Differences between revisions 1 and 4 (spanning 3 versions)

Documentation of nrec Parameters

Contents

Data Acquisition
Experiment file
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)

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+== 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 ==

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

== Eye position module ==

=== 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:<<BR>> ganze_angle = a + b * x + c * y + d * x^2^ + e * x * y + f * y^2^.<<BR>>
   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:<<BR>> ganze_angle = a + b * x + c * y + d * x^2^ + e * x * y + f * y^2^.<<BR>> 
   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.

=== Input hardware ===

 * {{{ # Channels }}}
   Number of channels used for eye position measurement. Currently only a value of 2 is implemented.<<BR>>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}}}