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Two-Photon in vivo Imaging of Dendritic Spines in the Mouse Cortex Using a Thinned-skull Preparation
Published on: May 12, 2014
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Comprehensive software suite for functional analysis and synaptic input mapping of dendritic spines imaged in vivo
Yiyi Yu1, Liam M Adsit2, Ikuko T Smith2,3,4
1University of California, Santa Barbara, Department of Electrical and Computer Engineering, Santa Barbara, California, United States.
Neurophotonics
|April 17, 2024
Summary
We developed AUTOTUNE, an automated analysis tool for in vivo functional synaptic imaging data. This software simplifies the analysis of dendritic spine activity, accelerating neuroscience research.
Area of Science:
- Neuroscience
- Computational Neuroscience
- Biophysics
Background:
- Genetically encoded sensors and two-photon imaging enable real-time functional imaging of synaptic activity in single dendritic spines in awake animals.
- Existing software for cell body imaging is inadequate for analyzing dendritic spine data due to distinct structural characteristics.
- Analysis of large datasets from in vivo functional synaptic imaging presents a significant computational challenge.
Purpose of the Study:
- To address the need for specialized tools for analyzing in vivo functional synaptic imaging data.
- To provide a comprehensive software suite with a user-friendly interface for analyzing dendritic spine activity.
- To overcome computational hurdles in processing large imaging datasets for nonprogrammers.
Main Methods:
- Development of an automated tuning analysis tool (AUTOTUNE) specifically designed for subcellular compartments like dendritic spines.
- Implementation of routines for signal extraction and analysis from dendritic subregions and spines.
- Demonstration of the software's utility with demo analyses of dendritic imaging data from mouse V1 in vivo.
Main Results:
- AUTOTUNE offers a robust workflow for analyzing functional imaging data from neuronal dendrites.
- Key features include image registration, region segmentation, structural turnover detection, fluorescence transient extraction, signal smoothing, and response tuning analyses.
- The software was validated using imaging data from layer 2/3 pyramidal neurons in mouse V1.
Conclusions:
- AUTOTUNE is an open-source and extendable software solution for diverse functional synaptic imaging experiments.
- The software facilitates the functional characterization of dendritic spine activity, accelerating new functional studies.
- AUTOTUNE complements morphological studies and aids in understanding neural circuits in health and disease.
