[Eeglablist] Baseline correction with resting state data

[Makoto Miyakoshi]

Dear Michelle,

Baseline correction can mean multiple things.
In the time-domain analysis such as ERP analysis, it means the DC level of
the time-domain signals are set to zero. In the time-frequency domain
analysis, this 'baseline correction' is done for every frequency bin.
EEGLAB subtracts mean-baseline values in dB, which means you are
calculating the rates of power changes relative to the baseline.

At least, applying a high-pass filter is most likely necessary, unless you
are thinking about conducting infraslow EEG analysis. Follow
Cedric's advice.

Makoto

On Mon, May 1, 2023 at 10:59 AM Michelle Lobermeier via eeglablist <
eeglablist at sccn.ucsd.edu> wrote:

> Hello everyone,
>
> I am currently working on completing my dissertation, and we are gathering
> resting state EEG data from 4- and 5-year-old children (2 minutes eyes
> open, 2 minutes eyes closed).  When working with resting state data like
> this in MatLab/EEGLab, is baseline correction and removal recommended? I
> know this is an important part of pre-processing with ERP data, but I am
> having trouble finding information about whether this should be done with
> continuous resting state data.
>
> Thank you in advance for any insight you can provide. I appreciate it!
>
> Best,
> Michelle Lobermeier
>
>
>
> --
> Michelle Lobermeier, M.S., TLLP
> Pronouns: she/her/hers
> Doctoral Fellow, Clinical Psychology
> Eastern Michigan University
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