Response equipment

Equipment for registration of subject responses

Eye tracking.

  • For  eye tracking we use  an EyeLink 1000 binocular tracker from SR Research.  The current installation runs at a maximum of 1000 Hz, tracking both eyes binocular.
  • The eye tracker is typically controlled via Neurobs Presentation,   

Via Presentation you can access the eye tracker output in realtime.    The X, Y  and pupil diameter of each eye is also output into the MEG system analog channels and sampled side by side with the MEG data.

The calibration space of the eyetracker is 1920x1080, with 0,0 in the top left corner. 

The eyetracker settings are aligned to the projector, so that the projector ini-file uses the pixel space (1920x1080), standard visual size (72x44 cm) and distance (100 cm) of the projector.  

Further technical specifications for the equipment is found in the manual  here.

Psychophysiology

  • For psychophysiology measurements beyond ECG and EOG we use  an MP150 system from BioPac.  In  the current setup, we have modules for measurements of ECG, GSR, respiration and blood oxygenation.
  • BioPac output is typically recorded via BioPac's AcqKnowledge software, but is also output into the MEG system analog channels and sampled side by side with the MEG data.

Further information  is found here.