Eye Tracking Systems

Camera based systems with 1250 frames per second

The video camera based eye tracking system ET-50 was developed by Thomas RECORDING GmbH in cooperation with the Department of Applied Physics and Neurophysics at the University of Marburg.

Key features:

  • Frame rate: 1250Hz, low signal latency
  • High precision & quality "Made in GERMANY" by Thomas RECORDING
  • Video Camera based, no head mounted components
  • Custom-made adaptions for a wide range of applications on request
  • Resolution 0.05°, Accuracy 0.083°
  • Detection Method: dark pupil detection
  • Analog & digital eye position output available
  • Infrared (IR) illumination
Framerate: 1250Hz
Resolution: 0.05°
Accuracy: 0.083°
Detection Method: Dark Pupil

Features

The system is constructed for neuro-scientific purposes and enables a laboratory to correlate the monkey’s eye position to the shown stimuli without any surgery and with sufficient accuracy for most applications.

With the given resolution of about 3 minutes visual angle and an accuracy of about ±5 minutes visual angle the eyetracker replaces usual eye-coil systems.

Publications

[1] Seo, H.; Barraclough, D.J.; Lee,D. Lateral intraparietal cortex and reinforcement learning during a mixed strategy game The Journal of Neuroscience, June 3, 2009, 29(22):7278-7289

[2] Seo, H. Lee, D. Behavioral and neural changes after gains and losses of conditioned reinforcers The Journal of Neuroscience, March 18, 2009, 29(11):3627-3641

[3] Womeldorf , T.; Anton-Erxleben, K.; Treue, S. Receptive Field Shift and shrinkage in macaque middle temporal  area through attentional gain modulation The Journal of Neuroscience, September 3, 2008, 28(36):8934-8944

[4] Katzner, S.; Busse, L.; Treue, S. Attention to the color of a moving stimulus modulates motion-signal processing in a macaque area MT: evidence for a unified attentional system Frontiers in Systems Neuroscience

[5] Seo, H.; Lee, D. Temporal Filtering of reward signals in the dorsal anterior cingulate cortex during mixed-strategy game The Journal of Neuroscience, August  1, 2007, 27(31):8366-8377

[6] Womelsdorf T., Anton-Erxleben K., Pieper F., Treue S. Dynamic shifts of visual receptive fields in cortical area MT by spatial attention Nature Neuroscience 9, 1156 - 1160 (01 Sep 2006) Article

[7] Lee D, Conroy ML, McGreevy BP, Barraclough DJ Reinforcement learning and decision making in mokeys during a competitve game Cognitive Brain Research, Vol. 22, No.1 (Dec 2004), pp.45-58

[8] Barraclough D.J., Conroy M.L. & Lee D. Prefrontal cortex and decision making in a mixed-strategy game Nature Neuroscience, Vol.7, No.4, April 2004

[9] Gail A., Brinksmeyer H.J., Eckhorn R. Simultaneous mapping of binocular and monocular receptive fields in awake monkeys for calibrating eye alignment in a dichoptical setup Journal of Neuroscience Methods 126 (2003) 41-56

[10] Westendorff S., Klaes C., Gail A. The Cortical Timeline for Deciding on Reach Motor Goals The Journal of Neuroscience April 14,2010 30(15):5426-5436

[11] Gail A., Klaes C., Westendorff S. Implementation of Spatial Transformation Rules for Goal-Directed Reaching via Gain Modulation in Monkey Parietal and Premotor Cortex The Journal of Neuroscience July 29,2009 29(30):9490-9499