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Patterned Optogenetic Stimulation Using a DMD Projector.

Aanchal Bhatia1, Sahil Moza1, Upinder S Bhalla2

  • 1National Centre for Biological Sciences (NCBS), Tata Institute of Fundamental Research (TIFR), Bangalore, Karnataka, India.

Methods in Molecular Biology (Clifton, N.J.)
|September 1, 2020
PubMed
Summary
This summary is machine-generated.

This study presents an economical projector-based system for precise optical control of neural activity. The setup allows simultaneous targeting of segregated neurons, enabling complex brain activity simulations.

Keywords:
DMDOptical stimulationOptogeneticsPatterned stimulationProjector

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Area of Science:

  • Neuroscience
  • Optical Engineering
  • Biophysics

Background:

  • Optical manipulation offers precise control over neural activity with millisecond accuracy.
  • Spatial light patterning enables simultaneous targeting of distinct neuronal populations.

Purpose of the Study:

  • To describe the protocol for building an economical projector-based system for spatio-temporal light patterning.
  • To integrate this system with a microscope for electrophysiology applications.

Main Methods:

  • Utilizing commercially available projectors for spatial light modulation.
  • Integrating the projector system with a standard electrophysiology rig and microscope.
  • Developing an easy-to-program setup for rapid, distinct, and combinatorial light inputs.

Main Results:

  • The developed system allows for precise spatio-temporal control of neural activity.
  • The setup is economical (under $5000) and easy to assemble.
  • The system is suitable for simulating complex neural activity patterns.

Conclusions:

  • Projector-based light patterning provides an accessible method for advanced neuroscience research.
  • This cost-effective system facilitates sophisticated optical control of neuronal populations.
  • The technology supports applications requiring rapid and combinatorial neural stimulation.