Differences between revisions 4 and 5
⇤ ← Revision 4 as of 2008-05-09 11:08:45 →
Size: 2587
Editor: hih-kn-2301-01
Comment:
← Revision 5 as of 2008-05-13 10:28:57 → ⇥
Size: 2587
Editor: hih-kn-2301-01
Comment:
Deletions are marked like this. Additions are marked like this.
Line 7: Line 7:
<<TableOfContents(2)>> <<TableOfContents(3)>>

Documentation of nrec Parameters

Contents

  1. Data Acquisition
  2. Experiment file
  3. Eye position module
    1. Calibration
    2. Input hardware

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)