Contributions:g.EstimSwitchingUnit
Location
http://www.bci2000.org/svn/trunk/src/private/SignalProcessing/g.EstimSwitchingUnit
Versioning
Author
Alexander Belsten (belsten@neurotechcenter.org)
Version History
- 2020/05/22: Initial release for the switching unit prototype
Source Code Revisions
- Initial development: 6125
- Known to compile under: 6177
- Broken since: --
Functional Description
This filter adds support for the g.tec g.Estim PRO Switching unit. This device is used in conjunction with a g.Estim and a g.tec amplifier. It allows for the channels the automatic switching of channels from a recording channel to a stimulating channel. The filter has been developed using:
g.Estim Switching Unit Prototype
Serial Number: SR-2019.10.01
API Version: 0.1.0537
Integration into BCI2000
Compile the filter by enabling BUILD_PRIVATE in your CMake configuration. Access to the private directory in the SVN is necessary.
Parameters
The g.EstimSwitchingUnit is configured in the filtering tab. The configurable parameters are:
EnableSU
This parameter enables the switching unit.
DeviceID
Index of device to connect to. Usually 0.
Trigger
There are two options for the trigger, a software trigger, and a digital trigger.
Software Trigger
Channel switching is triggered when the StimulusCode state meets the stimulus condition defined in the first row of the StimConfig parameter. Note: if only one state (one column) is defined in StimConfig, channel information configuration will not need to be re-uploaded to the device. This results in a dramatic decrease in latency of transition between recording to stimulating.
Digital Trigger
Channel switching is triggered by the digital in on the switching unit. Only one state (one column) can be defined in the StimConfig parameter to use the digital trigger. When the digital trigger occurs, the switching configuration for that one state will be applied.
StimConfig
This matrix configures channel routing. The first row labeled by StimulusCode is the channel routing condition. When StimulusCode is equal to this condition, the channels will be routed for stimulation. The Stim+ ch and Stim- ch nested lists define what channels should be routed to the positive side (anode) of the stimulation input and to the negative side (cathode) of stimulation input.