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https://www.readbyqxmd.com/read/28223953/predicting-future-reading-problems-based-on-pre-reading-auditory-measures-a-longitudinal-study-of-children-with-a-familial-risk-of-dyslexia
#1
Jeremy M Law, Maaike Vandermosten, Pol Ghesquière, Jan Wouters
Purpose: This longitudinal study examines measures of temporal auditory processing in pre-reading children with a family risk of dyslexia. Specifically, it attempts to ascertain whether pre-reading auditory processing, speech perception, and phonological awareness (PA) reliably predict later literacy achievement. Additionally, this study retrospectively examines the presence of pre-reading auditory processing, speech perception, and PA impairments in children later found to be literacy impaired. Method: Forty-four pre-reading children with and without a family risk of dyslexia were assessed at three time points (kindergarten, first, and second grade)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28182973/dyslexia-risk-gene-relates-to-representation-of-sound-in-the-auditory-brainstem
#2
Nicole E Neef, Bent Müller, Johanna Liebig, Gesa Schaadt, Maren Grigutsch, Thomas C Gunter, Arndt Wilcke, Holger Kirsten, Michael A Skeide, Indra Kraft, Nina Kraus, Frank Emmrich, Jens Brauer, Johannes Boltze, Angela D Friederici
Dyslexia is a reading disorder with strong associations with KIAA0319 and DCDC2. Both genes play a functional role in spike time precision of neurons. Strikingly, poor readers show an imprecise encoding of fast transients of speech in the auditory brainstem. Whether dyslexia risk genes are related to the quality of sound encoding in the auditory brainstem remains to be investigated. Here, we quantified the response consistency of speech-evoked brainstem responses to the acoustically presented syllable [da] in 159 genotyped, literate and preliterate children...
January 17, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28131533/auditory-brainstem-responses-to-stop-consonants-predict-literacy
#3
Nicole E Neef, Gesa Schaadt, Angela D Friederici
OBJECTIVE: Precise temporal coding of speech plays a pivotal role in sound processing throughout the central auditory system, which, in turn, influences literacy acquisition. The current study tests whether an electrophysiological measure of this precision predicts literacy skills. METHODS: Complex auditory brainstem responses were analysed from 62 native German-speaking children aged 11-13years. We employed the cross-phaseogram approach to compute the quality of the electrophysiological stimulus contrast [da] and [ba]...
December 18, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28115055/dyslexics-faster-decay-of-implicit-memory-for-sounds-and-words-is-manifested-in-their-shorter-neural-adaptation
#4
Sagi Jaffe-Dax, Or Frenkel, Merav Ahissar
Dyslexia is a prevalent reading disability whose underlying mechanisms are still disputed. We studied the neural mechanisms underlying dyslexia using a simple frequency-discrimination task. Though participants were asked to compare the two tones in each trial, implicit memory of previous trials affected their responses. We hypothesized that implicit memory decays faster among dyslexics. We tested this by increasing the temporal intervals between consecutive trials, and by measuring the behavioral impact and ERP responses from the auditory cortex...
January 24, 2017: ELife
https://www.readbyqxmd.com/read/28114605/auditory-stimulus-processing-and-task-learning-are-adequate-in-dyslexia-but-benefits-from-regularities-are-reduced
#5
Luba Daikhin, Ofri Raviv, Merav Ahissar
Purpose: The reading deficit for people with dyslexia is typically associated with linguistic, memory, and perceptual-discrimination difficulties, whose relation to reading impairment is disputed. We proposed that automatic detection and usage of serial sound regularities for individuals with dyslexia is impaired (anchoring deficit hypothesis), leading to the formation of less reliable sound predictions. Agus, Carrión-Castillo, Pressnitzer, and Ramus, (2014) reported seemingly contradictory evidence by showing similar performance by participants with and without dyslexia in a demanding auditory task that contained task-relevant regularities...
February 1, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28011436/phonological-abilities-in-literacy-impaired-children-brain-potentials-reveal-deficient-phoneme-discrimination-but-intact-prosodic-processing
#6
Claudia Männel, Gesa Schaadt, Franziska K Illner, Elke van der Meer, Angela D Friederici
Intact phonological processing is crucial for successful literacy acquisition. While individuals with difficulties in reading and spelling (i.e., developmental dyslexia) are known to experience deficient phoneme discrimination (i.e., segmental phonology), findings concerning their prosodic processing (i.e., suprasegmental phonology) are controversial. Because there are no behavior-independent studies on the underlying neural correlates of prosodic processing in dyslexia, these controversial findings might be explained by different task demands...
February 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/27990724/audio-visual-speech-in-noise-perception-in-dyslexia
#7
Thijs van Laarhoven, Mirjam Keetels, Lemmy Schakel, Jean Vroomen
Individuals with developmental dyslexia (DD) may experience, besides reading problems, other speech-related processing deficits. Here, we examined the influence of visual articulatory information (lip-read speech) at various levels of background noise on auditory word recognition in children and adults with DD. We found that children with a documented history of DD have deficits in their ability to gain benefit from lip-read information that disambiguates noise-masked speech. We show with another group of adult individuals with DD that these deficits persist into adulthood...
December 18, 2016: Developmental Science
https://www.readbyqxmd.com/read/27940605/temporal-processing-development-in-chinese-primary-school-aged-children-with-dyslexia
#8
Li-Chih Wang, Hsien-Ming Yang
This study aimed to investigate the development of visual and auditory temporal processing among children with and without dyslexia and to examine the roles of temporal processing in reading and reading-related abilities. A total of 362 Chinese children in Grades 1-6 were recruited from Taiwan. Half of the children had dyslexia, and the other half were typically developing children who matched the dyslexic group on age, intelligence, and gender. Our results indicate that for typically developing children, the visual and auditory modalities follow the same developmental trend: The children in first and second grades performed significantly worse than the older children...
December 9, 2016: Journal of Learning Disabilities
https://www.readbyqxmd.com/read/27890803/neural-signatures-of-phonological-deficits-in-chinese-developmental-dyslexia
#9
Fan Cao, Xin Yan, Zhao Wang, Yanni Liu, Jin Wang, Gregory J Spray, Yuan Deng
There has been debate on whether phonological deficits explain reading difficulty in Chinese, since Chinese is a logographic language which does not employ grapheme-phoneme-correspondence rules and remote memorization seems to be the main method to acquire reading. In the current study, we present neuroimaging evidence that the phonological deficit is also a signature of Chinese dyslexia. Specifically, we found that Chinese children with dyslexia (DD) showed reduced brain activation in the left dorsal inferior frontal gyrus (dIFG) when compared to both age-matched controls (AC) and reading-matched controls (RC) during an auditory rhyming judgment task...
February 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/27843461/contra-lateral-auditory-brainstem-responses-in-dyslexia
#10
Mehdi Akbari, Mohammad Taghi Joghataei, Akram Noorbakht, Mohammad Sadegh Jenabi
OBJECTIVE: Developmental care comprises a wide range of medical and nursing interventions used in the neonatal intensive care unit (NICU) to mitigate and reduce stressors affecting preterm or ill neonates. Because patient satisfaction survey is a valuable quality improvement tool, we aimed to develop and test the psychometric properties of a tool for measuring parent satisfaction of developmental care in the NICU. MATERIALS &METHODS: In this psychometric methodological study, the item pool and initial questionnaire were designed based on a comprehensive literature review and exploring NICU parent satisfaction questionnaires...
2016: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/27833037/atypical-neural-synchronization-to-speech-envelope-modulations-in-dyslexia
#11
Astrid De Vos, Sophie Vanvooren, Jolijn Vanderauwera, Pol Ghesquière, Jan Wouters
A fundamental deficit in the synchronization of neural oscillations to temporal information in speech could underlie phonological processing problems in dyslexia. In this study, the hypothesis of a neural synchronization impairment is investigated more specifically as a function of different neural oscillatory bands and temporal information rates in speech. Auditory steady-state responses to 4, 10, 20 and 40Hz modulations were recorded in normal reading and dyslexic adolescents to measure neural synchronization of theta, alpha, beta and low-gamma oscillations to syllabic and phonemic rate information...
January 2017: Brain and Language
https://www.readbyqxmd.com/read/27810845/comparison-of-regularity-detection-between-individuals-with-and-without-speech-in-noise-problems-using-electrophysiological-methods
#12
Mehmet Yaralı, Süha Yağcıoğlu, Ayşe Gül Güven, Songül Aksoy
OBJECTIVE: To analyze the cortical representations of auditory regularities and the relation between these representations and speech-in-noise (SIN) abilities and to compare two groups of participants with different SIN abilities on these cortical measures. MATERIALS AND METHODS: In total, 22 participants aged 20-40 years with normal hearing and without noise exposure, brain stem level-processing issues, neurological/psychiatric issues, or related medication were presented with three different stimuli resembling auditory regularities appearing after random sounds as well as a random series of sounds...
August 1, 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27785865/mothers-speak-differently-to-infants-at-risk-for-dyslexia
#13
Marina Kalashnikova, Usha Goswami, Denis Burnham
Dyslexia is a neurodevelopmental disorder manifested in deficits in reading and spelling skills that is consistently associated with difficulties in phonological processing. Dyslexia is genetically transmitted, but its manifestation in a particular individual is thought to depend on the interaction of epigenetic and environmental factors. We adopt a novel interactional perspective on early linguistic environment and dyslexia by simultaneously studying two pre-existing factors, one maternal and one infant, that may contribute to these interactions; and two behaviours, one maternal and one infant, to index the effect of these factors...
October 27, 2016: Developmental Science
https://www.readbyqxmd.com/read/27774757/the-influences-and-outcomes-of-phonological-awareness-a-study-of-ma-pa-and-auditory-processing-in-pre-readers-with-a-family-risk-of-dyslexia
#14
Jeremy M Law, Jan Wouters, Pol Ghesquière
The direct influence of phonological awareness (PA) on reading outcomes has been widely demonstrated, yet PA may also exert indirect influence on reading outcomes through other cognitive variables such as morphological awareness (MA). However, PA's own development is dependent and influenced by many extraneous variables such as auditory processing, which could ultimately impact reading outcomes. In a group of pre-reading children with a family risk of dyslexia and low-risk controls, this study sets out to answer questions surrounding PA's relationship at various grain sizes (syllable, onset/rime and phoneme) with measures of auditory processing (frequency modulation (FM) and an amplitude rise-time task (RT)) and MA, independent of reading experience...
October 23, 2016: Developmental Science
https://www.readbyqxmd.com/read/27761877/p300-event-related-potentials-in-children-with-dyslexia
#15
Eleni A Papagiannopoulou, Jim Lagopoulos
To elucidate the timing and the nature of neural disturbances in dyslexia and to further understand the topographical distribution of these, we examined entire brain regions employing the non-invasive auditory oddball P300 paradigm in children with dyslexia and neurotypical controls. Our findings revealed abnormalities for the dyslexia group in (i) P300 latency, globally, but greatest in frontal brain regions and (ii) decreased P300 amplitude confined to the central brain regions (Fig. 1). These findings reflect abnormalities associated with a diminished capacity to process mental workload as well as delayed processing of this information in children with dyslexia...
October 19, 2016: Annals of Dyslexia
https://www.readbyqxmd.com/read/27659413/difficulties-in-auditory-organization-as-a-cause-of-reading-backwardness-an-auditory-neuroscience-perspective
#16
Victoria Leong, Usha Goswami
Over 30 years ago, it was suggested that difficulties in the 'auditory organization' of word forms in the mental lexicon might cause reading difficulties. It was proposed that children used parameters such as rhyme and alliteration to organize word forms in the mental lexicon by acoustic similarity, and that such organization was impaired in developmental dyslexia. This literature was based on an 'oddity' measure of children's sensitivity to rhyme (e.g. wood, book, good) and alliteration (e.g. sun, sock, rag)...
September 22, 2016: Developmental Science
https://www.readbyqxmd.com/read/27551263/improving-dorsal-stream-function-in-dyslexics-by-training-figure-ground-motion-discrimination-improves-attention-reading-fluency-and-working-memory
#17
Teri Lawton
There is an ongoing debate about whether the cause of dyslexia is based on linguistic, auditory, or visual timing deficits. To investigate this issue three interventions were compared in 58 dyslexics in second grade (7 years on average), two targeting the temporal dynamics (timing) of either the auditory or visual pathways with a third reading intervention (control group) targeting linguistic word building. Visual pathway training in dyslexics to improve direction-discrimination of moving test patterns relative to a stationary background (figure/ground discrimination) significantly improved attention, reading fluency, both speed and comprehension, phonological processing, and both auditory and visual working memory relative to controls, whereas auditory training to improve phonological processing did not improve these academic skills significantly more than found for controls...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27520749/atypical-right-hemisphere-response-to-slow-temporal-modulations-in-children-with-developmental-dyslexia
#18
Simone Cutini, Dénes Szűcs, Natasha Mead, Martina Huss, Usha Goswami
Phase entrainment of neuronal oscillations is thought to play a central role in encoding speech. Children with developmental dyslexia show impaired phonological processing of speech, proposed theoretically to be related to atypical phase entrainment to slower temporal modulations in speech (<10Hz). While studies of children with dyslexia have found atypical phase entrainment in the delta band (~2Hz), some studies of adults with developmental dyslexia have shown impaired entrainment in the low gamma band (~35-50Hz)...
December 2016: NeuroImage
https://www.readbyqxmd.com/read/27471442/neural-biomarkers-for-dyslexia-adhd-and-add-in-the-auditory-cortex-of-children
#19
Bettina Serrallach, Christine Groß, Valdis Bernhofs, Dorte Engelmann, Jan Benner, Nadine Gündert, Maria Blatow, Martina Wengenroth, Angelika Seitz, Monika Brunner, Stefan Seither, Richard Parncutt, Peter Schneider, Annemarie Seither-Preisler
Dyslexia, attention deficit hyperactivity disorder (ADHD), and attention deficit disorder (ADD) show distinct clinical profiles that may include auditory and language-related impairments. Currently, an objective brain-based diagnosis of these developmental disorders is still unavailable. We investigated the neuro-auditory systems of dyslexic, ADHD, ADD, and age-matched control children (N = 147) using neuroimaging, magnetencephalography and psychoacoustics. All disorder subgroups exhibited an oversized left planum temporale and an abnormal interhemispheric asynchrony (10-40 ms) of the primary auditory evoked P1-response...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27148102/early-stages-of-sensory-processing-but-not-semantic-integration-are-altered-in-dyslexic-adults
#20
Patrícia B Silva, Karen Ueki, Darlene G Oliveira, Paulo S Boggio, Elizeu C Macedo
The aim of this study was to verify which stages of language processing are impaired in individuals with dyslexia. For this, a visual-auditory crossmodal task with semantic judgment was used. The P100 potentials were chosen, related to visual processing and initial integration, and N400 potentials related to semantic processing. Based on visual-auditory crossmodal studies, it is understood that dyslexic individuals present impairments in the integration of these two types of tasks and impairments in processing spoken and musical auditory information...
2016: Frontiers in Psychology
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