Familial history of reading difficulty is associated with diffused bilateral brain activation during reading and greater association with visual attention abilities

Reading difficulty (RD; or dyslexia) is a heritable condition characterized by slow, inaccurate reading accompanied by executive dysfunction, specifically with respect to visual attention. The current study was designed to examine the effect of familial history of RD on the relationship between reading and visual attention abilities in children with RD using a functional MRI reading task. Seventy-one children with RD participated in the study. Based on parental reports of the existence of RD in one or both of each child’s parents, children with RD were divided into two groups: (1) those with a familial history of RD and (2) those without a familial history of RD. Reading and visual attention measures were collected from all participants. Functional MRI data during word reading was acquired in 30 participants of the entire cohort. Children with or without a familial history of RD demonstrated below-average reading and visual attention scores, with greater interaction between these measures in the group with a familial history of RD. Greater bilateral and diffused activation during word reading also were found in this group. We suggest that a familial history of RD is related to greater association between lower reading abilities and visual attention abilities. Parental history of RD therefore may be an important preschool screener (before reading age) to prompt early intervention focused on executive functions and reading-related skills.     

Neurodevelopmental Effects of a Mindfulness and Kindness Curriculum on Executive Functions in Preschool Children—A Randomized,Active-Controlled Study

This study aimed to explore the effect of a mindfulness-based curriculum designed especially for preschoolers on facets of executive functions. Fifty-one preschoolers were randomly assigned to either a mindfulness and kindness curriculum (MC) or an active control dialogic reading program (DR). A battery of behavioral and neurophysiological tests was used to tap into facets of executive control (inhibition, shifting). Electroencephalography data were acquired during the attentional network task (ANT). Relative to DR, children in the MC group exhibited a reduced difference in the N200 Event related potentials (ERP) amplitudes for the congruent versus incongruent conditions during the ANT paradigm representing inhibition and shifting abilities. On the behavioral tasks, both groups improved on executive functions (EF) but on different facets; MC group showed increased inhibition and the DR group demonstrated significantly greater shifting abilities. The results highlight the sensitivity of electrophysiological data to detect subtle cognitive changes. The understanding of how mindfulness-based interventions in preschoolers affect facets of executive functions can enable further refinement and maximization of the benefits of these interventions for this age group.     

Reading improvement in English- and Hebrew-speaking children with reading difficulties after reading acceleration training

A reading acceleration program known to improve reading fluency in Hebrew-speaking adults was tested for its effect on children. Eighty-nine Hebrew- and English-speaking children with reading difficulties were divided into a waiting list group and two training groups (Hebrew and English) and underwent 4 weeks of reading acceleration training. Results of pre- and post-testing of reading abilities point to a significant main effect of the test, demonstrating improvements in silent contextual reading speed, reading comprehension, and speed of processing in both Hebrew and English training groups as compared to their performance before the intervention. This study indicates that the Reading Acceleration Program might be an effective program for improving reading abilities in children, independent of language.     

Longer Fixation Times During Reading Are Correlated With Decreased Connectivity in Cognitive‐Control Brain Regions During Rest in Children

Dyslexia, or reading difficulty (RD), is characterized by slow, inaccurate reading and accompanied by deficit in executive functions (EF) and altered functional connectivity (FC) in the related networks (i.e., cingulo‐opercular). Individuals with RD also present with altered oculomotor gaze patterns that include longer fixation times. The researchers examined the relationship between fixation times and FC of neural circuits related to EF during rest in children with RD and typical readers. Nineteen children participated in a 10‐min resting‐state scan. FC analysis was performed with the anterior cingulate cortex (ACC), related to cognitive control, chosen as a seed. Fixation time during word reading was used as a covariate of interest. Results demonstrated that FC between the ACC and the left inferior frontal cortex pars triangularis and left inferior prefrontal cortex during rest were negatively correlated with fixation times during word reading. These exploratory results support the critical role for the cingulo‐opercular network, which is related to cognitive control, in the reading process, and likely also in reading impairment.