OBJECTIVE: The performance of a new video-based infrared eye tracker (IR) was compared to the magnetic search coil technique (SC). Since the IR offers interesting possibilities as a diagnostic tool in neuro-ophthalmology, it was investigated whether the new device has overcome shortcomings that were reported from former IR systems. METHODS: Horizontal saccades were recorded using the IR and the SC. The IR allowed eye movement recordings at different sampling rates ranging from 250 Hz to 1000 Hz while the SC recorded at 1000 Hz. RESULTS/ CONCLUSIONS: The results show that the IR and the SC were in good agreement and produced similar results. In contrast to other studies, the influence of the sampling rate of the IR was small. The saccade main-sequences did not show significant differences. The latency times observed for both systems were mainly in the short-latency range.
OBJECTIVE: The performance of a new video-based infrared eye tracker (IR) was compared to the magnetic search coil technique (SC). Since the IR offers interesting possibilities as a diagnostic tool in neuro-ophthalmology, it was investigated whether the new device has overcome shortcomings that were reported from former IR systems. METHODS: Horizontal saccades were recorded using the IR and the SC. The IR allowed eye movement recordings at different sampling rates ranging from 250 Hz to 1000 Hz while the SC recorded at 1000 Hz. RESULTS/ CONCLUSIONS: The results show that the IR and the SC were in good agreement and produced similar results. In contrast to other studies, the influence of the sampling rate of the IR was small. The saccade main-sequences did not show significant differences. The latency times observed for both systems were mainly in the short-latency range.
Authors: Esther A Pelzer; Barbara Dillenburger; Sophie Grundmann; Vladimir Iliaev; Sophie Aschenberg; Corina Melzer; Martin Hess; Gereon R Fink; Carsten Eggers; Marc Tittgemeyer; Lars Timmermann Journal: NPJ Parkinsons Dis Date: 2020-01-17
Authors: Tobias M Merz; Martina M Bosch; Daniel Barthelmes; Jacqueline Pichler; Urs Hefti; Kai-Uwe Schmitt; Konrad E Bloch; Otto D Schoch; Thomas Hess; Alexander J Turk; Urs Schwarz Journal: Eur J Appl Physiol Date: 2013-04-06 Impact factor: 3.078
Authors: Michael B McCamy; Jorge Otero-Millan; R John Leigh; Susan A King; Rosalyn M Schneider; Stephen L Macknik; Susana Martinez-Conde Journal: PLoS One Date: 2015-06-02 Impact factor: 3.240
Authors: Esther A Pelzer; Barbara Dillenburger; Sophie Grundmann; Vladimir Iliaev; Sophie Aschenberg; Corina Melzer; Martin Hess; Gereon R Fink; Carsten Eggers; Marc Tittgemeyer; Lars Timmermann Journal: NPJ Parkinsons Dis Date: 2020-01-17