scholarly journals “Same, same but different”: The optimal viewing position effect in developmental dyslexia, developmental coordination disorder and comorbid disorders

Dyslexia ◽  
2021 ◽  
Author(s):  
Stéphanie Bellocchi ◽  
Stéphanie Ducrot
Keyword(s):  
Developmental Dyslexia ◽  
Developmental Coordination Disorder ◽  
Position Effect ◽  
Comorbid Disorders ◽  
Optimal Viewing Position ◽  
Coordination Disorder ◽  
Viewing Position

scholarly journals Effect of comorbid developmental dyslexia on oculomotor behavior in children with developmental coordination disorder: A study with the Developmental Eye Movement test

2021 ◽  
Vol 76 ◽  
pp. 102764
Author(s):  
Stéphanie Bellocchi ◽  
Stéphanie Ducrot ◽  
Jessica Tallet ◽  
Mélanie Jucla ◽  
Marianne Jover
Keyword(s):  
Eye Movement ◽  
Developmental Dyslexia ◽  
Developmental Coordination Disorder ◽  
Oculomotor Behavior ◽  
Coordination Disorder ◽  
Movement Test

A perceptual-economy account for the inverted-optimal viewing position effect.

2007 ◽  
Vol 33 (5) ◽  
pp. 1220-1249 ◽  
Author(s):  
Françoise Vitu ◽  
Denis Lancelin ◽  
Valentine Marrier d'Unienville
Keyword(s):  
Position Effect ◽  
Optimal Viewing Position ◽  
Viewing Position

scholarly journals Attentional and executive functions in children and adolescents with developmental coordination disorder and the influence of comorbid disorders: A systematic review of the literature

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252043
Author(s):  
Catherine Lachambre ◽  
Mélodie Proteau-Lemieux ◽  
Jean-François Lepage ◽  
Eve-Line Bussières ◽  
Sarah Lippé
Keyword(s):  
Systematic Review ◽  
Working Memory ◽  
Executive Functions ◽  
Developmental Coordination Disorder ◽  
Neurodevelopmental Disorder ◽  
Verbal Working Memory ◽  
Therapeutic Interventions ◽  
Comorbid Disorders ◽  
Review Of The Literature ◽  
Coordination Disorder

Developmental coordination disorder (DCD) is a neurodevelopmental disorder affecting primarily motor skills, but attentional and executive impairments are common in affected individuals. Moreover, the presence of neurodevelopmental comorbidities is frequent in this population, which certainly influences the cognitive profile of the children concerned. Previous studies have reported deficits in visuospatial/nonverbal and planning tasks. This systematic review of the literature aims to determine if impairments can be found in other attentional and executive functions as well. The type of cognitive tasks, the tasks’ modality (verbal/nonverbal), and the influence of comorbid disorders on attentional and executive profiles are systematically considered. Forty-one studies were identified through the PubMed/Medline and PsycINFO databases according to pre-established eligibility criteria. The results reveal weaknesses in inhibitory control, working memory, planning, nonverbal fluency, and general executive functioning in children with DCD. The presence of comorbid disorders seemingly contributes to the verbal working memory difficulties findings. This review contributes to a better understanding of the cognitive impairments in DCD and of the needs of children with this disorder, allowing to optimize practitioners’ therapeutic interventions.

scholarly journals Letter Visibility and the Optimal Viewing Position Effect of Isolated Connected and Un-Connected Letters in Arabic

2015 ◽  
Vol 19 (3) ◽  
pp. 174-200 ◽  
Author(s):  
Deia Ganayim
Keyword(s):  
Position Effect ◽  
Reaction Times ◽  
Letter Recognition ◽  
Initial Letter ◽  
Visual Identification ◽  
Initial Fixation ◽  
Optimal Viewing Position ◽  
Possible Cause ◽  
Viewing Position

Abstract The present study provides a further exploration of the role of Arabic letter visibility as a possible cause of the Optimal Viewing Position (OVP) effect. We used isolated connected and un-connected Arabic letters of different shapes (basic, initial, medial, final) placed at the center of fixation (Experiment 1) and at various possible positions in isolated presentation (Experiment 2). In order to investigate whether performance in the visual identification task is modulated by letter type, we presented each of the isolated connected and un-connected letter targets in each of the eleven stimulus positions across the array to produce a mean RT (ms) for each of the letter types. Using the initial fixation paradigm enabled us to compare reaction times with correctly identified letter targets appearing in the different possible positions. The findings of the present experiments demonstrated that visual letter recognition is influenced by: (i) the isolated letters’ type (connected, un-connected), as connected letters are easier to recognize than un-connected letters; (ii) isolated letters’ shape (basic, initial, medial, final), as medial and final are harder to recognize than basic and initial letter shapes; (iii) visual field, as reading rates were longer for letter stimuli that were presented in LVF compared to RVF; and (iv) eccentricity, as letter reading rates were correlated with their eccentric placement.

An Optimal Viewing Position Effect in the Stroop Task When Only One Letter Is the Color Carrier

2007 ◽  
Vol 54 (4) ◽  
pp. 273-280 ◽  
Author(s):  
Ben A. Parris ◽  
Dinkar Sharma ◽  
Brendan Weekes
Keyword(s):  
Word Recognition ◽  
Visual Word Recognition ◽  
Stroop Task ◽  
Position Effect ◽  
Automatic Processing ◽  
Stroop Interference ◽  
Single Letter ◽  
Visual Word ◽  
Optimal Viewing Position ◽  
Viewing Position

Abstract. Coloring only a single letter in the Stroop task can result in a reduction or elimination of Stroop interference. The present experiments were designed to test whether this modulation of Stroop interference occurs at all letter positions. Specifically, we investigated whether Stroop interference was reduced when the colored letter occupied the optimal viewing position (OVP). The experiments show that Stroop interference is not reduced at the OVP (Experiment 1) and that Stroop interference at the OVP is significantly greater than at other letter positions (Experiments 1 and 2). This finding has important theoretical and methodological consequences for studies of automatic processing in visual word recognition.

scholarly journals Intrinsic Cortico-Subcortical Functional Connectivity in Developmental Dyslexia and Developmental Coordination Disorder

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Fabien Cignetti ◽  
Federico Nemmi ◽  
Marianne Vaugoyeau ◽  
Nadine Girard ◽  
Jean-Michel Albaret ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Developmental Dyslexia ◽  
Posterior Parietal Cortex ◽  
Developmental Coordination Disorder ◽  
Resting State Fmri ◽  
Typical Development ◽  
Large N ◽  
Common Etiology ◽  
Posterior Parietal ◽  
Coordination Disorder

Abstract Developmental dyslexia (DD) and developmental coordination disorder (DCD) are distinct diagnostic disorders. However, they also frequently co-occur and may share a common etiology. It was proposed conceptually a neural network framework that explains differences and commonalities between DD and DCD through impairments of distinct or intertwined cortico-subcortical connectivity pathways. The present study addressed this issue by exploring intrinsic cortico-striatal and cortico-cerebellar functional connectivity in a large (n = 136) resting-state fMRI cohort study of 8–12-year-old children with typical development and with DD and/or DCD. We delineated a set of cortico-subcortical functional circuits believed to be associated with the brain’s main functions (visual, somatomotor, dorsal attention, ventral attention, limbic, frontoparietal control, and default-mode). Next, we assessed, using general linear and multiple kernel models, whether and which circuits distinguished between the groups. Findings revealed that somatomotor cortico-cerebellar and frontoparietal cortico-striatal circuits are affected in the presence of DCD, including abnormalities in cortico-cerebellar connections targeting motor-related regions and cortico-striatal connections mapping onto posterior parietal cortex. Thus, DCD but not DD may be considered as an impairment of cortico-subcortical functional circuits.

scholarly journals The right visual field advantage and the optimal viewing position effect: On the relation between foveal and parafoveal word recognition.

1996 ◽  
Vol 10 (3) ◽  
pp. 385-395 ◽  
Author(s):  
Marc Brysbaert ◽  
Françoise Vitu ◽  
Walter Schroyens
Keyword(s):  
Visual Field ◽  
Word Recognition ◽  
Position Effect ◽  
Right Visual Field ◽  
The Right ◽  
Optimal Viewing Position ◽  
Viewing Position

Neuropsychological status of French children with developmental dyslexia and/or developmental coordination disorder: Are both necessarily worse than one?

2016 ◽  
Vol 23 (4) ◽  
pp. 422-441 ◽  
Author(s):  
Maëlle Biotteau ◽  
Jean-Michel Albaret ◽  
Sandrine Lelong ◽  
Yves Chaix
Keyword(s):  
Developmental Dyslexia ◽  
Developmental Coordination Disorder ◽  
Neuropsychological Status ◽  
Coordination Disorder
Sign in / Sign up

Export Citation Format

Share Document