Documentation of nrec Parameters

Data Acquisition

sampling rate
- Acquired samples per second by the daq card.
SubdeviceID for AIn eye position recording (16ch)
- The ID of the analog input subdevice (find out via comedi_test -t info).
SubdeviceID for DIn spike recording (24ch)
- The ID of the digital input subdevice (find out via comedi_test -t info). If no spikes or comparable digital signals are to be recorded, set this value to -1.
SubdeviceID for other DIO (8ch)
- The ID of the digital in-/output subdevice (find out via comedi_test -t info). The trial trigger is on channel 0 output. The other channels may be used for response buttons, reward signals, LEDs and similar things.

Experiment file
- Path and filename of the last experiment configuration used. Usually this is not modified here.

Channel 0
- Currently used horizontal calibration coefficients. These are the 6 coefficients a,b,c,d,e,f in the voltage (x) to gaze_angle funtion:
  ganze_angle = a + b * x + c * y + d * x² + e * x * y + f * y².
  Usually this is not modified here.
Channel 1
- Currently used vertical calibration coefficients. These are the 6 coefficients a,b,c,d,e,f in the voltage (x) to gaze_angle funtion:
  ganze_angle = a + b * x + c * y + d * x² + e * x * y + f * y².
  Usually this is not modified here.
# Channels
- Number of channels used for eye position calibration. Use 1 for x-only mode or 2 for x-y-mode.
# Coefficient/channel
- Number of calibration coefficients per channel. Order of the polynomial in the above equations. Currently only a value of 6 is implemented.

# Channels
- Number of channels used for eye position measurement. Currently only a value of 2 is implemented.
  Usually this is not modified here.
Device ID
- Device ID for eye movement data acquisition. Usually 0.
Subevice ID
- Subdevice ID for eye movement data acquisition. Usually equals DAQ/SUBDEVICE_ID_AIN.
X Channel ID
- ID of channel for horizontal eye position.
Y Channel ID
- ID of channel for vertical eye position.

... to be continued