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Installation

• Hardware and software requirements. Letswave can be used on any Windows, Mac or Linux computer running Matlab 2012 or later.
• Downloading and setting up the toolbox. The latest version of Letswave can be downloaded as an Archive from the NOCIONS Github repository.
• Updating the toolbox. The Letswave toolbox can be updated directly from the main user interface.
• Configuring the toolbox. The Graphical user interfaces can be optimised according to your OS, screen resolution and screen real-estate.

Graphical user interface and visualisation tools

• Graphical user interface. The Letswave graphical user interface is launched by typing ‘letswave’ in the Matlab command prompt.
• Multiviewers. A set of multi viewer functions can be used to visualize and compare the data contained in one or multiple dataset(s).
• Specific viewers. A set of specific visualisation tools.
• History. Browse the history of a dataset.

Scripts

• Scripts make it possible to apply a succession of operations to one or more datasets.

File

• Import signals
• Export signals
• File management

Edit

• Electrodes
• Tags
• Epoch data
• Properties

Events

• Browse and edit events
• Delete duplicate events
• Create events from level trigger
• Merge event codes and latencies

Pre-processing

• DC removal and linear detrend
• Reference
• Frequency filters
• Spatial filters (ICA)
• Epoch segmentation
• Baseline operations
• Artefact rejection and suppression
• Current source density (CSD)
• Frequency and time-frequency transforms
• Time-frequency filters
• Resample signals
• Arrange signals

Post-processing

• Average
• Single-trial analysis
• Math
• Source analysis (dipole fitting)
• Find peaks in waveforms
• Global explained variance

Statistics

• Compare datasets against a constant
• Compare two datasets
• Compare more than two datasets (ANOVA)
• Compare signal amplitude at event latencies
• Bootstrap test against a reference interval

Figures

• Waveforms figure creator
• Waveforms average figure creator
• Maps figure creator
• Wave scalp array figure creator
• Scalpmap time series figure creator
• Scalpmap SS-EP series figure creator
• Lissajous figure creator