):
LLNL-JRNL--747557; 932565
Journal Information:
Microsystems & Nanoengineering (Online), Journal Name: Microsystems & Nanoengineering (Online) Vol. 4; ISSN 2055-7434
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

A wireless, implantable optoelectrochemical probe for optogenetic stimulation and dopamine detection journal August 2020
Complex vectorial optics through gradient index lens cascades journal September 2019
Next-generation interfaces for studying neural function journal August 2019
Probing activation‐induced neurochemical changes using optogenetics combined with functional magnetic resonance spectroscopy: a feasibility study in the rat primary somatosensory cortex journal July 2019
Brain Rhythms During Sleep and Memory Consolidation: Neurobiological Insights journal January 2020
Complex vectorial optics through gradient index lens cascades text January 2019

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