EEG 32 channels actiCHamp for Skin Response GSR for Academic Research Proposals

EEG 32 channels actiCHamp for Skin Response GSR for Academic Research Proposals EEG 32 channels actiCHamp for Skin Response GSR for Academic Research Proposals

The actiCHamp/actiCHamp Plus is a modular, extensible amplifier system that allows the user to record peripheral signals via sensors from eight AUXClosed inputs. Up to 160 EEGClosed signals can be co-registered simultaneously with the AUX channels.

To display technical specifications for the AUX ports of the actiCHamp/actiCHamp Plus.
actiCHamp/actiCHamp Plus amplifier with the actiPOWER battery.
The GSR module is connected to one of the AUX ports.

acitCHamp is pictured, the setup is the same for actiCHamp Plus

GSR is a low frequency signal, therefore it can be acquired with the lowest sampling rate.

The lowest available sampling rate is sufficient to record the GSR signal. However, the sampling rate set in the workspace applies to all recorded signals. If GSR is recorded simultaneously with other signals, e.g. EEG, a higher sampling rate may be required depending on the specific application. If needed, downsampling can be easily applied to the GSR signal offline.

The correct physical channel number must be indicated in the column “Phys. Chn” of the channel table in the workspace. The AUX channels always correspond to the last 8 physical channels, therefore in the BrainVision Recorder workspace settings, if you have only one 32-channels module, the AUX channels will correspond to physical channels 33-40, if you have 2 modules, the AUX ports will be physical channels 65-72 and so on.

In order to set the correct units, gradient and offset in the channel table, check the box “Diff. Unit”, write “µS” as “Unit”, 25 as “Gradient” and 0 as “Offset”.

The other settings are dependent on your individual experimental requirements. For additional information about setting up a BrainVision Recorder workspace, please refer to the Recorder user manual.

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