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   ID of channel for horizontal eye position.    ID of channel for horizontal eye position. Usually 0.
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   ID of channel for vertical eye position.    ID of channel for vertical eye position. Usually 1.

Documentation of nrec Parameters

Contents

  1. Data Acquisition
  2. Experiment file
  3. Eye position module

1. 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.

2. Experiment file

  •  Experiment file 

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

3. Eye position module

3.1. Calibration

  •  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.

3.2. Input hardware

  •  # 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. Usually 0.

  •  Y Channel ID 

    • ID of channel for vertical eye position. Usually 1.

... to be continued

nrec: ParameterExplanationNrec (last edited 2015-12-11 09:24:32 by FriedemannBunjes)