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1
Content available remote Saccadometry and movement inhibition
100%
Poitou T. , Pouget P.
Biocybernetics and Biomedical Engineering
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2012
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tom Vol. 32, no. 2
33-47
EN
To reveal some functional constraints of the saccade inhibitory neuronal circuits, we investigated the influence of response monitoring in human. The subjects were instructed to perform a stop signal task in which the probability of stop trial occurrence was manipulated. The purpose of the work was to evaluate the time course necessary to adapt the behavior to changes in the occurrence of stop signal. Our results show that humans are capable to spatially monitor the relative probability event of stopping and to finely and quickly modulate their ability to inhibit a response. These results have important consequence to apprehend pathologies in which, an inaccurate control of inhibitory process results in a loss of fundamental capability of behavioral adaptation.
2
Content available Using Eye-Tracking Technology for the Analysis of Students' Subjective Views on Usefulness of Chosen Physics Formulas
88%
PĘCZKOWSKI P. , BŁASIAK W.
Edukacja-Technika-Informatyka
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2017
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tom 8
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nr 4
192-200
EN
This paper is the second part of research concerning students' view on usefulness of physics formulas. In the first part we examined subjective students' opinions on the usefulness of selected physics formulas from the school curriculum. No we concentrated on eye-tracking experiments. Students have assessed 16 of the most important physics formulas, chosen by physics teachers. For deeper understanding of student's choices on eye-tracking has been conducted. For 52 students divided on two groups: not participating in school competitions in physics and other natural sciences named “ordinary students” and participating in these competitions named “extraordinary students”, a relationship was observed between their eyes’ fixation time (divided into Area of Interest) on 16 displayed formulas and the frequency of recognizing these as useful. We compared also saccade duration time between these two groups of students. Physics contest winners found over 60% of these formulas useful, whereas the average students’ result was less than 30%. We observed a positive correlation between the number of eye-fixations on a given formula and the frequency of selection by the students as useful. Students that showed more interest in the selected subjects also perceived the areas of study presented by them to be much more useful to the society. It has also been concluded that the intention of choosing one’s profession within the area of a given subject depends on one’s interest in the subject.
3
Content available remote Electrovestibulography (EVestG) application for measuring vestibular response to horizontal pursuit and saccadic eye movements
88%
Ashiri M. , Lithgow B. , Suleiman A. , Mansouri B. , Moussavi Z.
Biocybernetics and Biomedical Engineering
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2021
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tom Vol. 41, no. 2
527--539
EN
Vestibular effects linked to eye movements have been extensively investigated, however, the effect of eye movements on the vestibular is relatively unknown. In this study, vestibular responses to horizontal pursuit and saccadic eye movements were examined in healthy individuals. Visual stimuli were presented to nineteen participants (27.7 ± 5.74 (SD) years, 11 female) using a virtual reality headset whilst the vestibular responses were simultaneously recorded using Electrovestibulography (EVestG). The average field potentials (FP) of three segments 1) prior to (Pre-Background), 2) during (Movement), and 3) after ceasing the visual stimulus (Post-Background) were extracted and the action potential (AP) area used as one feature. Both pursuit and saccadic eye movements resulted in a smaller average AP area during the Movement compared to Pre-Background (P = 0.002). Pursuit and saccadic eye movements also resulted in significantly longer time intervals between the low frequency (approximately 10 Hz) modulations of FPs detected during Movement compared to the Pre-Background (P≤ 0.001). Moreover, a comparison between rightward and leftward saccades indicated no significant difference between the two directions for the FP and time interval features (P > 0.37). These findings suggest that pursuit and saccade eye movements inhibit the activity of both the central (postulated efferent pathways) and peripheral (afferent) vestibular system. We hypothesize that the purpose of this vestibular inhibition is to limit the vestibulo-ocular reflex and optokinetic response. Additionally, the insensitivity of the vestibular system to the saccade directions with a stationary head provides anecdotal evidence on the bilateral efferent projections to the vestibular afferent and hair cells.
4
Content available Bayesian model for multimodal sensory information fusion in humanoid
88%
Wong W. K. , Loo L. C. , Neoh T. M. , Liew Y. W. , Lee E. K.
Journal of Automation Mobile Robotics and Intelligent Systems
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2011
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tom Vol. 5, No. 1
16-22
EN
In this paper, the Bayesian model for bimodal sensory information fusion is presented. It is a simple and biological plausible model used to model the sensory fusion in human’s brain. It is adopted into humanoid robot to fuse the spatial information gained from analyzing auditory and visual input, aiming to increase the accuracy of object localization. Bayesian fusion model requires prior knowledge on weights for sensory systems. These weights can be determined based on standard deviation (SD) of unimodal localization error obtained in experiments. The performance of auditory and visual localization was tested under two conditions: fixation and saccade. The experiment result shows that Bayesian model did improve the accuracy of object localization. However, the fused position of the object is not accurate when both of the sensory systems were bias towards the same direction.
5
Content available Parametry okoruchowe ucznia szybko czytającego
75%
Andrychowicz-Trojanowska A.
Applied Linguistics Papers
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2018
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nr 25/3
89-105
EN
The article, being a continuation of the theme, deals with speed reading from the point of view of eye-tracking research. The aim of the article is to present the eye-tracking results of two speed reading secondary school students who took part in the eye-tracking study aimed at analyzing the way Polish secondary school students work with the English textbook material. The presentation of their results bases on fixations and saccades and is contrasted with the results of other non-speed reading students to check if there are any significant differences between the representatives of both these groups of students.
6
Content available Basic terminology of eye-tracking research
75%
Andrychowicz-Trojanowska A.
Applied Linguistics Papers
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2018
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nr 25/2
123-132
EN
The article is aimed at making the reader familiar with the basics of eye tracking as well as its terminology and at making them aware of the fact that eye-tracking supported linguistic and glottodidactic research, being conducted in Poland, is getting more and more popular. The article gives basic information about eye tracking and two most crucial eye movements, i.e. fixations and saccades. It also lists the most important academic research centers in Poland that conduct linguistic research with the help of eye tracking. The next, and the most important, part of the article is a short characteristics of the chosen eyetracking parameters that are commonly used in different types of eye-tracking data analysis. They were chosen on the basis of the author’s own research experience in the field of experimental eye-tracking glottodidactics.
7
Poszukiwanie obiektywnych ilościowych parametrów opisujących wpływ pola elektromagnetycznego na organizm człowieka
63%
Kanclerz G. , Popielak J. , Sołdaj U. , Lefek S. , Kacprzyk A. , Rok T. , Pawlak R. , Tatoń G.
Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne
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2022
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tom nr 4
628--630
PL
Pola elektromagnetyczne obecne w otaczającym nas środowisku, prawdopodobnie nie pozostają obojętne dla naszego zdrowia. Ilościowy pomiar wpływu pola elektromagnetycznego na podstawie zmian w funkcjonowaniu czy morfologii ciała człowieka nie był do tej pory możliwy ze względu na brak miarodajnych metod. Potencjalnym narzędziem mogącym służyć do pomiaru efektów promieniowania elektromagnetycznego może być sakadometr.
EN
Electromagnetic fields, although present in our environment, are possibly not indifferent to our health. Quantitative measurement of the effect of electromagnetic radiation on the basis of changes in the functioning or morphology of the human body has not been possible so far due to the lack of reliable methods. A potential tool that can be used to measure the effects of electromagnetic radiation may be the saccadometer.
8
Content available remote Saccadometry and LATER model shed light on brain plasticity in aging
51%
Coubard O. A.
Biocybernetics and Biomedical Engineering
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2013
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tom Vol. 33, no. 2
125--127
EN
As frequency of falls increases in older adults, understanding how motor training programs counteract motor decline is a challenging issue. This study examined ocular saccades to test the effects of fall prevention (FP) on central motor control of older fallers. Saccades were recorded using a saccadometer in twelve participants aged 64–91 years before and after 2.5-month training in FP. We performed LATER analysis enabling us to examine the changes in motor control. FP decreased saccade latency and increased left-right symmetry of motor responses. LATER analysis showed that FP modulated decisional thresholds extending our knowledge of FP influence on motor control.
9
Content available remote Direction-dependent saccadic waveform asymmetry
51%
Walecki P. , Lasoń W. , Gorzelańczyk E. J.
Bio-Algorithms and Med-Systems
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2008
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tom Vol. 4, no. 8
73--79
EN
This paper presents response direction-dependent saccadic velocity waveform asymmetry and direction-dependent difference between means of saccadic parameters of eyeball movement such as duration, latency, amplitude, peak velocity. The research was a preparatory study which aimed to determine repetitive patterns in saccadic velocity waveform (SW). The study also aimed to distinguish different types of SW and eyeball movement direction-dependent waveform asymmetry (SWA).
PL
W artykule przedstawiono zależną od kierunku ruchu oczu asymetrię w profilu prędkości sakad i zależną od kierunku ruchu oczu różnicę pomiędzy średnimi wybranych parametrów skokowych ruchów gałek ocznych tj.: czasem trwania, latencją , amplitudą , prędkością szczytową . Badanie ma charakter wstępnego studium, którego celem jest opisanie powtarzających się wzorców profilu prędkości sakad. Celem badania jest również wyodrębnienie różnych przebiegów profili prędkości sakad oraz ich asymetrii, która związana jest z kierunkiem ruchu oczu.
10
Content available English language fluency and the way Polish school students work with English textbook material on the example of two students
51%
Andrychowicz-Trojanowska A. , Andrychowicz-Trojanowska A.
Kwartalnik Neofilologiczny
|
2018
|
nr 4
11
Content available Eye-tracking in Cultural Studies
51%
Smołucha D.
Perspektywy Kultury
|
2019
|
tom 27
|
nr 4
169-184
PL
Eye-tracking to technologia, której działanie polega na śledzeniu ruchu gałek ocznych. Wyniki badania pozwalają na szczegółową ana­lizę ścieżki wzroku, udzielają odpowiedzi na pytania, na co patrzymy, na czym skupiamy największą uwagę, a co ignorujemy i czego nie do­strzegamy, pomimo tego, że znajduje się w polu widzenia. Śledzenie ruchu gałek ocznych nie jest technologią nową, jednak stale udosko­nalane, zyskuje coraz większe znaczenie w życiu codziennym, wielu dziedzinach nauki i w badaniach rynku konsumenckiego. Współ­czesna kultura, zorientowana na absorbcję obrazów, jest szczególnie doskonałą płaszczyzną, na której badania eye-trackingowe znajdują wiele często niestandardowych zastosowań.
EN
Eye-tracking is a technology based on tracking the movement of eye­balls. The results of the study allow a detailed analysis of the path of sight, and provide answers to the questions: what are we looking at, what we focus on and what we ignore despite that the objects are lo­cated in our field of view. The eye movement tracking is not a new technology, but it is constantly improved and is gaining importance in many fields of science and consumer market research. Contempo­rary culture, oriented to image absorption, is a perfect surface for non-standard eye-tracking research.
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