scholarly journals The influence of vergence facility on binocular eye movements during reading

2019 ◽  
Vol 12 (4) ◽  
Author(s):  
Remo Poffa ◽  
Roland Joos
Keyword(s):  
Eye Movements ◽  
Eye Tracking ◽  
Reading Difficulties ◽  
Eye Tracker ◽  
Fixation Disparity ◽  
Linear Mixed Effects ◽  
Eye Movements During Reading ◽  
Distance Conditions ◽  
Reading Distance ◽  
Binocular Coordination

Optometrists regularly use binocular measurements in patients with asthenopic complaints when performing close-up work. The focus of this work was therefore on the correlation of optometric parameters and objective fixation disparity (FD) measured by an eye tracker. In our investigation, 20 participants (6 male, 14 female) were subjected to a classical optometric procedure. Subsequently, these subjects read various sentences on a screen and eye movements were registered by using a RED500 eye tracker. The experiment was performed under two reading distance conditions. In order to be comparable with previous work, the present study was conducted under dark illumination conditions (J. A. Kirkby, Blythe, Drieghe, Benson, & Liversedge, 2013). FD values were deduced from objective eye tracking data during reading. Data analysis was done using linear mixed-effects models. FD was found to depend on vergence facility (t=3.3, p=0.004). Subjects with a low vergence facility showed more eso fixation disparity than subjects with a normal vergence facility. If studies of binocular coordination using eye tracking methods are performed under dark illumination conditions, vergence facility is an important parameter and should be accounted for. Neglecting this parameter may mask other important parameters. Vergence facility in context of reading difficulties may be important.

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.

Using Eye Movements to Study Reading Processes

2017 ◽  
pp. 27-47 ◽  
Author(s):  
Anne E. Cook ◽  
Wei Wei
Keyword(s):  
Eye Movements ◽  
Eye Tracking ◽  
Eye Movement ◽  
Future Research ◽  
Reading Processes ◽  
Reading Measures ◽  
Set Up ◽  
Eye Movements During Reading

This chapter provides an overview of eye movement-based reading measures and the types of inferences that may be drawn from each. We provide logistical advice about how to set up stimuli for eye tracking experiments, with different level processes (word, sentence, and discourse) and commonly employed measures of eye movements during reading in mind. We conclude with examples from our own research of studies of eye movements during reading at the word, sentence, and discourse levels, as well as some considerations for future research.

scholarly journals Tracking your emotions: An eye-tracking study on reader’s engagement with perspective during text comprehension

2020 ◽  
Vol 73 (6) ◽  
pp. 929-940 ◽  
Author(s):  
Scarlett Child ◽  
Jane Oakhill ◽  
Alan Garnham
Keyword(s):  
Eye Movements ◽  
Eye Tracking ◽  
Text Comprehension ◽  
Text Processing ◽  
Emotional Valence ◽  
Personal Perspective ◽  
Eye Movements During Reading

An eye-tracking study explored perspective effects on eye-movements during reading. We presented texts that included either a personal perspective ( you) or an onlooker perspective (he or she). We measured whether fixations on the pronouns themselves differed as a function of perspective, and whether fixations on pronouns were affected by the emotional valence of the text which was either positive or negative. It was found that early in the text, processing of you is easier than he or she. However, as the character referred to by he or she becomes more familiar, fixations on he or she decrease, specifically in negative contexts.

scholarly journals Binocular coordination of eye movements during reading

2006 ◽  
Vol 46 (15) ◽  
pp. 2363-2374 ◽  
Author(s):  
Simon P. Liversedge ◽  
Sarah J. White ◽  
John M. Findlay ◽  
Keith Rayner
Keyword(s):  
Eye Movements ◽  
Eye Movements During Reading ◽  
Binocular Coordination

scholarly journals The binocular coordination of eye movements during reading in children and adults

2006 ◽  
Vol 46 (22) ◽  
pp. 3898-3908 ◽  
Author(s):  
Hazel I. Blythe ◽  
Simon P. Liversedge ◽  
Holly S.S.L. Joseph ◽  
Sarah J. White ◽  
John M. Findlay ◽  
...  
Keyword(s):  
Eye Movements ◽  
Eye Movements During Reading ◽  
Binocular Coordination

scholarly journals Eye movements during the reading of narrative and poetic texts.

2019 ◽  
Vol 12 (7) ◽  
Author(s):  
Arthur Jacobs ◽  
Jana Lüdtke ◽  
Johanna Kaakinen ◽  
Lynn S. Eekhof
Keyword(s):  
Eye Movements ◽  
Eye Tracking ◽  
Theoretical Models ◽  
Video Stream ◽  
Semantic Features ◽  
Software Skills ◽  
Text Reading ◽  
Pros And Cons ◽  
Poetic Texts ◽  
Eye Movements During Reading

Video stream: https://vimeo.com/358415199 Despite a wealth of studies using eye tracking to investigate mental processes during vision or reading, the investigation of oculomotor activity during natural reading of longer texts –be it newspaper articles, narratives or poetry– is still an exception in this field (as evidenced by the program of ECEM 2017 in Wuppertal). Following up on our symposium at ECEM 2017, here we bring together eye movement research on natural text reading to report recent progress in a coordinated way sharing data, experiences and software skills in this highly complex subfield. More specifically, in this symposium we will address several challenges faced by an eye tracking perspective on the reading of longer texts which involve a surplus of intervening variables and novel methods to analyze the data. In particular, the following issues will be addressed: - Which text-analytical and statistical methods are best to deal with the myriad of surface and affective semantic features potentially influencing eye movements during reading of ‘natural’ texts? - What are the pros and cons of using machine learning assisted predictive modeling as an alternative to the standard GLM/LMM frameworks? - Which kind of theoretical models can deal with the level of complexity offered by reading longer natural texts?  

scholarly journals Eye tracking in the wild: Piloting a real-life assessment paradigm for older adults

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Damaris Aschwanden ◽  
Nicolas Langer ◽  
Mathias Allemand
Keyword(s):  
Older Adults ◽  
Eye Movements ◽  
Eye Tracking ◽  
Personality Traits ◽  
Feasibility Study ◽  
Real Life ◽  
Life Assessment ◽  
Grocery Shopping ◽  
Eye Tracker ◽  
Older Individuals

Previous research showed associations between personality traits and eye movements of young adults in the laboratory. However, less is known about these associations in real life and in older age. Primarily, there seems to be no paradigm to assess eye movements of older adults in real life. The present feasibility study thus aimed to test grocery shopping as a real-life assessment paradigm with older adults. Additionally, possible links between personality traits and eye movements were explored. The sample consisted of 38 older individuals (M = 72.85 years). Participants did their grocery shopping in a supermarket while wearing an eye tracker. Three key feasibility issues were examined, that is (1) wearability of the eye tracker during grocery shopping, (2) recording, and (3) evaluation of eye movements in a real-life context. Our real-life assessment paradigm showed to be feasible to implement and acceptable to older adults. This feasibility study provides specific practical recommendations which may be useful for fu-ture studies that plan to innovatively expand the traditional methods repertoire of personality science and aging research by using eye tracking in real life.

scholarly journals Do standard optometric measures predict binocular coordination during reading?

2021 ◽  
Vol 13 (6) ◽  
Author(s):  
Joëlle Joss ◽  
Stephanie Jainta
Keyword(s):  
Eye Movements ◽  
Visual Processing ◽  
Fixation Duration ◽  
Dynamic Parameter ◽  
Complex Task ◽  
Test Results ◽  
Regression Analyses ◽  
Fixation Disparity ◽  
Explained Variance ◽  
Binocular Coordination

In reading, binocular eye movements are required for optimal visual processing and thus, in case of asthenopia or reading problems, standard orthoptic and optometric routines check individual binocular vision by a variety of tests. The present study therefore examines the predictive value of such standard measures of heterophoria, accommodative and vergence facility, AC/A-ratio, NPC and symptoms for binocular coordination parameters during reading. Binocular eye movements were recorded (EyeLink II) for 65 volunteers during a typical reading task and linear regression analyses related all parameters of binocular coordination to all above-mentioned optometric measures: while saccade disconjugacy was weakly predicted by vergence facility (15% explained variance), vergence facility, AC/A and symptoms scores predicted vergence drift (31%). Heterophoria, vergence facility and NPC explained 31% of fixation disparity and first fixation duration showed minor relations to symptoms (18%). In sum, we found only weak to moderate relationships, with expected, selective associations: dynamic parameter related to optometric tests addressing vergence dynamics, whereas the static parameter (fixation disparity) related mainly to heterophoria. Most surprisingly, symptoms were only loosely related to vergence drift and fixation duration, reflecting associations to a dynamic aspect of binocular eye movements in reading and potentially non-specific, overall but slight reading deficiency. Thus, the efficiency of optometric tests to predict binocular coordination during reading was low – questioning a simple, straightforward extrapolation of such test results to an overlearned, complex task.

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.

Uses of Eye-Tracking Data in Second Language Sentence Processing Research

2010 ◽  
Vol 30 ◽  
pp. 149-166 ◽  
Author(s):  
Paola E. Dussias
Keyword(s):  
Second Language ◽  
Eye Movements ◽  
Eye Tracking ◽  
Language Processing ◽  
Sentence Processing ◽  
Future Research ◽  
Critical Question ◽  
The People ◽  
Recent Developments ◽  
Eye Movements During Reading

When hearing or reading words and sentences in a second language (L2), we face many uncertainties about how the people and objects referred to are connected to one another. So what do we do under these conditions of uncertainty? Because relatively proficient L2 speakers have access to the grammar and lexicon of each language when comprehending words and sentences or when planning spoken utterances, and because the recent research suggests that these linguistic systems are not entirely independent, there is a critical question about how the knowledge of two languages affects basic aspects of language processing. In this article, I review how eye-tracking methodology has been used as a tool to address this question. I begin by discussing why eye movements are a useful methodology in language processing research, and I provide a description of one experimental paradigm developed to explore eye movements during reading. Second, I present recent developments in the use of eye tracking to study L2 spoken-language comprehension. I also highlight the importance of using multiple measures of online sentence processing by discussing results obtained using a moving window task and eye-tracking records while L2 speakers read syntactically ambiguous relative clauses. Next, I discuss research investigating syntactic processing when L2 speakers process mixed language. I end with suggestions for future research directions.

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