[Eeglablist] EEGLAB default colormap change

[Arnaud Delorme]

Dear all,

In the next version of EEGLAB (and currently in the EEGLAB develop branch), we are planning to retire the jet colormap and instead use the turbo colormap as default for scalp topographies and time-frequency plots. These are similar colormap (see pictures below).

Topoplot
https://sccn.ucsd.edu/eeglab/download/colormap.png

Time-frequency plot
https://sccn.ucsd.edu/eeglab/download/timefreq.png

The reason for this change is that the jet colormap is not perceptually accurate (i.e., it leads to falsely infer magnitude differences). The turbo colormap is a replacement for jet that is perceptually accurate. More information is available in the two reference papers below.

You will always be able to change the colormap in the icadefs.m option file, and revert to jet if this is your preference.

Let us know your thoughts,

Arno

Pernet CR, Madan CR. Data visualization for inference in tomographic brain imaging. Eur J Neurosci. 2020 Feb;51(3):695-705. doi: 10.1111/ejn.14430. Epub 2019 Jun 4. PMID: 31069859.
https://urldefense.com/v3/__https://onlinelibrary.wiley.com/doi/full/10.1111/ejn.14430__;!!Mih3wA!CoDMs8L6t4H4-S7PCXHJAm0LjH_OjiRDBPsLCvj0zLTUdZXZSziQzEJ9EAb8Rn5OjAm1S0nGMZaEh8ihvG4ArvT-$ 

Cooper PS, Baillet S, Maroun REK, Chong TT. Over the rainbow: Guidelines for meaningful use of colour maps in neurophysiology. Neuroimage. 2021 Dec 15;245:118628. doi: 10.1016/j.neuroimage.2021.118628. Epub 2021 Oct 9. PMID: 34637902.
https://urldefense.com/v3/__https://www.sciencedirect.com/science/article/pii/S1053811921009010?via*3Dihub__;JQ!!Mih3wA!CoDMs8L6t4H4-S7PCXHJAm0LjH_OjiRDBPsLCvj0zLTUdZXZSziQzEJ9EAb8Rn5OjAm1S0nGMZaEh8ihvK_-DFoO$