[Eeglablist] How to choose proper High-pass (low-cutoff) filter?

[诸梦妍]

Dear eeglablist,

I would like to know whether there are any limitation or rules in filtering
EEG data, or if there are someone who could recommend some papers about how
high-pass filter change the data.

I have read some basic principles about how filter works, but still don't
know how to choose a proper High-pass parameter to remove artifacts without
distorting the data. I knew some researchers use 0.01Hz, some would
recommend  0.1, 0.5 or 1Hz and some recommend not using High-pass filter at
all.

The thing is, I found some participants' EEG waves in my experiments had
large amount of slow drift, which could be removed by a 0.3Hz filter.
However, I don't know whether that would distort the data greatly. What I
want to observe are P300, N400 and P600 components as well as some
sustained late negativity in ERP and also 3-70Hz in Time-Frequency domain.

Thanks for any information you may supply me with.

Zhu Mengyan
-- 
Mengyan Zhu
Psychology department, Peking University
Dormitory 2061, Building 48,No.5 Yiheyuan Road, Haidian District, Beijing
100871, China
 E-mail: bj12116 at gmail.com
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