[Eeglablist] question about pop_eegthresh function

[James Desjardins]

Hi Pan,

The size of the first (or smallest) dimension of EEG.icaweights will always indicate the number of components in a given data set. So, in your script you can use [1:min(size(EEG.icaweights))] for a generic "all components" elec_comp input to pop_eegthresh.

James Desjardins, MA
Electrophysiology Technologist
Cognitive and Affective Neuroscience Lab, Psychology Department
Jack and Nora Walker Centre for Lifespan Development Research
Brock University
500 Glenridge Ave.
St. Catharines, ON, Canada L2S 3A1
905-688-5550 x4676
--
"'Cause you never can tell What goes on down below!
"This pool might be bigger Than you or I know!"

McElligot's Pool
Dr.Seuss 1947
________________________________
From: eeglablist-bounces at sccn.ucsd.edu [eeglablist-bounces at sccn.ucsd.edu] on behalf of Liu Pan [pliu261 at gmail.com]
Sent: March-06-13 3:16 PM
To: eeglablist
Subject: [Eeglablist] question about pop_eegthresh function

Hi colleagues,

I'm using the pop_eegthresh function for epoch rejection based on component activities:

[EEG Indexes] = pop_eegthresh( INEEG, typerej, elec_comp, lowthresh, upthresh, starttime, endtime, superpose, reject)
in which elec_comp [e.g., 1:32] referes to the number of channels or components selected for epoch rejection.

I want to run the script on a batch of .set files which have different numbers of components. Since it would be time-consuming to adjust the values of elec_comp file by file, I'm wondering wether there is a default setting of elec_comp, which will automatically take ALL components into consideration for each file. I tried to leave the bracket blank but it turmed out to be a default of "0" (0 component was selected for rejection).

Thanks for your input! Pan





--
Liu Pan, PhD. Candidate
Neuropragmatics and Emotion Lab (Pell Lab)
School of Communication Sciences and Disorders
Faculty of Medicine, McGill University
Montreal, Canada

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