scholarly journals Eye Tracking—An Innovative Tool in Medical Parasitology

2021 ◽  
Vol 10 (13) ◽  
pp. 2989
Author(s):  
Przemysław Kołodziej ◽  
Wioletta Tuszyńska-Bogucka ◽  
Mariusz Dzieńkowski ◽  
Jacek Bogucki ◽  
Janusz Kocki ◽  
...  
Keyword(s):  
Eye Tracking ◽  
Eye Movement ◽  
Virtual Microscopy ◽  
Laboratory Medicine ◽  
Eye Tracker ◽  
Educational Training ◽  
Teaching Materials ◽  
Training Tool ◽  
Innovative Tool ◽  
Scanning Path

The innovative Eye Movement Modelling Examples (EMMEs) method can be used in medicine as an educational training tool for the assessment and verification of students and professionals. Our work was intended to analyse the possibility of using eye tracking tools to verify the skills and training of people engaged in laboratory medicine on the example of parasitological diagnostics. Professionally active laboratory diagnosticians working in a multi-profile laboratory (non-parasitological) (n = 16), laboratory diagnosticians no longer working in this profession (n = 10), and medical analyst students (n = 56), participated in the study. The studied group analysed microscopic images of parasitological preparations made with the cellSens Dimension Software (Olympus) system. Eye activity parameters were obtained using a stationary, video-based eye tracker Tobii TX300 which has a 3-ms temporal resolution. Eye movement activity parameters were analysed along with time parameters. The results of our studies have shown that the eye tracking method is a valuable tool for the analysis of parasitological preparations. Detailed quantitative and qualitative analysis confirmed that the EMMEs method may facilitate learning of the correct microscopic image scanning path. The analysis of the results of our studies allows us to conclude that the EMMEs method may be a valuable tool in the preparation of teaching materials in virtual microscopy. These teaching materials generated with the use of eye tracking, prepared by experienced professionals in the field of laboratory medicine, can be used during various training, simulations and courses in medical parasitology and contribute to the verification of education results, professional skills, and elimination of errors in parasitological diagnostics.

scholarly journals A Fast and Effective System for Analysis of Optokinetic Waveforms with a Low-Cost Eye Tracking Device

Healthcare ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 10
Author(s):  
Chong-Bin Tsai ◽  
Wei-Yu Hung ◽  
Wei-Yen Hsu
Keyword(s):  
Eye Movements ◽  
Eye Tracking ◽  
Eye Movement ◽  
Low Cost ◽  
Saccadic Eye Movements ◽  
Slow Phase ◽  
Eye Tracker ◽  
Effective System ◽  
Tracking Device ◽  
Traditional Approaches

Optokinetic nystagmus (OKN) is an involuntary eye movement induced by motion of a large proportion of the visual field. It consists of a “slow phase (SP)” with eye movements in the same direction as the movement of the pattern and a “fast phase (FP)” with saccadic eye movements in the opposite direction. Study of OKN can reveal valuable information in ophthalmology, neurology and psychology. However, the current commercially available high-resolution and research-grade eye tracker is usually expensive. Methods & Results: We developed a novel fast and effective system combined with a low-cost eye tracking device to accurately quantitatively measure OKN eye movement. Conclusions: The experimental results indicate that the proposed method achieves fast and promising results in comparisons with several traditional approaches.

Modern Furniture Color Image Based on Eye Tracking

2012 ◽  
Vol 157-158 ◽  
pp. 410-414 ◽  
Author(s):  
Ji Feng Xu ◽  
Han Ning Zhang
Keyword(s):  
Eye Tracking ◽  
Eye Movement ◽  
Color Image ◽  
Vision System ◽  
Human Vision ◽  
Relative Importance ◽  
Human Vision System ◽  
Eye Tracker ◽  
Color Features ◽  
The Relationship

The relationship between modern furniture color image and eye tracking has been of interest to academics and practitioners for many years. We propose and develop a new view and method exploring these connections, utilizing data from a survey of 31 testees’ eye tracking observed value. Using Tobii X120 eye tracker to analyze eye movement to furniture samples in different hue and tones colors, we highlight the relative importance of the effect of furniture color on human vision system and show that the connections between furniture color features with color image.

scholarly journals The Potential of Using an Eye Tracker in Architectural Education: Three Perspectives for Ordinary Users, Students and Lecturers

Buildings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 245
Author(s):  
Marta Alina Rusnak ◽  
Mateusz Rabiega
Keyword(s):  
Eye Tracking ◽  
Eye Movement ◽  
Teaching Methods ◽  
Architectural Education ◽  
Eye Tracker ◽  
Professional Skills ◽  
Wide Range ◽  
Professional Perception

The aim of this paper is to discuss the potential of eye trackers as tools providing diversified support for the architectural education of future designers. The possibility to track eye movement guaranteed by this group of devices enables an extension of knowledge on the non-professional perception of architectural creations. It also allows people to monitor progress while learning and verify a project’s assumptions as well as provide lecturers with an opportunity to optimize didactic methods. The paper includes authors’ ideas for modifications of teaching methods applied at technical universities. It is a result of an analysis of research related to the perception of urban designs and architectural objects—research during which noticeable differences were observed between how experts and non-professionals perceive these structures. What also contributed to the contents of this paper was a comprehension of the wide range of eye tracking studies examining the level of acquisition of specialist professional skills. The presented ideas are also based on the analysis and adaptation of eye-tracking research conducted by scientists within other areas of life.

scholarly journals Is the eye-movement field confused about fixations and saccades? A survey among 124 researchers

2018 ◽  
Vol 5 (8) ◽  
pp. 180502 ◽  
Author(s):  
Roy S. Hessels ◽  
Diederick C. Niehorster ◽  
Marcus Nyström ◽  
Richard Andersson ◽  
Ignace T. C. Hooge
Keyword(s):  
Eye Movements ◽  
Eye Tracking ◽  
Coordinate System ◽  
Eye Movement ◽  
Eye Tracker ◽  
New Methods ◽  
Research Fields ◽  
Wide Range ◽  
Movement Field ◽  
Mobile Eye Tracking

Eye movements have been extensively studied in a wide range of research fields. While new methods such as mobile eye tracking and eye tracking in virtual/augmented realities are emerging quickly, the eye-movement terminology has scarcely been revised. We assert that this may cause confusion about two of the main concepts: fixations and saccades. In this study, we assessed the definitions of fixations and saccades held in the eye-movement field, by surveying 124 eye-movement researchers. These eye-movement researchers held a variety of definitions of fixations and saccades, of which the breadth seems even wider than what is reported in the literature. Moreover, these definitions did not seem to be related to researcher background or experience. We urge researchers to make their definitions more explicit by specifying all the relevant components of the eye movement under investigation: (i) the oculomotor component: e.g. whether the eye moves slow or fast; (ii) the functional component: what purposes does the eye movement (or lack thereof) serve; (iii) the coordinate system used: relative to what does the eye move; (iv) the computational definition: how is the event represented in the eye-tracker signal. This should enable eye-movement researchers from different fields to have a discussion without misunderstandings.

scholarly journals STUDENTS’ ABILITY TO WORK WITH GRAPHS IN PHYSICS STUDIES RELATED TO THREE TYPICAL STUDENT GROUPS

2020 ◽  
Vol 19 (2) ◽  
pp. 298-316 ◽  
Author(s):  
Jana Skrabankova ◽  
Stanislav Popelka ◽  
Marketa Beitlova
Keyword(s):  
Eye Tracking ◽  
Eye Movement ◽  
Data Interpretation ◽  
Gifted Children ◽  
Eye Tracker ◽  
School Students ◽  
Mathematical Functions ◽  
Student Groups ◽  
Movement Data ◽  
Graph Reading

Graphs are often used to represent mathematical functions, to illustrate data from social and natural sciences, or to specify scientific theories. With increasing emphasis on the development of scientific research skills, the work with graphs and data interpretation are gaining in importance. The research involved an eye-tracking experiment conducted to evaluate student work with graphs in physics. Eye-movement data were recorded using the GazePoint eye-tracker. A total of 40 third-year grammar school students participated in the research. These students were allocated into three groups by a physics teacher. These groups were called PLUS, AVERAGE and MINUS. The PLUS group showed excellent results in education and included gifted physics students. The MINUS group was composed of the opposite end of this cognitive spectrum, whose members made the most mistakes in graph reading. The aim of the experiment was to find the differences between students allocated to these three groups and to evaluate whether the allocation based on the teacher’s experience, long-term observations and the students’ previous achievements was sufficient. The results showed that students from all three groups had problems with reading graphs in physics. According to the eye-movement data, several students who had been incorrectly assigned to groups were identified. Keywords: education in physics, gifted children, graph, eye-tracking, experimental study.

scholarly journals Eye-tracking-aided characterization of saccades and antisaccades in SYNE1 ataxia patients: a pilot study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Laszlo Szpisjak ◽  
Gabor Szaraz ◽  
Andras Salamon ◽  
Viola L. Nemeth ◽  
Noemi Szepfalusi ◽  
...  
Keyword(s):  
Working Memory ◽  
Eye Tracking ◽  
Eye Movement ◽  
Friedreich Ataxia ◽  
Inverse Correlation ◽  
Compound Heterozygous ◽  
Healthy Controls ◽  
Eye Tracker ◽  
Wide Range ◽  
Characteristic Features

Abstract Background SYNE1 ataxia is an autosomal recessive hereditary condition, the main characteristic features of which are gait and limb ataxia and cerebellar dysarthria. Reports have revealed that the clinical phenotype of SYNE1 ataxia is more complex than the first published cases with pure cerebellar signs indicated. The aim of this study was to characterize eye movement alterations in the first diagnosed Hungarian SYNE1 ataxia patients. Results Saccades and antisaccades were examined with an eye tracker device in 3 SYNE1 (one patient has two frameshift mutations [c.8515_8516insA, p.Met2839Asnfs*53 and c.11594_11595insG, p.Glu3866*] in a compound heterozygous state, whereas two subjects have a splicing variant [c.23146-2A > G] in a homozygous state), 6 Friedreich ataxia (FA) patients and 12 healthy controls. Besides that, detailed clinical phenotyping and comprehensive neuropsychological assessment were carried out in all patients with ataxia. In addition to the characteristic cerebellar alterations, pyramidal signs and polyneuropathy were observed at least in 2 SYNE1 ataxia patients, for which no other underlying reason was found. The eye tracking assessment revealed hypometric saccades in the longer amplitude (18.4°) saccadic paradigm in all SYNE1 patients, whereas 2 out of 3 SYNE1 subjects performed slow saccades as well. In the antisaccade task, higher incorrect ratios of antisaccades were demonstrated in SYNE1 patients compared to healthy controls, showing inverse correlation with working memory test results. The corresponding data of FA patients was dispersed over a wide range, partially overlapping with control data. Conclusions The current study draws attention to the presence of eye movement disorders in patients with SYNE1 ataxia and demonstrates that alterations in the antisaccade paradigm may be related to working memory deficits.

scholarly journals Eye-tracking-aided Characterization of Saccades and Antisaccades in SYNE1 Ataxia Patients – A Pilot Study

2020 ◽  
Author(s):  
Laszlo Szpisjak ◽  
Gabor Szaraz ◽  
Andras Salamon ◽  
Viola L. Nemeth ◽  
Noemi Szepfalusi ◽  
...  
Keyword(s):  
Working Memory ◽  
Eye Tracking ◽  
Eye Movement ◽  
Friedreich Ataxia ◽  
Inverse Correlation ◽  
Compound Heterozygous ◽  
Healthy Controls ◽  
Eye Tracker ◽  
Wide Range ◽  
Characteristic Features

Abstract BackgroundSYNE1 ataxia is an autosomal recessive hereditary condition, the main characteristic features of which are gait and limb ataxia and cerebellar dysarthria. Previous reports revealed that the clinical phenotype of SYNE1 ataxia is more complex than the first published cases with pure cerebellar signs. The aim of this study was to characterize the eye movement alterations of the first diagnosed Hungarian SYNE1 ataxia patients.ResultsSaccades and antisaccades were examined with eye tracker device in 3 SYNE1 (one patient has two frameshift mutations [c.8515_8516insA, p.Met2839Asnfs*53 and c.11594_11595insG, p.Glu3866*] in compound heterozygous state, whereas two subjects have a splicing variant [c.23146-2A>G] in homozygous state), 6 Friedreich ataxia (FA) patients and 12 healthy controls. Besides that, detailed clinical phenotyping and comprehensive neuropsychological assessment were implemented as well in all patients with ataxia.In addition to the characteristic cerebellar alterations, pyramidal signs and polyneuropathy were observed at least in 2 SYNE1 ataxia patients without any other underlying reason. The eye tracking assessment revealed hypometric saccades in the longer amplitude (18.4°) saccadic paradigm in all SYNE1 patients, whereas 2 out of 3 SYNE1 subjects performed slow saccades as well. In the antisaccade task, higher incorrect ratio of antisaccades were demonstrated in SYNE1 patients compared to healthy controls, showing inverse correlation with working memory test results. The corresponding data of FA patients dispersed in a wide range partially overlapping with control data.ConclusionsThe current study draws attention to the presence of eye movement disorders in patients with SYNE1 ataxia and demonstrates that alterations in the antisaccade paradigm may be related to working memory deficits.

scholarly journals Fixation Duration and Pupil Size as Diagnostic Tools in Parkinson’s Disease

2021 ◽  
pp. 1-11
Author(s):  
Panagiota Tsitsi ◽  
Mattias Nilsson Benfatto ◽  
Gustaf Öqvist Seimyr ◽  
Olof Larsson ◽  
Prof Per Svenningsson ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Eye Movements ◽  
Eye Tracking ◽  
Eye Movement ◽  
Pupil Size ◽  
Clinical Investigation ◽  
Sampling Rate ◽  
Diagnostic Tools ◽  
Eye Tracker

Background: Visual and oculomotor problems are very common in Parkinson’s disease (PD) and by using eye-tracking such problems could be characterized in more detail. However, eye-tracking is not part of the routine clinical investigation of parkinsonism. Objective: To evaluate gaze stability and pupil size in stable light conditions, as well as eye movements during sustained fixation in a population of PD patients and healthy controls (HC). Methods: In total, 50 PD patients (66% males) with unilateral to mild-to-moderate disease (Hoehn & Yahr 1– 3, Schwab and England 70– 90% ) and 43 HC (37% males) were included in the study. Eye movements were recorded with Tobii Pro Spectrum, a screen-based eye tracker with a sampling rate of 1200 Hz. Logistic regression analysis was applied to investigate the strength of association of eye-movement measures with diagnosis. Results: Median pupil size (OR 0.811; 95% CI 0.666– 0.987; p = 0.037) and longest fixation period (OR 0.798; 95% CI 0.691-0.921; p = 0.002), were the eye-movement parameters that were independently associated with diagnosis, after adjustment for sex (OR 4.35; 95% CI 1.516– 12.483; p = 0.006) and visuospatial/executive score in Montreal Cognitive Assessment (OR 0.422; 95% CI 0.233– 0.764; p = 0.004). The area under the ROC curve was determined to 0.817; 95% (CI) 0.732– 0.901. Conclusion: Eye-tracking based measurements of gaze fixation and pupil reaction may be useful biomarkers of PD diagnosis. However, larger studies of eye-tracking parameters integrated into the screening of patients with suspected PD are necessary, to further investigate and confirm their diagnostic value.

scholarly journals Characterizing gaze position signals and synthesizing noise during fixations in eye-tracking data

2020 ◽  
Vol 52 (6) ◽  
pp. 2515-2534 ◽  
Author(s):  
Diederick C. Niehorster ◽  
Raimondas Zemblys ◽  
Tanya Beelders ◽  
Kenneth Holmqvist
Keyword(s):  
Eye Tracking ◽  
Data Quality ◽  
Eye Movement ◽  
Movement Analysis ◽  
Tracking Data ◽  
Eye Tracker ◽  
Eye Movement Analysis ◽  
Analysis Methods ◽  
Signal Type ◽  
Gaze Position

AbstractThe magnitude of variation in the gaze position signals recorded by an eye tracker, also known as its precision, is an important aspect of an eye tracker’s data quality. However, data quality of eye-tracking signals is still poorly understood. In this paper, we therefore investigate the following: (1) How do the various available measures characterizing eye-tracking data during fixation relate to each other? (2) How are they influenced by signal type? (3) What type of noise should be used to augment eye-tracking data when evaluating eye-movement analysis methods? To support our analysis, this paper presents new measures to characterize signal type and signal magnitude based on RMS-S2S and STD, two established measures of precision. Simulations are performed to investigate how each of these measures depends on the number of gaze position samples over which they are calculated, and to reveal how RMS-S2S and STD relate to each other and to measures characterizing the temporal spectrum composition of the recorded gaze position signal. Further empirical investigations were performed using gaze position data recorded with five eye trackers from human and artificial eyes. We found that although the examined eye trackers produce gaze position signals with different characteristics, the relations between precision measures derived from simulations are borne out by the data. We furthermore conclude that data with a range of signal type values should be used to assess the robustness of eye-movement analysis methods. We present a method for generating artificial eye-tracker noise of any signal type and magnitude.

scholarly journals On the Structure of Measurement Noise in Eye-Tracking

2012 ◽  
Vol 5 (4) ◽  
Author(s):  
Charles A. Coey ◽  
Sebastian Wallot ◽  
Michael J. Richardson ◽  
Guy Van Orden
Keyword(s):  
Eye Tracking ◽  
Eye Movement ◽  
Fractal Structure ◽  
Past Research ◽  
Measurement Noise ◽  
Eye Tracker ◽  
Current Experiment ◽  
Movement Variability ◽  
Measurement Variability ◽  
Structure Measurement

Past research has discovered fractal structure in eye movement variability and interpreted this result as having theoretical ramifications. No research has, however, investigated how properties of the eye-tracking instrument might affect the structure of measurement varia-bility. The current experiment employed fractal and multifractal methods to investigate whether an eye-tracker produced intrinsic random variation and how features of the data recording procedure affected the structure measurement variability. The results of this experiment revealed that the structure of variation from a fake eye was indeed random and uncorrelated in contrast to the fractal structure from a fixated, real human eye. Moreover, the results demonstrated that data-averaging generally changes the structure of variation, introducing spurious structure into eye movement variability.

Sign in / Sign up

Export Citation Format

Share Document