Search results for "MISMATCH NEGATIVITY"

Auditory duration discrimination in children with reading disorder, attention deficit or both

2009

Tiina Huttunen-Scott tutki väitöskirjassaan kuulonvaraisen keston erottelun ongelmien esiintymistä lapsilla, joilla on vaikeuksia joko lukemisessa, tarkkaavaisuudessa tai molemmissa. Kuullun erottelun ongelmat voivat vaikuttaa puheäänteiden hahmottamiseen ja prosessointiin ja johtaa vaikeuksiin lukemaan oppimisessa.Huttunen-Scott havaitsi kuullun keston erottelun olevan merkitsevästi heikentynyt lapsilla, joilla on lukemisvaikeuksia. Erottelu oli heikentynyt jopa laajemmin lapsilla, joilla on lukemisvaikeuksien ohella myös tarkkaavaisuuden ongelmia. Sen sijaan lapsilla, joilla on vain tarkkaavaisuuden ongelmia, erottelu ei ollut heikentynyt, mikä viittaa siihen, että kuulonvaraisen prosesso…

Electrophysiological correlates of memory-based visual change detection in humans

2005

Infant Event-Related Potentials to Speech are Associated with Prelinguistic Development

2020

Highlights • Speech processing and prelinguistic skills studied in a large longitudinal sample. • Auditory ERPs predicted prelinguistic development in infancy in LCS models. • P1 amplitude at 6 months predicted prelinguistic development between 6 and 12 months. • MMR to a frequency change was associated with prelinguistic skills at 6 months. • Infants’ neural speech processing can help to predict early language development.

The role of musical aptitude and language skills in preattentive duration processing in school-aged children

2009

We examined 10-12-year old elementary school children's ability to preattentively process sound durations in music and speech stimuli. In total, 40 children had either advanced foreign language production skills and higher musical aptitude or less advanced results in both musicality and linguistic tests. Event-related potential (ERP) recordings of the mismatch negativity (MMN) show that the duration changes in musical sounds are more prominently and accurately processed than changes in speech sounds. Moreover, children with advanced pronunciation and musicality skills displayed enhanced MMNs to duration changes in both speech and musical sounds. Thus, our study provides further evidence for…

Cortical processing of musical sounds in children with Cochlear Implants

2012

Abstract Objective We studied the neurocognitive mechanisms of musical instrument sound perception in children with Cochlear Implants (CIs) and in children with normal hearing (NH). Methods ERPs were recorded in a new multi-feature change-detection paradigm. Three magnitudes of change in fundamental frequency, musical instrument, duration, intensity increments and decrements, and presence of a temporal gap were presented amongst repeating 295 Hz piano tones. Independent Component Analysis was utilized to remove artifacts caused by the Cochlear Implants. Results The ERPs were similar in the two groups across all perceptual dimensions except for intensity increment deviants. CI children had s…

Reading skill and neural processing accuracy improvement after a 3-hour intervention in preschoolers with difficulties in reading-related skills

2012

This study aimed at determining whether an intervention game developed for strengthening phonological awareness has a remediating effect on reading skills and central auditory processing in 6-year-old preschool children with difficulties in reading-related skills. After a 3-hour training only, these children made a greater progress in reading-related skills than did their matched controls who did mathematical exercises following comparable training format. Furthermore, the results suggest that this brief intervention might be beneficial in modulating the neural basis of phonetic discrimination as an enhanced speech-elicited mismatch negativity (MMN) was seen in the intervention group, indic…

Memory-Based Mismatch Response to Frequency Changes in Rats

2011

Any occasional changes in the acoustic environment are of potential importance for survival. In humans, the preattentive detection of such changes generates the mismatch negativity (MMN) component of event-related brain potentials. MMN is elicited to rare changes (‘deviants’) in a series of otherwise regularly repeating stimuli (‘standards’). Deviant stimuli are detected on the basis of a neural comparison process between the input from the current stimulus and the sensory memory trace of the standard stimuli. It is, however, unclear to what extent animals show a similar comparison process in response to auditory changes. To resolve this issue, epidural potentials were recorded above the pr…

Processing of word stress related acoustic information : A multi-feature MMN study

2016

In the present study, we investigated the processing of word stress related acoustic features in a word context. In a passive oddball multi-feature MMN experiment, we presented a disyllabic pseudo-word with two acoustically similar syllables as standard stimulus, and five contrasting deviants that differed from the standard in that they were either stressed on the first syllable or contained a vowel change. Stress was realized by an increase of f0, intensity, vowel duration or consonant duration. The vowel change was used to investigate if phonemic and prosodic changes elicit different MMN components. As a control condition, we presented non-speech counterparts of the speech stimuli. Result…

Neurophysiology in preschool improves behavioral prediction of reading ability throughout primary school.

2009

BACKGROUND: More struggling readers could profit from additional help at the beginning of reading acquisition if dyslexia prediction were more successful. Currently, prediction is based only on behavioral assessment of early phonological processing deficits associated with dyslexia, but it might be improved by adding brain-based measures. METHODS: In a 5-year longitudinal study of children with (n = 21) and without (n = 23) familial risk for dyslexia, we tested whether neurophysiological measures of automatic phoneme and tone deviance processing obtained in kindergarten would improve prediction of reading over behavioral measures alone. RESULTS: Together, neurophysiological and behavioral m…

Human brain ages with hierarchy-selective attenuation of prediction errors

2020

Abstract From the perspective of predictive coding, our brain embodies a hierarchical generative model to realize perception, which proactively predicts the statistical structure of sensory inputs. How are these predictive processes modified as we age? Recent research suggested that aging leads to decreased weighting of sensory inputs and increased reliance on predictions. Here we investigated whether this age-related shift from sensorium to predictions occurs at all levels of hierarchical message passing. We recorded the electroencephalography responses with an auditory local–global paradigm in a cohort of 108 healthy participants from 3 groups: seniors, adults, and adolescents. The detect…