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Area of Science:

  • Neuroscience
  • Optical Engineering
  • Biotechnology

Background:

  • Genetically encoded tools enable light-based control of neuronal activity.
  • All-optical methods offer precise, single-cell resolution targeting in 3D.
  • Existing techniques are complex and often limited to a single wavelength.

Purpose of the Study:

  • To develop a simpler, dual-color optical approach for precise 3D neural targeting.
  • To overcome the limitations of single-wavelength and complex existing methods.
  • To enable reconfigurable targeting of large neuronal populations.

Main Methods:

  • Utilized a fiber bundle and a spatial light modulator for light patterning.
  • Employed two-photon excitation for high-resolution spot generation.
  • Leveraged fiber bundle properties for simultaneous dual-color patterning in 3D.

Main Results:

  • Demonstrated high-resolution excitation spot generation in a 3D volume.
  • Achieved simultaneous dual-color two-photon light patterning.
  • Showcased a simple and effective method for multicolor cell targeting.

Conclusions:

  • The novel optical approach offers a simple and suitable alternative for precise multicolor cell targeting.
  • This technique simplifies the setup and operation of advanced optogenetic tools.
  • Facilitates precise manipulation of neuronal activity in living tissues with multiple colors.