[Eeglablist] Topographical Plotting of Continuous EEG Data

[Cedric Cannard]

Hi Hazmin,

What do you mean by "I have created studies", you should create only one study, with all the files, and update the fields to compare tasks/conditions. 

LIMO provides scalp topographies, and looks at all frequencies with robust statistics, which is much better than looking at bands separately. Do you mean that you weren't successful at using the LIMO analysis, or that the scalp topographies it provides are not corresponding to your needs?  

You can also try the EEGLAB STUDY statistics, following these steps from the tutorial: https://urldefense.com/v3/__https://eeglab.org/tutorials/10_Group_analysis/study_statistics.html*1-way-anova-on-erp-scalp-topographies__;Iw!!Mih3wA!DO_EZZmzkX8s8eR2rJgPFbc29EMqYJxnpjLiUFq6jPD6DNide0BjtQif9ksp7JBWtlq4CC_asYmCvdt7OYb9KX_Nmg$ 
This is for ERP but you can do the same for continuous data. Select your frequency band of interest instead of time range, and "Plot averaged over time/frequency". 


Cedric



------- Original Message -------
On Wednesday, April 5th, 2023 at 10:57 PM, Jazmin Morrone <jazmin.morrone at stmarys.ac.uk> wrote:


> Hello,
> 
> I am currently evaluating EEG data in a study design and am finding a bit of difficulty in plotting topographical maps for continuous data (i.e., within a defined frequency range).
> 
> I have initially segmented raw files into separated tasks and pre-processed these files individually (due to one of our team's other investigatory aims), which have saved in an EDF format.
> 
> I have since created studies for each of the tasks and have attempted to use the limo_toolbox to conduct group analysis. With this stated, I have unfortunately not been successful in achieving the desired plots, therefore am reaching out for guidance on achieving PSD topographical maps for groups of continuous EDF data.
> 
> I greatly appreciate the help!
> 
> Kind regards,
> 
> 
> 
> Jazmin Morrone
> 
> MRes - Cognitive Neuroscience
> 
> Lecturer and Technical Services
> 
> Faculty of Sports Allied Health and Performance Sciences
> 
> St Mary's University
> 
> Waldegrave Road
> 
> Twickenham
> 
> TW1 4SX
> 
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