P300 event-related potentials in children with dyslexia

Papagiannopoulou, Eleni A.; Lagopoulos, Jim

doi:10.1007/s11881-016-0122-6

Cited by 18 publications

(15 citation statements)

References 29 publications

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“…The ERP approach involves fitting the participant with a snug sensor net designed to measure electrical activity generated in the brain in response to a specific sensory, cognitive or motor event (Polich, 2007). The resulting brain wave data are referred to as event related potentials (ERPs) and have been used to examine the underlying neural correlates of dyslexia (Papagiannopoulou & Lagopoulos, 2017). The non-invasive nature of ERPs makes it an appealing measure, which can provide complementary information to standard behavioral responses.…”

Section: The Current Studymentioning

confidence: 99%

Atypical predictive processing during visual statistical learning in children with developmental dyslexia: an event-related potential study

2018

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Previous research suggests that individuals with developmental dyslexia perform below typical readers on non-linguistic cognitive tasks involving the learning and encoding of statistical-sequential patterns. However, the neural mechanisms underlying such a deficit have not been well examined. The aim of the present study was to investigate the event-related potential (ERP) correlates of sequence processing in a sample of children diagnosed with dyslexia using a non-linguistic visual statistical learning paradigm. Whereas the response time data suggested that both typical and atypical readers learned the statistical patterns embedded in the task, the ERP data suggested otherwise. Specifically, ERPs of the typically developing children (n = 12) showed a P300-like response indicative of learning, whereas the children diagnosed with a reading disorder (n = 8) showed no such ERP effects. These results may be due to intact implicit motor learning in the children with dyslexia but delayed attention-dependent predictive processing. These findings are consistent with other evidence suggesting that differences in statistical learning ability might underlie some of the reading deficits observed in developmental dyslexia.

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Section: The Current Studymentioning

confidence: 99%

Atypical predictive processing during visual statistical learning in children with developmental dyslexia: an event-related potential study

2018

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“…This finding suggests that maturation of non-speech auditory processing may be delayed, which contributes neurological evidence to the behavioral-based account presented by Wang et al (2017) . Furthermore, Papagiannopoulou and Lagopoulos (2017) reported a reduced P3 amplitude and localization response in children with RD, suggesting a delayed processing speed, and a diminished processing capacity.…”

Section: Introductionmentioning

confidence: 97%

Atypical Frequency Sweep Processing in Chinese Children With Reading Difficulties: Evidence From Magnetoencephalography

et al. 2020

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Chinese lexical tones determine word meaning and are crucial in reading development. Reduced tone awareness is widely reported in children with reading difficulties (RD). Lexical-tone processing requires sensitivity to frequency-modulated sound changes. The present study investigates whether reduced tone awareness in children with RD is reflected in basic auditory processing and the level at which the breakdown occurs. Magnetoencephalographic techniques and an oddball paradigm were used to elicit auditory-related neural responses. Five frequency sweep conditions were established to mirror the frequency fluctuation in Chinese lexical tones, including one standard (level) sweep and four deviant sweeps (fast-up, fast-down, slow-up, and slowdown). A total of 14 Chinese-speaking children aged 9-12 years with RD and 13 agematched typically developing children were recruited. The participants completed a magnetoencephalographic data acquisition session, during which they watched a silent cartoon and the auditory stimuli were presented in a pseudorandomized order. The results revealed that the significant between-group difference was caused by differences in the level of auditory sensory processing, reflected by the P1m component elicited by the slow-up frequency sweep. This finding indicated that auditory sensory processing was affected by both the duration and the direction of a frequency sweep. Sensitivity to changes in duration and frequency is crucial for the processing of suprasegmental features. Therefore, this sensory deficit might be associated with difficulties discriminating two tones with an upward frequency contour in Chinese.

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“…Central auditory processing was intact in patients with dyslexia, as no significant changes were revealed in P300 amplitudes and latencies ( 13 ). Shorter amplitudes and prolonged latencies of P300 were assumed to be a result of the lack of mental workload and delayed processing in dyslexia ( 14 ). The outcome of P300 components were all from single auditory stimuli and a variety of experimental paradigms were used among different studies.…”

Section: Introductionmentioning

confidence: 99%

Post-Attentive Integration and Topographic Map Distribution During Audiovisual Processing in Dyslexia: A P300 Event-Related Component Analysis

Ali

Begum

Reza

et al. 2020

MJMS

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Background Research on audiovisual post-attentive integration has been carried out using a variety of experimental paradigms and experimental groups but not yet studied in dyslexia. We investigated post-attentive integration and topographic voltage distribution in children with dyslexia by analysing the P300 event-related potential (ERP) component. Methods We used a 128-child ERP net for the ERP experiment. Two types of stimuli were presented as either congruent or incongruent stimuli. Congruent stimuli included a matching auditory sound with an animal image, whereas incongruent stimuli included unmatched animal sounds. A total of 24 age-matched children were recruited in the control ( n = 12) and dyslexia ( n = 12) groups. Children pressed button ‘1’ or ‘2’ when presented with congruent or incongruent stimuli, respectively. The P300 amplitudes and latencies with topographic voltage distribution were analysed for both groups. Results The dyslexia group evoked significantly higher P300 amplitudes at the T4 area than the control group. No significant differences were found in cases of P300 latency. Moreover, the dyslexia group demonstrated a higher intensity of P300 voltage distribution in the right parietal and left occipital areas than the control group. Conclusion Post-attentive integration for children with dyslexia is higher and that this integration process implicated the parietal and occipital areas.

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P300 event-related potentials in children with dyslexia

Cited by 18 publications

References 29 publications

Atypical predictive processing during visual statistical learning in children with developmental dyslexia: an event-related potential study

Atypical predictive processing during visual statistical learning in children with developmental dyslexia: an event-related potential study

Atypical Frequency Sweep Processing in Chinese Children With Reading Difficulties: Evidence From Magnetoencephalography

Post-Attentive Integration and Topographic Map Distribution During Audiovisual Processing in Dyslexia: A P300 Event-Related Component Analysis

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