This study reports the neurophysiological and behavioral correlates of digital memory retrieval features in Chinese individuals with and without dyscalculia. A total of 18 children with dyscalculia (ages 11.5-13.5) and 18 controls were tested, and their event-related potentials were digitally recorded simultaneously with behavior measurement.…

Fluency is used as an indicator of reading proficiency. Many students with reading disabilities are unable to benefit from typical interventions. This study is designed to replicate Lorusso, Facoetti, Paganoni, Pezzani, and Molteni's (2006) work using FlashWord, a computer program that tachistoscopically presents words in the right or left visual…

Rapidly changing environments in day-to-day activities, enriched with stimuli competing for attention, require a cognitive control mechanism to select relevant stimuli, ignore irrelevant stimuli, and shift attention between alternative features of the environment. Such attentional orchestration is essential to the acquisition of reading skills. In…

There are relatively few studies on learning and delayed memory with attention-deficit/hyperactivity disorder (ADHD). The objective of the present study was to examine acquisition, free delayed memory, and recognition skills in medication naive children and adolescents aged 8-16 years with ADHD combined subtype (36 participants) and inattentive…

In this study, 123 children with a diagnosis of developmental dyslexia were assigned to different treatment groups, either variations of Bakker's intervention program based on the balance model or a control, a specific reading training group. Thorough cognitive and neuropsychological assessment allowed determination of the subtype of dyslexia…

This study reports on several specific neurocognitive process predictors of reading outcomes for a sample of 278 children with reading disabilities. Three categories of response (i.e., poor, average, and good) were formed via growth curve models of six reading outcomes. Two nested discriminant function analyses were conducted to evaluate the…

Earlier results from the Jyvaskyla Longitudinal Study of Dyslexia showed that newborn event-related potentials (ERPs) of children with and without familial risk for dyslexia were associated with receptive language and verbal memory skills between 2.5 and 5 years of age. We further examined whether these ERPs (responses to synthetic consonant-vowel…

Electroencephalographic power spectra were studied in two poor-reading adolescent groups (n=38), dysphonetic and phonetic. Significant Group x Hemisphere effects were found in the alpha and beta bands, with the phonetic group showing right greater than left asymmetry. Results suggest more circumscribed and mature processing in the phonetically…

Adults (N=58) with attention deficit hyperactivity disorder and 29 age-and education-matched controls were evaluated for right hemisphere dysfunction. Findings support the concept of right hemisphere dysfunction in a subset of patients with ADHD, although this subset did not represent a distinct clinical subgroup in terms of medication response,…

The exploratory study examined patterns of regional cerebral blood flow in a surface and a deep dyslexic during reading. Significant differences in gray matter blood flow were found between subjects and normal controls. Also differences existed between the surface and deep dyslexic in the distribution of cortical perfusion. (Author/DB)

Twelve males (ages 8-12) with phonological dyslexia were compared to 12 age-matched good readers and 12 reading-matched students. Results showed that dyslexia is not related to incomplete lateralization or to a failure to inhibit verbal processing in the right hemisphere during reading and writing. (Author/JDD)

The construct validity of Boder's typology of dyslexia was investigated using quantified electroencephalography with 39 children (ages 7-11) during a reading task and at rest. Results supported beta frequency differences in anticipated regions by dyslexia subtype during the reading task. However, the direction of difference hypothesis was not…

Forty children with dyslexia were treated with visual hemisphere-specific stimulation based on their subtype of dyslexia. Children with L-type dyslexia (hurried, inaccurate reading) who received treatment with anxiety-laden words made fewer substantive errors and more fragmentations on a text-reading task, compared to children who received…

Twenty-eight L-dyslexic and 26 P-dyslexic children (mean age of 9-10) received hemisphere-specific stimulation (HSS) by presentation of words to right and left fingers, respectively. Relative to controls, HSS-treated L-dyslexic subjects showed larger improvement of accuracy in text reading, whereas HSS-treated P-dyslexic subjects showed more…

A study provided specially designed hemisphere-specific stimulation (HSS) and hemisphere-alluding stimulation to 21 children categorized as P-type dyslexics (showing accurate but slow and fragmented reading) and 19 children categorized as L-type dyslexics (fast but inaccurate readers). Participants made gains on all reading measures, regardless of…