[FieldTrip] Channels configuration from EEGLAB .set file is rotated in ft_topoplotER

[tibor.auer at gmail.com]

Hi Vera,

 

This is something I also noticed for other systems, as well. I simply
rotated it back according to some crude heuristic. See
automaticanalysis/eeglab2fieldtripER.m at master
<https://github.com/automaticanalysis/automaticanalysis/blob/master/extrafun
ctions/ft_mods/eeglab2fieldtripER.m> . automaticanalysis/automaticanalysis
(github.com), lines 122-145.

 

Kind regards,

Tibor 

 

Auer, Tibor M.D. Ph.D.

Research Fellow

School of Psychology, Faculty of Health and Medical Sciences

University of Surrey, Guildford GU2 7XH

 <mailto:T.Auer at surrey.ac.uk> T.Auer at surrey.ac.uk

 
<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftwitter.c
om%2FTiborAuer&data=02%7C01%7Ct.auer%40surrey.ac.uk%7Cdb32da458c424eedef2908
d7d4bd1421%7C6b902693107440aa9e21d89446a2ebb5%7C0%7C0%7C637211780868086968&s
data=zrT5%2FnGGsar14C3WartuU99tzsfLu30Peh9fuaqrAUg%3D&reserved=0> @TiborAuer

 

From: fieldtrip <fieldtrip-bounces at science.ru.nl> On Behalf Of Vera Gramigna
Sent: Thursday, February 18, 2021 5:44 PM
To: fieldtrip at science.ru.nl
Subject: [FieldTrip] Channels configuration from EEGLAB .set file is rotated
in ft_topoplotER

 

Hi,

I performed preprocessing steps of my eegdata (Epoc+) using EEGLAB.

As channel configurations, I considered a specific .ced file for Epoc+ and
in EEGLAB I visualized the correct position of sensors in 2D plot.

When I use FieldTrip for the spectral analysis, I imported the .set file.

cfg = [];

cfg.dataset     = 'MyDataset.set';

data_eeg        = ft_preprocessing(cfg)

 

When I visualize the result of ft_topoplotER, the configuration of sensors
is rotated.

In particular, the sensors O1 and O2 are on the left ear and nose on the
right ear.

When I fix this problem?

Thanks a lot for your help

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20210219/6702b435/attachment.htm>