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Updated: Jul 7, 2025

10:35
Two-photon Calcium Imaging in Neuronal Dendrites in Brain Slices
Published on: March 15, 2018
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Two-photon calcium imaging of neuronal activity
Christine Grienberger1, Andrea Giovannucci2,3, William Zeiger4
1Department of Biology and Volen National Center for Complex Systems, Brandeis University, Waltham, MA, USA.
Summary
This primer introduces in vivo two-photon calcium imaging (2PCI), a powerful neuroscience technique for recording brain activity. It guides scientists through experimental steps, data analysis, and future directions for calcium imaging research.
Area of Science:
- Neuroscience
- Biophysics
Background:
- In vivo two-photon calcium imaging (2PCI) records neuronal activity in the intact brain.
- It relies on detecting intracellular calcium level changes using fluorescent indicators during neuronal firing.
Purpose of the Study:
- To provide a comprehensive guide for scientists new to 2PCI experiments.
- To explain the fundamental principles, experimental procedures, and data analysis for 2PCI.
Main Methods:
- Detailed explanation of the 2PCI technique and its underlying principles.
- Guidance on experimental preparation and execution.
- Overview of data analysis pipelines for calcium imaging data.
Main Results:
- Discussion of current limitations in 2PCI and potential solutions.
- Examples of ideal experimental preparations.
- Insights into emerging analysis methods and data sharing initiatives.
Conclusions:
- 2PCI is a versatile and increasingly powerful tool in neuroscience.
- The primer equips researchers with knowledge to overcome technical challenges and leverage future advancements in calcium imaging.

