Vertical lines on EEG using gUSBamp [solved]

This forum deals with BCI2000 configuration issues.
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pieterkubben
Posts: 22
Joined: 23 Jan 2012, 07:18

Vertical lines on EEG using gUSBamp [solved]

Post by pieterkubben » 18 Jun 2012, 18:15

Tried today connecting BCI2000 v 3.0.2 to a gUSBamp amplifier (actually 2 of them) and got the EEG as displayed on the attach. Some of the settings are visible as well.

Anyone familiar with this issue? I guess it has to do with the configuration.

Pieter
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Malconfigured EEG
Malconfigured EEG
Last edited by pieterkubben on 22 Jun 2012, 14:23, edited 1 time in total.
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gschalk
Posts: 615
Joined: 28 Jan 2003, 12:37

Re: Vertical lines on EEG using gUSBamp

Post by gschalk » 20 Jun 2012, 12:49

Do you have the same problem on individual amps?

Do you have the same problem using 256 Hz, and/or with the filters/notch turned off?

Gerv
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mellinger
Posts: 1341
Joined: 12 Feb 2003, 11:06

Re: Vertical lines on EEG using gUSBamp

Post by mellinger » 20 Jun 2012, 13:00

You need to avoid floating inputs at the amp. Connect both positive and negative inputs of unused channels to ground.

Juergen
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pieterkubben
Posts: 22
Joined: 23 Jan 2012, 07:18

Re: Vertical lines on EEG using gUSBamp

Post by pieterkubben » 22 Jun 2012, 14:23

Okay, yesterday we had another session with different parameters, and it worked. Seems to be a configuration-related issue... fortunately.

Thanks!
Pieter
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