Application of eye movement measuring system OBER 2 to medicine and technology

Ober, Józef; Hajda, Janusz; Loska, Jacek; Jamicki, Michal

doi:10.1117/12.280352

Cited by 22 publications

(6 citation statements)

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“…In visual experiments we used the infrared reflection-based eyetracker OBER-2 (Ober 1997). The goggles illuminate each eyeglobe with four adjacent spots of total power of 5 mW/cm 2 in infrared pulses (wavelength 940nm) lasting for 80μs repeated at the sampling frequency.…”

Section: Eyetracking Devicementioning

confidence: 99%

Assessment of electrocardiogram visual interpretation strategy based on scanpath analysis

Augustyniak

Tadeusiewicz

2006

Physiol. Meas.

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Abstract:The automated ECG interpretation systems are supposed to follow the human expert reasoning. Despite of well established standards, the visual interpretation strategy of the human is still undisclosed today. The paper presents a new approach to the interpretation process research based on eyetrack features captured from a human expert during biosignal visual inspection. This approach required a set of visual tasks consisting in ECG interpretation by volunteers of different degree of expertise. The recorded eyeglobe trajectories were analysed in context of medical data represented in the displayed ECG traces and revealed interesting information on diagnostic data distribution and principles of interpretation strategies. The scanpath-derived data make benefit of oculomotoric habits gathering in everyday practice, unconscious mutual perception-recognition interactions and are not affected by human memory or verbalization limits. For these reasons they provide more objective assessment than any other method willingly controlled by the human. Beside of new information about the ECG contents and quantitative description of medical data distribution, our experiment reveals some eyetrack parameters as distinctive for interpretation skills estimation.

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Section: Eyetracking Devicementioning

confidence: 99%

Assessment of electrocardiogram visual interpretation strategy based on scanpath analysis

Augustyniak

Tadeusiewicz

2006

Physiol. Meas.

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“…The principal difference with respect to other software packages is that our toolbox supports the infrared reflectionbased eyetracker OBER-2 [6] in its calibration and off-line analysis mode. The on-line analysis and interactive display is currently under development and will be added soon.…”

Section: A Metrological Principle Of the Ir-eyetrackermentioning

confidence: 99%

Complete Scanpaths Analysis Toolbox

Augustyniak¹,

Mikrut²

2006

2006 International Conference of the IEEE Engineering in Medicine and Biology Society

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This paper presents a complete open software environment for control, data processing and assessment of visual experiments. Visual experiments are widely used in research on human perception physiology and the results are applicable to various visual information-based man-machine interfacing, human-emulated automatic visual systems or scanpath-based learning of perceptual habits. The toolbox is designed for Matlab platform and supports infra-red reflection-based eyetracker in calibration and scanpath analysis modes. Toolbox procedures are organized in three layers: the lower one, communicating with the eyetracker output file, the middle detecting scanpath events on a physiological background and the one upper consisting of experiment schedule scripts, statistics and summaries. Several examples of visual experiments carried out with use of the presented toolbox complete the paper.

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“…We used the infrared reflection-based eyetracker (OBER-2) [5] capturing 2D trace of each eye at 750 Hz during the 8s long presentation of the ECG. The device uses total illumination power of 5 mW/cm 2 and provides the angular resolution of 0.02 deg.…”

Section: Eye Tracking Devicementioning

confidence: 99%