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Hyperlexia

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https://www.readbyqxmd.com/read/24968009/a-girl-with-tuberous-sclerosis-complex-presenting-with-severe-epilepsy-and-electrical-status-epilepticus-during-sleep-and-with-high-functioning-autism-and-mutism
#1
Iliyana Pacheva, Georgi Panov, Christopher Gillberg, Brian Neville
Most patients with tuberous sclerosis complex (TSC) suffer from epilepsy, and many have cognitive and behavioral problems like severe intellectual disability, autism, and hyperactivity. Only rare patients with TSC and autism have a normal intelligence quotient. We report a 13-year-old girl with definite TSC who had early-onset severe epilepsy, autistic behavior, and moderate developmental delay. By school age, however, she had normal intelligence; her intelligence quotient was at least 70 based on a Stanford-Binet test that she refused to complete...
June 2014: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/24449604/reading-and-math-achievement-profiles-and-longitudinal-growth-trajectories-of-children-with-an-autism-spectrum-disorder
#2
Xin Wei, Elizabeth R A Christiano, Jennifer W Yu, Mary Wagner, Donna Spiker
This study examined the reading and math achievement profiles and longitudinal growth trajectories of a nationally representative sample of children ages 6 through 9 with an autism spectrum disorder. Four distinct achievement profiles were identified: higher-achieving (39%), hyperlexia (9%), hypercalculia (20%) and lower-achieving (32%). Children with hypercalculia and lower-achieving profiles were more likely to be from low socioeconomic families and had lower functional cognitive skills than the higher-achieving profile...
February 2015: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/24408490/reading-skills-in-children-diagnosed-with-hyperlexia-case-reports
#3
Dionísia Aparecida Cusin Lamônica, Mariana Germano Gejão, Lívia Maria do Prado, Amanda Tragueta Ferreira
Hyperlexia is characterized by spontaneous and early acquisition of reading skills, manifested before the age of five, without any formal education. Expressive and receptive language deficit, excellent memory, delayed language skills, echolalia, perseverations, and difficulty to understand verbal contexts, are common symptoms in individuals with hyperlexia and global developmental disorders, including Asperger's syndrome. The aim of this study was to describe the reading skills of individuals with hyperlexia...
2013: CoDAS
https://www.readbyqxmd.com/read/24243462/hyperlexia-and-dyslexia-a-family-study
#4
J M Healy, D M Aram
The condition of hyperlexia, often associated with autism, is a rare disorder in which children read words precociously but show little comprehension, markedly poor language, behavioral, and interpersonal skills. The relationship of hyperlexia and dyslexia has never been investigated, although suggestions have been made that the two conditions may be related. In light of current research on familial factors in autism, language disorder, dyslexia, and, recently, hyperlexia, this study investigated family histories of twelve hyperlexic children in regard to language, reading, writing, spelling, and other learning problems, handedness, and presence of allergies...
January 1986: Annals of Dyslexia
https://www.readbyqxmd.com/read/23962602/the-development-of-a-multimedia-online-language-assessment-tool-for-young-children-with-autism
#5
Chu-Sui Lin, Shu-Hui Chang, Wen-Ying Liou, Yu-Show Tsai
This study aimed to provide early childhood special education professionals with a standardized and comprehensive language assessment tool for the early identification of language learning characteristics (e.g., hyperlexia) of young children with autism. In this study, we used computer technology to develop a multi-media online language assessment tool that presents auditory or visual stimuli. This online comprehensive language assessment consists of six subtests: decoding, homographs, auditory vocabulary comprehension, visual vocabulary comprehension, auditory sentence comprehension, and visual sentence comprehension...
October 2013: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/23918440/savant-syndrome-realities-myths-and-misconceptions
#6
Darold A Treffert
It was 126 years ago that Down first described savant syndrome as a specific condition and 70 years ago that Kanner first described Early Infantile Autism. While as many as one in ten autistic persons have savant abilities, such special skills occur in other CNS conditions as well such that approximately 50 % of cases of savant syndrome have autism as the underlying developmental disability and 50 % are associated with other disabilities. This paper sorts out realities from myths and misconceptions about both savant syndrome and autism spectrum disorders (ASD) that have developed through the years...
March 2014: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/23722887/what-are-the-mechanisms-behind-exceptional-word-reading-ability-in-hyperlexia-evidence-from-a-4-year-old-hyperlexic-boy-s-invented-spellings
#7
LETTER
Cláudia Cardoso-Martins, Daniela Teixeira Gonçalves, Caroline Greiner de Magalhães
No abstract text is available yet for this article.
December 2013: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/23219745/veridical-mapping-in-the-development-of-exceptional-autistic-abilities
#8
REVIEW
Laurent Mottron, Lucie Bouvet, Anna Bonnel, Fabienne Samson, Jacob A Burack, Michelle Dawson, Pamela Heaton
Superior perception, peaks of ability, and savant skills are often observed in the autistic phenotype. The enhanced perceptual functioning model (Mottron et al., 2006a) emphasizes the increased role and autonomy of perceptual information processing in autistic cognition. Autistic abilities also involve enhanced pattern detection, which may develop through veridical mapping across isomorphic perceptual and non-perceptual structures (Mottron et al., 2009). In this paper, we elaborate veridical mapping as a specific mechanism which can explain the higher incidence of savant abilities, as well as other related phenomena, in autism...
February 2013: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/22324205/hyperlexia-iii-separating-autistic-like-behaviors-from-autistic-disorder-assessing-children-who-read-early-or-speak-late
#9
REVIEW
Darold A Treffert
Three conditions -- Hyperlexia (children who read early), Einstein syndrome (children who speak late), and "Blindisms" (in children with impaired vision) -- can present with "autistic-like" symptoms, traits, and behaviors that need to be differentiated from autistic disorder. Careful attention to that critical difference has important epidemiologic, etiologic, treatment, and outcome implications. This paper describes these conditions, makes suggestions for proper identification that can prevent unnecessary worry and distress for parents and other caregivers, and suggests appropriate management...
December 2011: WMJ: Official Publication of the State Medical Society of Wisconsin
https://www.readbyqxmd.com/read/21465627/enhanced-visual-functioning-in-autism-an-ale-meta-analysis
#10
REVIEW
Fabienne Samson, Laurent Mottron, Isabelle Soulières, Thomas A Zeffiro
Autistics often exhibit enhanced perceptual abilities when engaged in visual search, visual discrimination, and embedded figure detection. In similar fashion, while performing a range of perceptual or cognitive tasks, autistics display stronger physiological engagement of the visual system than do non-autistics. To account for these findings, the Enhanced Perceptual Functioning Model proposes that enhanced autistic performance in basic perceptual tasks results from stronger engagement of sensory processing mechanisms, a situation that may facilitate an atypically prominent role for perceptual mechanisms in supporting cognition...
July 2012: Human Brain Mapping
https://www.readbyqxmd.com/read/20678759/developmental-dissociations-between-lexical-reading-and-comprehension-evidence-from-two-cases-of-hyperlexia
#11
Anne Castles, Alison Crichton, Margot Prior
We report two cases of developmental hyperlexia - JY and AD - who performed at normal levels or above in converting print into speech, but who were very impaired in spoken and written word comprehension. Our investigations focussed on whether these cases displayed evidence for normal acquisition of lexical reading skills, as indexed by unimpaired performance for age in reading aloud a set of irregular words, despite poor acquisition of semantic knowledge of the same words. In both cases, this dissociation was evident...
November 2010: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/20563785/foreign-language-learning-hyperlexia-and-early-word-recognition
#12
COMPARATIVE STUDY
R L Sparks, M Artzer
Children with hyperlexia read words spontaneously before the age of five, have impaired comprehension on both listening and reading tasks, and have word recognition skill above expectations based on cognitive and linguistic abilities. One student with hyperlexia and another student with higher word recognition than comprehension skills who started to read words at a very early age were followed over several years from the primary grades through high school when both were completing a second-year Spanish course...
January 2000: Annals of Dyslexia
https://www.readbyqxmd.com/read/20440742/dyslexia-and-hyperlexia-in-bilinguals
#13
R Malatesha Joshi, Prakash Padakannaya, S Nishanimath
This study explores the nature of reading difficulties of two bilinguals in Kannada and English, which vary in their orthographic depth and script layout. VN and MS manifest two different types of reading disabilities, dyslexia and hyperlexia, respectively. The performance of VN was below average on Kannada and English tests of phonemic awareness, spelling, and pseudoword naming. Despite his poor decoding skills, the listening comprehension skill both at the word level and at the sentence level of VN was within the normal range...
May 2010: Dyslexia: the Journal of the British Dyslexia Association
https://www.readbyqxmd.com/read/19585352/hyperlexia-and-ambient-echolalia-in-a-case-of-cerebral-infarction-of-the-left-anterior-cingulate-cortex-and-corpus-callosum
#14
Tadashi Suzuki, Shouichi Itoh, Mototaka Hayashi, Masako Kouno, Katsuhiko Takeda
We report the case of a 69-year-old woman with cerebral infarction in the left anterior cingulate cortex and corpus callosum. She showed hyperlexia, which was a distinctive reading phenomenon, as well as ambient echolalia. Clinical features also included complex disorders such as visual groping, compulsive manipulation of tools, and callosal disconnection syndrome. She read words written on the cover of a book and repeated words emanating from unrelated conversations around her or from hospital announcements...
October 2009: Neurocase
https://www.readbyqxmd.com/read/17347944/-asperger-s-syndrome-little-teachers-special-skills
#15
M C Etchepareborda, A Díaz-Lucero, M J Pascuale, L Abad-Mas, R Ruiz-Andrés
INTRODUCTION: Asperger's syndrome (AS) is characterised by its effects on reciprocal social interaction, verbal and non-verbal communication, difficulty in accepting changes, inflexible thinking and reduced fields of interest, but also by the presentation of special skills. DEVELOPMENT: On the occasion of the centenary of the birth of Hans Asperger, we briefly review the history of this researcher and offer a short description of the clinical features of the condition, including social interaction, communication, limited concerns and interests, routines and inflexibility, which are key points when it comes to reaching a diagnosis...
March 2, 2007: Revista de Neurologia
https://www.readbyqxmd.com/read/17131596/developmental-and-acquired-dyslexias
#16
REVIEW
Christine M Temple
Marshall (1984) highlighted potential parallels between children with developmental disorders of reading and adults who had acquired reading disorders. He advocated the use of a cognitive neuropsychological framework in the investigation of children with developmental abnormalities of cognition, including those with developmental dyslexias. Developmental phonological dyslexia has been extensively described and is a pervasive disorder. The relationship between reading difficulty and phonological difficulties evident in explicit oral phonological tasks continues to be a focus for debate...
August 2006: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/17048093/hyperlexia-in-children-with-autism-spectrum-disorders
#17
Tina M Newman, Donna Macomber, Adam J Naples, Tammy Babitz, Fred Volkmar, Elena L Grigorenko
We compared the reading-related skills of children with Autism Spectrum Disorders who have hyperlexia (ASD + HPL) with age-matched children with ASD without HPL (ASD - HPL) and with single-word reading-matched typically developing children (TYP). Children with ASD + HPL performed (1) better than did children with ASD - HPL on tasks of single-word reading and pseudoword decoding and (2) equivalently well compared to word-reading-matched TYP children on all reading-related tasks except reading comprehension. It appears that the general underlying model of single-word reading is the same in principle for "typical" and hyperlexic reading...
April 2007: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/16897396/patterns-of-reading-ability-in-children-with-autism-spectrum-disorder
#18
Kate Nation, Paula Clarke, Barry Wright, Christine Williams
This study investigated reading skills in 41 children with autism spectrum disorder. Four components of reading skill were assessed: word recognition, nonword decoding, text reading accuracy and text comprehension. Overall, levels of word and nonword reading and text reading accuracy fell within average range although reading comprehension was impaired. However, there was considerable variability across the sample with performance on most tests ranging from floor to ceiling levels. Some children read accurately but showed very poor comprehension, consistent with a hyperlexia reading profile; some children were poor at reading words and nonwords whereas others were unable to decode nonwords, despite a reasonable level of word reading skill...
October 2006: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/16843492/hyperlexia-in-spanish-speaking-children-report-of-2-cases-from-colombia-south-america
#19
Claudia Talero-Gutierrez
Hyperlexia is a condition rarely reported in Spanish-speaking children, characterized by the ability to recognize written words without formal training. We present two unrelated autistic children with hyperlexia from Colombia (South America) who were followed for 8 years with formal neuropsychological evaluations of language, motor skills, visual perception, attention and behavior. Both children taught themselves to read before 5 years of age but showed minimal comprehension; both displayed obsessional reading and difficulties in social skills and attention...
November 1, 2006: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/14715131/the-neural-basis-of-hyperlexic-reading-an-fmri-case-study
#20
Peter E Turkeltaub, D Lynn Flowers, Alyssa Verbalis, Martha Miranda, Lynn Gareau, Guinevere F Eden
Children with autism spectrum disorders in very rare cases display surprisingly advanced "hyperlexic" reading skills. Using functional magnetic resonance imaging (fMRI), we studied the neural basis of this precocious reading ability in a 9-year-old hyperlexic boy who reads 6 years in advance of his age. During covert reading, he demonstrated greater activity in the left inferior frontal and superior temporal cortices than both chronological age- and reading age-matched controls. Activity in the right inferior temporal sulcus was greater when compared to reading age-matched controls...
January 8, 2004: Neuron
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