SigViewer is a powerful, cross-platform, open-source graphical application designed for viewing, scoring, and annotating biomedical signals. Primarily rooted in Brain-Computer Interface (BCI) and neuroinformatics research, it acts as a user-friendly standalone tool to analyze raw data time-series without needing a commercial math environment.
The application is hosted globally on the cbrnr SigViewer GitHub Repository and distributed across major open-source infrastructure networks like the NeuroDebian Package Index. 💻 Key Capabilities of SigViewer
Multi-Format Compatibility: Powered by the underlying libbiosig and libxdf standard C++ libraries, SigViewer seamlessly handles over 25 biosignal formats. This includes GDF, EDF, BDF, CNT (Neuroscan), BrainVision, BCI2000, and standard EEG/MEG formats.
Multimodal Integration: It visualizes multi-stream XDF (Extensible Data Format) files, making it highly useful for verifying real-time time-series data synced via Lab Streaming Layer (LSL) frameworks.
Scoring and Annotation: Researchers use it to select artifacts (e.g., eye blinks or muscle movements in an EEG) or append custom categorical event tags directly onto signal intervals.
Basic Processing Modules: Beyond simple viewing, it can calculate power spectral densities (PSD) and compute averages across specific epochs to isolate event-related potentials (ERPs). 🛠️ Tutorial: How to Set Up and Build SigViewer
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