Headstage 64 Electrical Stimulation

The following excerpt from the Headstage 64 example workflow demonstrates electrical stimulation by triggering a train of pulses following a press of the △ key on the breakout board.

The DigitalInput operator generates a sequence of DigitalInputDataFrames. Although the digital inputs are sampled at 4 Mhz, these data frames are only emitted when the port status changes (i.e., when a pin, button, or switch is toggled). In the Breakout Board example workflow, the DigitalInput's DeviceName property is set to "BreakoutBoard/DigitalInput". This links the DigitalInput operator to the corresponding configuration operator.

BreakoutButtonState is selected from the DigitalInputDataFrame. It is an enumerator with values that correspond to bit positions of the breakout board's digital port. When this type is connected to a HasFlags operator, the enumerated values appear in the HasFlags's Value property's dropdown menu. Because HasFlags's Value is set to "Triangle", its output is "True" when the selected BreakoutButtonState bit field contains the "Triangle" flag.

When the Headstage64ElectricalStimulatorTrigger operator receives a "True" value in its input sequence, a stimulus waveform is triggered. The waveform can be modified by editing the Headstage64ElectricalStimulatorTrig operator's properties.