scholarly journals Neurophysiological, Oculomotor, and Computational Modeling of Impaired Reading Ability in Schizophrenia

2020 ◽  
Author(s):  
Elisa C Dias ◽  
Heather Sheridan ◽  
Antígona Martínez ◽  
Pejman Sehatpour ◽  
Gail Silipo ◽  
...  
Keyword(s):  
Eye Tracking ◽  
Computational Modeling ◽  
Oral Reading ◽  
Reading Ability ◽  
Fixation Duration ◽  
Lexical Processing ◽  
Moderate Increase ◽  
Fluent Reading ◽  
Semantic Level ◽  
Related Potentials

Abstract Schizophrenia (Sz) is associated with deficits in fluent reading ability that compromise functional outcomes. Here, we utilize a combined eye-tracking, neurophysiological, and computational modeling approach to analyze underlying visual and oculomotor processes. Subjects included 26 Sz patients (SzP) and 26 healthy controls. Eye-tracking and electroencephalography data were acquired continuously during the reading of passages from the Gray Oral Reading Tests reading battery, permitting between-group evaluation of both oculomotor activity and fixation-related potentials (FRP). Schizophrenia patients showed a marked increase in time required per word (d = 1.3, P < .0001), reflecting both a moderate increase in fixation duration (d = .7, P = .026) and a large increase in the total saccade number (d = 1.6, P < .0001). Simulation models that incorporated alterations in both lower-level visual and oculomotor function as well as higher-level lexical processing performed better than models that assumed either deficit-type alone. In neurophysiological analyses, amplitude of the fixation-related P1 potential (P1f) was significantly reduced in SzP (d = .66, P = .013), reflecting reduced phase reset of ongoing theta-alpha band activity (d = .74, P = .019). In turn, P1f deficits significantly predicted increased saccade number both across groups (P = .017) and within SzP alone (P = .042). Computational and neurophysiological methods provide increasingly important approaches for investigating sensory contributions to impaired cognition during naturalistic processing in Sz. Here, we demonstrate deficits in reading rate that reflect both sensory/oculomotor- and semantic-level impairments and that manifest, respectively, as alterations in saccade number and fixation duration. Impaired P1f generation reflects impaired fixation-related reset of ongoing brain rhythms and suggests inefficient information processing within the early visual system as a basis for oculomotor dyscontrol during fluent reading in Sz.

scholarly journals Evaluating Year-end Oral Reading Records of First Graders in terms of Prosody Proficiency

2016 ◽  
Vol 5 (1) ◽  
pp. 20
Author(s):  
Mustafa Kocaarslan ◽  
Akile Ergün
Keyword(s):  
Oral Reading ◽  
Reading Ability ◽  
Expository Text ◽  
First Grade ◽  
Expository Texts ◽  
City Centre ◽  
Fluent Reading ◽  
Low Level ◽  
Significant Difference ◽  
Reading Prosody

Prosody is evaluated as an important factor in fluent reading and in literature it is expressed as a significant reading skill that affects comprehension. Prosody -described as a fluent reading ability of a reader with suitable sentences and expressions- includes stress, intonation, duration (time passed on voicing a word) and pausing properties that contribute to effective reading of a text. First grade students are supposed to have fluent reading abilities at the end of the year and they are expected to develop effective prosodic reading. Therefore, the aim of this study is to examine first grade students’ oral reading performances in terms of prosodic competences. Study sample in this study which has been conducted using descriptive survey model consists of 49 first grade students who participated in the study voluntarily in four different classes in a primary school in the city centre of Bartin in Turkey. For the evaluation of the reading prosodies of the students, their oral reading performances of a narrative and an expository text are recorded for one minute with a video camera and these records are evaluated with reading prosody rubric. As a result of the analysis, it is observed that students’ reading prosody score means are low in both narrative and expository texts. According to reading prosody scale, it appears that 59% of the students are at low level in narrative text and 41% of the students are at low level in expository text. Additionally, as a result of Mann-Whitney U test it appears that gender of the students does not make a significant difference in oral reading prosodies of the students in both narrative and expository texts.

scholarly journals Reduced Visual Magnocellular Event-Related Potentials in Developmental Dyslexia

2021 ◽  
Vol 11 (1) ◽  
pp. 48
Author(s):  
John Stein
Keyword(s):  
Steady State ◽  
Developmental Dyslexia ◽  
Reading Ability ◽  
Event Related Potentials ◽  
Black And White ◽  
Reverse Pattern ◽  
Related Potentials ◽  
The Right ◽  
Visual Hemifields ◽  
Electroencephalogram Eeg

(1) Background—the magnocellular hypothesis proposes that impaired development of the visual timing systems in the brain that are mediated by magnocellular (M-) neurons is a major cause of dyslexia. Their function can now be assessed quite easily by analysing averaged visually evoked event-related potentials (VERPs) in the electroencephalogram (EEG). Such analysis might provide a useful, objective biomarker for diagnosing developmental dyslexia. (2) Methods—in adult dyslexics and normally reading controls, we recorded steady state VERPs, and their frequency content was computed using the fast Fourier transform. The visual stimulus was a black and white checker board whose checks reversed contrast every 100 ms. M- cells respond to this stimulus mainly at 10 Hz, whereas parvocells (P-) do so at 5 Hz. Left and right visual hemifields were stimulated separately in some subjects to see if there were latency differences between the M- inputs to the right vs. left hemispheres, and these were compared with the subjects’ handedness. (3) Results—Controls demonstrated a larger 10 Hz than 5 Hz fundamental peak in the spectra, whereas the dyslexics showed the reverse pattern. The ratio of subjects’ 10/5 Hz amplitudes predicted their reading ability. The latency of the 10 Hz peak was shorter during left than during right hemifield stimulation, and shorter in controls than in dyslexics. The latter correlated weakly with their handedness. (4) Conclusion—Steady state visual ERPs may conveniently be used to identify developmental dyslexia. However, due to the limited numbers of subjects in each sub-study, these results need confirmation.

Why subtitle speed matters: Evidence from word skipping and rereading

2021 ◽  
pp. 1-26
Author(s):  
Jan-Louis Kruger ◽  
Natalia Wisniewska ◽  
Sixin Liao
Keyword(s):  
Eye Movements ◽  
Eye Tracking ◽  
Eye Movement ◽  
Lexical Processing ◽  
Situation Model ◽  
Linguistic Processing ◽  
Reading Behavior ◽  
New Findings ◽  
Word Skipping

Abstract High subtitle speed undoubtedly impacts the viewer experience. However, little is known about how fast subtitles might impact the reading of individual words. This article presents new findings on the effect of subtitle speed on viewers’ reading behavior using word-based eye-tracking measures with specific attention to word skipping and rereading. In multimodal reading situations such as reading subtitles in video, rereading allows people to correct for oculomotor error or comprehension failure during linguistic processing or integrate words with elements of the image to build a situation model of the video. However, the opportunity to reread words, to read the majority of the words in the subtitle and to read subtitles to completion, is likely to be compromised when subtitles are too fast. Participants watched videos with subtitles at 12, 20, and 28 characters per second (cps) while their eye movements were recorded. It was found that comprehension declined as speed increased. Eye movement records also showed that faster subtitles resulted in more incomplete reading of subtitles. Furthermore, increased speed also caused fewer words to be reread following both horizontal eye movements (likely resulting in reduced lexical processing) and vertical eye movements (which would likely reduce higher-level comprehension and integration).

Predicting readers’ domain knowledge based on eye-tracking measures

2018 ◽  
Vol 36 (6) ◽  
pp. 1027-1042 ◽  
Author(s):  
Quan Lu ◽  
Jiyue Zhang ◽  
Jing Chen ◽  
Ji Li
Keyword(s):  
Logistic Regression ◽  
Eye Tracking ◽  
Information Search ◽  
Domain Knowledge ◽  
Fixation Duration ◽  
Baseline Model ◽  
Content Type ◽  
Knowledge Based ◽  
Total Fixation ◽  
Negative Predictor

Purpose This paper aims to examine the effect of domain knowledge on eye-tracking measures and predict readers’ domain knowledge from these measures in a navigational table of contents (N-TOC) system. Design/methodology/approach A controlled experiment of three reading tasks was conducted in an N-TOC system for 24 postgraduates of Wuhan University. Data including fixation duration, fixation count and inter-scanning transitions were collected and calculated. Participants’ domain knowledge was measured by pre-experiment questionnaires. Logistic regression analysis was leveraged to build the prediction model and the model’s performance was evaluated based on baseline model. Findings The results showed that novices spent significantly more time in fixating on text area than experts, because of the difficulty of understanding the information of text area. Total fixation duration on text area (TFD_T) was a significantly negative predictor of domain knowledge. The prediction performance of logistic regression model using eye-tracking measures was better than baseline model, with the accuracy, precision and F(β = 1) scores to be 0.71, 0.86, 0.79. Originality/value Little research has been reported in literature on investigation of domain knowledge effect on eye-tracking measures during reading and prediction of domain knowledge based on eye-tracking measures. Most studies focus on multimedia learning. With respect to the prediction of domain knowledge, only some studies are found in the field of information search. This paper makes a good contribution to the literature on the effect of domain knowledge on eye-tracking measures during N-TOC reading and predicting domain knowledge.

scholarly journals Miscue Analysis of Oral Reading Among Non-Proficient Malaysian ESL Learners

2014 ◽  
Vol 2 (2) ◽  
pp. 179-185
Author(s):  
Adeena Deepa Ramakrishna Pillai ◽  
Shamala Paramasivam
Keyword(s):  
Oral Reading ◽  
Reading Ability ◽  
Direct Method ◽  
Multiple Choice ◽  
Miscue Analysis ◽  
Multiple Choice Questions ◽  
Microsoft Excel ◽  
Reading Material ◽  
Complex Words ◽  
Esl Learners

Reading is a vital skill. Research has shown that proficient learners usually have a greater comprehension of the reading material. This study focuses on non-proficient learners’ oral reading as a direct method of assessing their reading ability. Miscue analysis is used as a tool to gather information and measure strategies used in reading and comprehending a given material. The study investigates the types and frequencies of miscues made by learners when they orally read texts and assesses learners’ comprehension based on the oral reading through the use of multiple-choice questions. The number of miscues made and the scores for the multiple choice questions are patterned using Microsoft Excel program and are converted into percentages. This study found that when the number of miscues made by the learners reduced during the oral reading process, the scores on the comprehension section did not necessarily improve. The types of miscues made by learners were omission of words namely plural and past-tense endings of verbs, substitution of words such as the pronoun ‘she’ with ‘he’, and hesitation especially with complex words. The findings imply that learners have language problems in grammar, vocabulary, pronunciation, and the use of reading strategies.

Detecting Online Learners' Reading Ability via Eye-Tracking

2018 ◽  
pp. 163-185
Author(s):  
Samiullah Paracha ◽  
Ayaka Inuoue ◽  
Sania Jehanzeb
Keyword(s):  
Eye Tracking ◽  
Learning Environments ◽  
Reading Ability ◽  
Short Term Memory ◽  
Reading Performance ◽  
Accurate Assessment ◽  
Online Learners ◽  
Motivation To Read ◽  
Tracking Method ◽  
Instructional Goal

Nurturing the motivation to read is an important instructional goal. There can be a number of reasons for a learner to have problems with reading in online learning environments: (1) eyes being unable to scan easily along a line of print; or (2) as a result of concentrating on controlling the eyes concentration, the short-term memory become impaired. The study reported in this chapter used eye tracking method to provide a useful experimental design for exploring reading performance of university online learners. Different eye-tracking experiments were carried out to help informing the teachers to improve the learning environment and be able to do more accurate assessment about what the students were attending to on the screen.

Effects of Image Segmentation and Target Number on Visual Search: An Eye-Tracking Study

2018 ◽  
Vol 62 (1) ◽  
pp. 1987-1991
Author(s):  
Kaifeng Liu ◽  
Calvin Ka-lun Or
Keyword(s):  
Image Segmentation ◽  
Visual Search ◽  
Eye Tracking ◽  
Repeated Measures ◽  
Fixation Duration ◽  
Search Time ◽  
Search Performance ◽  
Target Number ◽  
Lower Accuracy ◽  
Time Accuracy

This is an eye-tracking study examining the effects of image segmentation and target number on visual search performance. A two-way repeated-measures computer-based visual search test was used for data collection. Thirty students participated in the test, in which they were asked to search for all of the Landolt Cs in 80 arrays of closed rings. The dependent variables were search time, accuracy, fixation count, and average fixation duration. Our principal findings were that some of the segmentation methods significantly improved accuracy, and reduced search time, fixation count, and average fixation duration, compared with the no-segmentation condition. Increased target number was found to be associated with longer search time, lower accuracy, more fixations, and longer average fixation duration. Our study indicates that although visual search tasks with multiple targets are relatively difficult, the visual search accuracy and efficiency can potentially be improved with the aid of image segmentation.

scholarly journals Common Ground Information Affects Reference Resolution: Evidence From Behavioral Data, ERPs, and Eye-Tracking

2020 ◽  
Vol 11 ◽  
Author(s):  
Maria Richter ◽  
Mariella Paul ◽  
Barbara Höhle ◽  
Isabell Wartenburger
Keyword(s):  
Eye Tracking ◽  
Language Processing ◽  
Cognitive Skills ◽  
Common Ground ◽  
Event Related Potentials ◽  
Referential Communication ◽  
Reference Resolution ◽  
Early Integration ◽  
Related Potentials ◽  
Socially Situated

One of the most important social cognitive skills in humans is the ability to “put oneself in someone else’s shoes,” that is, to take another person’s perspective. In socially situated communication, perspective taking enables the listener to arrive at a meaningful interpretation of what is said (sentence meaning) and what is meant (speaker’s meaning) by the speaker. To successfully decode the speaker’s meaning, the listener has to take into account which information he/she and the speaker share in their common ground (CG). We here further investigated competing accounts about when and how CG information affects language comprehension by means of reaction time (RT) measures, accuracy data, event-related potentials (ERPs), and eye-tracking. Early integration accounts would predict that CG information is considered immediately and would hence not expect to find costs of CG integration. Late integration accounts would predict a rather late and effortful integration of CG information during the parsing process that might be reflected in integration or updating costs. Other accounts predict the simultaneous integration of privileged ground (PG) and CG perspectives. We used a computerized version of the referential communication game with object triplets of different sizes presented visually in CG or PG. In critical trials (i.e., conflict trials), CG information had to be integrated while privileged information had to be suppressed. Listeners mastered the integration of CG (response accuracy 99.8%). Yet, slower RTs, and enhanced late positivities in the ERPs showed that CG integration had its costs. Moreover, eye-tracking data indicated an early anticipation of referents in CG but an inability to suppress looks to the privileged competitor, resulting in later and longer looks to targets in those trials, in which CG information had to be considered. Our data therefore support accounts that foresee an early anticipation of referents to be in CG but a rather late and effortful integration if conflicting information has to be processed. We show that both perspectives, PG and CG, contribute to socially situated language processing and discuss the data with reference to theoretical accounts and recent findings on the use of CG information for reference resolution.

scholarly journals Lexical processing deficits in children with developmental language disorder: An event-related potentials study

2015 ◽  
Vol 27 (2) ◽  
pp. 459-476 ◽  
Author(s):  
Sergey A. Kornilov ◽  
James S. Magnuson ◽  
Natalia Rakhlin ◽  
Nicole Landi ◽  
Elena L. Grigorenko
Keyword(s):  
Lexical Processing ◽  
Time Window ◽  
Language Disorder ◽  
Event Related Potentials ◽  
Functional Independence ◽  
Event Related Potential ◽  
Developmental Language Disorder ◽  
Compensatory Mechanisms ◽  
Related Potentials ◽  
Processing Deficits

AbstractLexical processing deficits in children with developmental language disorder (DLD) have been postulated to arise as sequelae of their grammatical deficits (either directly or via compensatory mechanisms) and vice versa. We examined event-related potential indices of lexical processing in children with DLD (n= 23) and their typically developing peers (n= 16) using a picture–word matching paradigm. We found that children with DLD showed markedly reduced N400 amplitudes in response both to auditorily presented words that had initial phonological overlap with the name of the pictured object and to words that were not semantically or phonologically related to the pictured object. Moreover, this reduction was related to behavioral indices of phonological and lexical but not grammatical development. We also found that children with DLD showed a depressed phonological mapping negativity component in the early time window, suggesting deficits in phonological processing or early lexical access. The results are partially consistent with the overactivation account of lexical processing deficits in DLD and point to the relative functional independence of lexical/phonological and grammatical deficits in DLD, supporting a multidimensional view of the disorder. The results also, although indirectly, support the neuroplasticity account of DLD, according to which language impairment affects brain development and shapes the specific patterns of brain responses to language stimuli.

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