Three-photon microscopy: an emerging technique for deep intravital brain imaging

Area of Science:

• Neuroscience
• Biomedical Imaging
• Cellular Biology

Background:

• Two-photon microscopy advanced in vivo brain imaging but is limited to superficial cortical layers.
• Accessing deep brain structures is crucial for understanding higher-order functions and pathologies.
• Existing imaging techniques have limitations in visualizing deep neural circuits and cellular dynamics.

Purpose of the Study:

• To review the transformative impact of three-photon microscopy on neuroscience research.
• To highlight its capability in visualizing deep brain structures and cellular processes.
• To discuss applications in studying neural circuits, glial biology, and neuroimmune interactions.

Main Methods:

• Utilizing three-photon microscopy for minimally invasive, high-resolution in vivo brain imaging.
• Applying the technology to visualize deep cortical and subcortical regions in model organisms.
• Examining advancements in imaging neural circuits, glial cells, and disease mechanisms.

Main Results:

• Three-photon microscopy provides unprecedented access to deep brain structures for cellular observation.
• The technology facilitates detailed investigation of neural circuit dynamics in vivo.
• It enables the study of glial biology and neuroimmune interactions in previously inaccessible areas.

Conclusions:

• Three-photon microscopy is revolutionizing neuroscience by enabling deep brain exploration.
• It offers new possibilities for understanding brain function, pathology, and disease mechanisms.
• Continued technical innovation promises further advancements in visualizing the living brain.