[Eeglablist] ERP output time resolution

[Makoto Miyakoshi]

Dear Joon,

> We acquired data at 500 Hz.

So your data is sampled at every 2 ms.

> I was able to obtain a significance value at each time point (in every
millisecond resolution, not every 2ms).

This does not make sense to me. Is it because you downsampled data? What's
the interval between the timepoints now?

> I was able to find that spline interpolation was used in
"eeg_amplitudearea". Does this apply to the significance wave?

I have no idea. It is possible, but I don't see any necessity to apply
temporal interpolation there.

Makoto

On Mon, Aug 24, 2015 at 5:21 AM, Joon Jang <JYJang1 at sheffield.ac.uk> wrote:

> Dear EEGlab users,
>
> I am new to EEGlab. We acquired data at 500 Hz. When I plotted ERP wave
> forms in 2 conditions with a significance wave using EEGlab, I was able to
> obtain a significance value at each time point (in every millisecond
> resolution, not every 2ms).
>
> Theoretically, I should not be able to obtain this since it is not the
> increments of 2ms.
> I was able to find that spline interpolation was used in
> "eeg_amplitudearea". Does this apply to the significance wave?
>
> Thank you.
>
> Joon
>
>
>
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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