WormRuler

WormRuler quantifies body length changes of Caenorhabditis elegans from video recordings to link neuronal or muscular manipulations, including optogenetic activation of channelrhodopsins such as ChrimsonSA in GABAergic motor neurons, with measurable physical responses.

Key Features:

• Integrated video processing and quantitative analysis: Combines video processing with data analysis to extract and quantify body length measurements from worm recordings.
• Optogenetic application support: Analyzes outcomes of optogenetic manipulations, including activation or inhibition of neurons expressing channelrhodopsins.
• ChrimsonSA characterization: Enables assessment of the super red-shifted channelrhodopsin variant ChrimsonSA, including depolarization of GABAergic motor neurons and consequent elongation.
• Quantitative neuronal transmission readout: Measures the magnitude of body length changes to provide quantitative insights into neuronal transmission strength.
• Real-time and recorded footage analysis: Supports monitoring and measurement from real-time streams or recorded video files.

Scientific Applications:

• Optogenetic functional studies: Investigate functional consequences of optogenetic activation or inhibition of specific neurons in C. elegans.
• Physiological quantification: Quantify body length elongation as a physiological readout of neuronal activity and transmission efficacy.
• Tool characterization: Characterize novel optogenetic tools such as ChrimsonSA by observing their effects on neural circuits and resultant phenotypic changes.

Methodology:

Performs video analysis to monitor and measure C. elegans body length from real-time streams or recorded footage and integrates video processing with data analysis to quantify length changes.