[Eeglablist] ERSP data export

[Clement Lee]

Hi Fran,

Did this script report negative or lower power values in previous versions
of EEGLAB and MATLAB? If not, the script may be working as intended, but
reporting in uV^2/Hz instead of dB.

Best,
Clement Lee
Applications Programmer
Swartz Center for Computational Neuroscience
Institute for Neural Computation, UC San Diego
858-822-7535


On Wed, Mar 4, 2020 at 10:36 AM Fran Copelli <fcopelli at ryerson.ca> wrote:

> Dear list,
>
> A past colleague of mine developed a script for exporting cluster data. For
> a given cluster, it exports power collapsed across a given time and
> frequency range for each component in said cluster, for each condition.
> You end up with a .csv like this:
> *CLUSTER 1*
> *Component, Condition 1, Condition 2, Condition 3*
> *1, power value, power value, power value,*
> *2, power value, power value, power value*
>
> *However,* this script was developed for older versions of EEGLab and
> MATLAB, and appears to no longer be working correctly. Despite an ERSP that
> appears to have desynchronization, the exported power values are never
> negative, and are usually outrageously high (i.e., 40).
>
> Is there a function in EEGLab to export data in this way? Or, can someone
> recommend a script/process that they use for this same analysis? For
> context, I am doing a mu suppression analysis.
>
> I can provide my colleague's script if required.
>
> Thank you!
>
> Fran
>
> SMART Lab, Psychology Department
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