• Title/Summary/Keyword: Eye Movement

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A Study on Eye-Tracking by Speed & Direction Changes of Graphic Images (그래픽 이미지의 움직임 속도와 방향 변화에 따른 시선 이동 추적 연구)

  • Kim, Sehwa;Seong, Cheekyong
    • Journal of Communication Design
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    • v.38
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    • pp.80-90
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    • 2012
  • The purpose of this study is to determine the differences in eye-tracking, which is one of the emotional reactions of the autonomic nervous system, against various experimental stimuli that vary in terms of the movement attributes of graphic image. This experiment conducted an analysis of variance of the movement factors(n) in each movement attribute(speed, horizontality movement, verticality movement, diagonal movement). Dependent variables were the fixation starting time, the fixation dwell time, the whole fixation time from stimulus appearance, and the eye-tracking length. The result of eye-tracking against movement speed showed nonsignificant differences for each movement attribute. In the horizontality movement, the → movement was higher than the ← movement. In the verticality movement, the ↑ movement was higher than the ↓ movement. In the diagonal movement, there was not significant differences for each movement attributes.

Cervico-ocular Reflex in Bilateral Labyrinthectomized Cats (양측 전정절제(前庭切除) 가묘(家猫)의 경안구반사(頸眼球反射))

  • Park, Byung-Rim;Park, Chul-Soon
    • The Korean Journal of Physiology
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    • v.22 no.1
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    • pp.79-88
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    • 1988
  • The effect of cervical proprioceptors on the control of eye movement and body posture was examined in unanesthetized labyrinthine intact and bilateral labyrinthectomized cats. Cervico-ocular reflex(COR) was elicited by stimulation of the cervical proprioceptors by means of sinusoidal rotation of head or body in the darkness. The following results were obtained: 1) In labyrinthine intact cats, sinusoidal rotation of the whole body elicited compensatory eye movement(vestibulo-ocular reflex: VOR); the direction of eye movement was opposite to the direction of head rotation. 2) Anticompensatory eye movement was observed by sinusoidal rotation of the body with head fixed in labyrinthine intact cats; the direction of eye movement was the same as the direction of head rotation. 3) Compensatory eye movement was observed by sinusoidal rotation of the head with body fixed or sinusoidal rotation of the body with head fixed in both acute and chronic bilateral labyrinthectomized cats. These results suggest that the cervical proprioceptors are important in the control of ocular movement and posture in the bilateral labyrintectomized cats, although they are questionable in labyrinthine intact cats.

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Differences of Smooth Pursuit Eye Movement in the Patients with Schizophrenic Disorder in Accordance with Family History and Their Types(Type I and Type II) (정신분열병 환자에 있어서 가족력과 임상유형(Type I, Type II)에 따른 안구추적운동의 차이)

  • Jeong, Hee Yeon;Rheem, Doo Won;Kwon, Young Joon;Joo, Gyung Soo;Seo, Mi Kyoung;Kim, Dong Soo
    • Korean Journal of Biological Psychiatry
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    • v.2 no.2
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    • pp.275-280
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    • 1995
  • Smooth pursuit eye movement, one of the reliable biological markers of schizophrenia, is not always abnormal in schizophrenic patients. Therefore the authors studied it in schizophrenic patients and normal controls and compared the results according to the presence or abscence of family history of psychosis and types (type I and type II). The results are as follows: 1) In the 18 normal control group (8 mole, 10 female), there was no sex difference in the responses of smooth pursuit eye movement. 2) In th 44 schizophrenic group (28 male, 16 female), there also was no sex difference in the responses of smooth pursuit eye movement. 3) In comparison of 44 schizophrenic group to 18 normal control group, there was significantly increased abnormal response in smooth pursuit eye movement in schizophrenic group (P < 0.005). 4) In schizophrenic group, there was no difference in the responses of smooth pursuit eye movement between type I and type II schizophrenia. 5) The presence or abscence of family history of psychosis made no difference in the responses of smooth pursuit eye movement in schizophrenic group. 6) Subdivision of type I or type II in each case of presence or abscence of family history made no difference in the responses of smooth pursuit eye movement in schizophrenic group.

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Hybrid Web App Development for Eye movement at Mobile Devices (모바일 기기에서 눈 운동을 할 수 있는 하이브리드 웹앱 개발)

  • Seok, Hyun-Tack
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.13 no.6
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    • pp.249-254
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    • 2013
  • This paper presented a mobile application program to help eye movement with mobile devices. It helps to strengthen ocular muscles and improve visual acuity. Users can easily access the program of eye movement type of app program in mobile devices. There were some papers which studied on the eye movement and showed efficient eye movement method for improvement of visual acuity. So here presents programming codes to help eye movement with some specific patterns from some papers and it was implemented by HTML, CSS and javascript. To convert web code to app code, appspresso tool was used.

Case Report of a Brain-stem Infarction Patient with Complaints of Diplopia and Eye-movement Impairment Treated with Traditional Korean Medicine (복시 및 안구운동장애를 호소하는 뇌간경색 환자의 한방 치험 1례)

  • Noh, Hyeon-seok;Kim, Su-min;Ha, You-kyung;Yi, Chan-sol;Choi, Dong-jun
    • The Journal of Internal Korean Medicine
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    • v.37 no.2
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    • pp.345-351
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    • 2016
  • Objective: This clinical study reports on the effectiveness of traditional Korean medicine on a patient with diplopia and eye-movement impairment caused by brain-stem infarction.Method: A patient with diplopia and eye-movement impairment caused by brain-stem infarction was treated with herbal medicine (Bogan-san), acupuncture, and moxibustion. We used the visual analogue scale (VAS) of diplopia and measured the patient's eye-movement range to evaluate the effectiveness of the treatment.Results: The diplopia VAS decreased and eye-movement range improved after treatment with traditional Korean medicine.Conclusion: This clinical study suggests that traditional Korean medicine could greatly contribute to the treatment of diplopia and eye-movement impairment caused by brain-stem infarction.

Characteristics of Corrective Saccadic Eye Movement with E.O.G. (E.O.G.를 이용한 Corrective Saccadic 안구운동 특성)

  • 김윤수;박상희
    • Journal of Biomedical Engineering Research
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    • v.2 no.1
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    • pp.21-30
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    • 1981
  • In this study, measuring eye movements with E.O.G. to targets beyond 20$^{\circ}$ from fixation point, results are as follows. (1) When the eyes turn toward targets of more than 20$^{\circ}$ eccentricity, the first saccadic eye movement falls short of the target. The presence of image of the target off the fovea(visual error signal) subsequent to such an undershoot elicits, after short interval, corrective saccadic eye movements(usually one) which place the image of the target on the fovea. (2) There are different programming modes at retina for eye movement to targets within and beyond 20$^{\circ}$ from the fixation point. (3) Saccadic system, preparing the direction and amplitude of eye movement completes the corrective saccadic eye movements. (4) Distribution of latency and intersaccadic interval(I.S.I.)are frequently multi modal, with a seperation between modes of 25[msec]. (5) There are two types of saccadic eye movements for the double-step targets. This fact suggests that the visual information is sampled stochastically. (6) The new model of saccadic system including the dissociation of visual functions dependent on retinal eccentricity is required.

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Eye and hand movement by experienced and novice workers in hazard machinery operation (위험 기계작업에서 숙련자와 초보자의 눈과 손 움직임에 대한 연구)

  • 박경수;김유창
    • Proceedings of the ESK Conference
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    • 1995.10a
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    • pp.101-108
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    • 1995
  • This paper presents an experiment which examines eye movement characteristics of novice and experienced workers in the press operation. Signficant difference between the novice and the experienced workers was observed in eye fixation time, eye movement patterns, hand duration time, and hand movement time. The results could be used to set up a guide to train the novice workers and to determine how long the novice should be trained.

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Safety Evaluation of Press Operation using Eye Movement (눈움직임을 이용한 프레스작업의 안전성 평가에 대한 연구)

  • 박경수;김유창
    • Journal of the Korean Society of Safety
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    • v.11 no.1
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    • pp.129-132
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    • 1996
  • This paper presents an experiment which examines eye movement characteristics of novice and experienced workers in the press operation. Significant difference between the novice and the experienced workers was observed in fixation time, eye movement patterns, and spatial distribution of fixations when the top die hits the bottom die. There were no significant difference between the novice and the experienced workers in eye movement time. The results could be used to set up a guide to train the novice workers and to determine how long the novice should be trained.

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Eye Dominance and Reading Speed

  • Chen, Ai-Hong;Mustapha, Nurfazliha;Rahman, Muhamad Irwan
    • Journal of Korean Ophthalmic Optics Society
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    • v.16 no.3
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    • pp.333-338
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    • 2011
  • Purpose: The aim of this study was to investigate eye dominance and reading performance based on eye movements and reading speed. Methods: The eye dominance of 30 subjects was determined using the sighting test (hole formed by hands). The subjects were asked to read the numerical reading material aloud in English from left to right and from right to left at random. The number of saccades, regressions, and inter-fixations per minute was calculated using Visual-Oculography (VOG) and the reading speed was recorded as number of characters per minute using stopwatch. Results: No significant differences in reading speed among right and left eye dominant subjects as they read from left to right and right to left directions (p>0.05). However, left eye dominant subjects were found to read significantly faster compared to right eye dominant subjects in both directions of reading (p<0.05). In term of eye movement patterns, no significant differences in saccades, regressions, and inter-fixations per minute were found between subjects with right eye dominance and left eye dominance for both reading directions (p>0.05). Conclusions: Reading performance in term of eye movement and speed was not affected by eye dominance, but subjects with left eye dominance read faster than subjects with right eye dominance.

The Effects of Eye Health and Dynamic Visual Activity on Eye Movement in University Students (안구운동이 대학생의 눈 건강과 동체시력에 미치는 영향)

  • Kim, Ju-Hyun
    • Journal of Korea Entertainment Industry Association
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    • v.14 no.6
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    • pp.191-199
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    • 2020
  • Younger generations use a variety of visual media, such as smartphones, televisions, and computers. Due to the development of visual media, the health of eye was weakening. Therefore, this study aimed to investigate the effects of eye health and dynamic visual activity on eye muscle stimulation with eye movement and therapeutic massage in university students. 38 university students in their 20s were divided into a control group(18) and an experimental group(20). The experimental group performed eye movement and therapeutic massage every 30 minutes for 5 times a week for 4 weeks. Ocular fatigue, maximal blinking interval, ocular surface temperature, and dynamic visual activity were measured before and after 4 weeks. Ocular fatigue was decreased significantly after 4 weeks (p<.05), and maximal blinking interval was increased significantly after 4 weeks (p<.05). Ocular surface temperature was not showed a significant difference after 4 weeks (p>.05), and dynamic visual activity was increased significantly after 4 weeks (p<.05). Therefore, eye movement and therapeutic massage are recommended for the improvement of eye function and eye health. It is expected to be used as research data to restore and prevent for eye health.