[Eeglablist] EEG amplifier and alternative input

[Jeff Eriksen]

Marc,

EEG recorded for ERPs is generally 0.1 - 100 Hz.
Human hearing is roughly 20-20,000 Hz.
Voice recording requires a substantial part of that, but I do not know
off-hand how high.
I would say you would probably get a poor voice recording, unless you have
higher end amplifiers that can sample at 5-10 KHz.

-Jeff Eriksen

-----Original Message-----
From: eeglablist-bounces at sccn.ucsd.edu
[mailto:eeglablist-bounces at sccn.ucsd.edu] On Behalf Of Marc
Sent: Tuesday, August 03, 2010 5:10 AM
To: eeglablist at sccn.ucsd.edu
Subject: [Eeglablist] EEG amplifier and alternative input

Hi.

This is not directly related to EEGLab. But I thought someone may be
able to give some pointers.

We're doing some experiments measuring scalp EEG of participants. One
of the variables we intend to record is the participant's voice reply.
We're wondering if it is possible to use the same EEG hardware
amplifier to record the voice reply? Have anyone tried that before?
That is, instead of connecting the electrodes to the one of the 64
channels of the amplifier, we connect a microphone to the input
channel. I assume we will be able to record as good a signal as any
audio amplifier? Is there any thing else to watch out for?

Thanks for any advise.

Marc.
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