Letswave 4 - Updates
Fixed a bug that affected the results obtained using the "Divide A/B" option.
The module can be used to "reconstruct" a bad channel using neighbouring electrodes.
Select the channel to replace using the left listbox.
Select the channels that should be used to reconstruct the "bad channel".
The reconstruction is performed by averaging the signals recorded at the different channels selected for reconstruction.
Fixed a bug affecting the ICA modules.
In very rare instances, an overflow could occur, leading to mistakes when applying the mixing/unmixing matrices
This module allows you to "glance", within a single figure, at all the data contained within a given dataset, across all channels and epochs.
The module is very useful to identify misbehaving channels, or artefacted epochs.
The module generates a color matrix as follows.
- epochs are displayed on the x-axis
- channels are displayed on the y-axis
- each pixel of the 2D matrix (epochs x channels) represents the absolute maximum of the amplitude at x=epoch and y=channel.
Noisy channels (i.e. channels with abnormally high amplitude values) will appear as a horizontal line within the matrix.
Artefacted epochs (i.e. epochs with abnormally high absolute amplitude values) will appear as a vertical line within the matrix.
The content of the matrix can be adjusted, by selecting a range of epochs and channels using the "channels" and "epochs" listboxes.
Once the range of epochs and channels has been selected, click the "Generate" button to generate a new matrix.
Several bugs fixed in the module preventing to use the "fixed epochs" and "fixed channels" options.
Fixed a small bug in the chunk epochs module
Fixed a major bug in the Matlab inverse FFT module.
Fixed a major bug in the export Matlab module (affecting datafiles consisting of complex numbers).
Fixed the scaling issue in the Transform FFT spectrum module
Generate topographical maps of the scalp topography of individual peaks across epochs.
Fixed a bug preventing the display of files containing zero-valued matrices.
Added the possibility to compute z-scores.