[Mne_analysis] after ICA, N100 disappear

Alexandre Gramfort alexandre.gramfort at telecom-paristech.fr
Thu Oct 20 13:37:28 EDT 2016
Search archives:

to me your N100 can disappear for 3 reasons:
- you rejected a good ica components
- you reduced too much the number of components and did not put back
small PCA components
- you applied a stronger high pass filter

HTH
Alex

On Thu, Oct 20, 2016 at 4:44 PM, Emanuela Liaci
<emanuela.liaci at gmail.com> wrote:
> Hi,
>
> At first I used IGOR pro for  EEG analysis, applying artefact rejection on
> my data. And looking at the grand mean, I could see the visual N100 response
> in each condition(my experimental task was visual).
>
> Then, in order to gain more trials I decided to analyse my data with your
> package in Python for EEG analysis, by applying ICA. But now when I look at
> the graphs of the grand mean but also at the individual level, the visual
> N100 response has completely disappeared.
>
> What happened? Is there an explanation? Many thanks
>
> Cheers,
> Emanuela Liaci
>
> _______________________________________________
> Mne_analysis mailing list
> Mne_analysis at nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis
>
>
> The information in this e-mail is intended only for the person to whom it is
> addressed. If you believe this e-mail was sent to you in error and the
> e-mail
> contains patient information, please contact the Partners Compliance
> HelpLine at
> http://www.partners.org/complianceline . If the e-mail was sent to you in
> error
> but does not contain patient information, please contact the sender and
> properly
> dispose of the e-mail.
>


More information about the Mne_analysis mailing list