[Eeglablist] How to interpolate channels in individual epochs

[John Johnson]

I would think any sort of (time) selective interpolation would have the 
potential of introducing bias into your results.
Have you looked at the component activations (Plot | Component 
activations (scroll)) to see if perhaps these artifacts are represented 
by one or two components?
Have you used [ASR 
(clean_rawdata)](https://sccn.ucsd.edu/wiki/Artifact_Subspace_Reconstruction_(ASR)) 
(as in [Makoto's preprocessing 
pipeline](https://sccn.ucsd.edu/wiki/Makoto's_preprocessing_pipeline)) 
to reduce non-stationary artifacts?

John T. Johnson
PhD Candidate - Cognitive Motor Control Laboratory
Lab TA NEURO 4001 Neuroscience Capstone
School of Biological Sciences
Georgia Institute of Technology
john.johnson at gatech.edu
he/him/his

On 14 Mar 2020, at 9:22, Sebastian Sauppe wrote:

> Dear EEGLAB list members,
>
> Is it possible to interpolate channels only in individual epochs or 
> for specified time intervals?
>
> It is often the case that after ICA etc. one has segments of the data 
> where one channel has artifacts in them. But in many cases one 
> doesn’t want to interpolate a channel for the whole data set because 
> of a few epochs and one also doesn’t want to exclude epochs because 
> of a single channel with artifacts (e.g. in high-density EEG).
>
> Does anyone of you know of a solution to this in EEGLAB?
>
> Best,
> Sebastian
>
> -----------
> Dr. Sebastian Sauppe
> Department of Comparative Language Science, University of Zurich
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