[FieldTrip] question for using ft_timelockgrandaverage

[Herring, J.D. (Jim)]

Hi Anne,

 

Yes, ft_timelockgrandaverage takes this into account. This used to be a
problem in earlier versions of Fieldtrip (~ a year ago) but has been
fixed. If you want to make sure you can always specify cfg.keepindividual
= 'yes'; and see whether the channels are ordered correctly. Alternatively
you could replace the data for one channel in each subject with, for
example, ones and see whether ft_timelockgrandaverage produces that
channel with a mean of 1 with no variation as well.

 

Best,

 

Jim

 

From: fieldtrip-bounces at science.ru.nl
[mailto:fieldtrip-bounces at science.ru.nl] On Behalf Of van Hoogmoed, Anne H
- (annevanhoogmoed)
Sent: dinsdag 22 oktober 2013 1:00
To: fieldtrip at donders.ru.nl
Subject: [FieldTrip] question for using ft_timelockgrandaverage

 

Dear all,

 

I'm using ft_timelockgrandaverage to make a grand average of my ERP data.
However, the order of the channels is different for some people I want to
include in the average. Does ft_timelockgrandaverage take this into
account (i.e. does it average on channel name or on channel order)? Or do
the channels need to be ordered the same for each participant. And if so,
how should I do this?

 

Thanks for your help,

 

Anne

 

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