Computes Imaginary Coherence between channels.

How it works

• Accepts channel selections (select channels before running the plugin), otherwise will use the current montage.
• Can be launched by selecting markers:
• Can be launched using the command line :

anywave --run imaginary-coherence --input_file <file> --low_freq 8 --high_freq 12 --fft_window 1  \ 
--fft_overlap 0.25 --output_file results.mat

Parameters

• low_freq: low frequency bin in Hz. Default value is 8Hz.
• high_freq: high frequency bin in Hz. Default value is 12Hz.
• fft_window: duration of the FFT window used in seconds. Default value is 1s.
• fft_overlap: duration of the FFT shift in seconds. Default is 0.25s.

When launched in GUI mode, the plugin allows to select the output file path to store results. By default a file results.mat will be created in the current data folder.

Result file

A MATLAB file containing the following variables:

• method: a string to mention the method.
• sampling_rate: data sampling rate in Hz
• high_freq: high freq parameter value
• low_freq: low freq parameter value
• fft_window: fft_window parameter value
• fft_overlap: fft_overlap parameter value
• electrode_names: cell array of strings containing the labels of channels
• coherence: nChannels x nChannels x nSections matrix containing the coherence values.
• sections: structure containing the section named in AnyWave and the starting and ending positions in seconds.