Auditory processing in children with specific language impairment (SLI) : an electrophysiological study ; Auditive Verarbeitung bei Kindern mit Spezifischer Sprachentwicklungsstörung (SSES) : eine elektrophysiologische Studie
For several decades, the etiology of Specific Language Impairment (SLI) has been associated with an auditory processing deficit. A failure to perceive and process verbal and non-verbal material has been theorized as responsible for the disruption of...
mehr
|
Volltext:
|
|
|
Zitierfähiger Link:
|
|
|
For several decades, the etiology of Specific Language Impairment (SLI) has been associated with an auditory processing deficit. A failure to perceive and process verbal and non-verbal material has been theorized as responsible for the disruption of normal language development in affected children. The aim of this thesis was to contribute to the current understanding of the nature of the auditory processing deficit by applying electrophysiological methods, in particular the Mismatch Negativity (MMN). The MMN is an attention-independent component of the event-related potential (ERP) that is particularly suited to the investigation of auditory processing in clinical populations. A total of 48 boys between the ages of 7-11 underwent behavioral testing. Criteria for inclusion were a non-verbal IQ above 85 and no further disorders as well as 2 SD below the mean on an expressive or receptive language test for children with SLI. Thus, 13 control children and 15 children with SLI underwent electrophysiological testing. Four different MMN-paradigms were applied that were expected to show differences between the clinical group and the controls: A sine tone paradigm investigated the frequency discrimination abilities of SLI children (700 Hz versus 750 Hz tones), two different minimal pair paradigms examined speech-specific processing ("Bass" versus "Bus" and "Riss" versus "Biss"), and a non-verbal rule paradigm tested the extraction of a rule (15 ascending and 15 descending tone pairs). The frequency discrimination differences and the lexical processing differences between children with SLI and controls were confirmed, while contrary to the hypothesis, the results of the rule-extraction paradigm did not show group differences. ; Seit einigen Jahrzehnten wird als Ursache der Spezifischen Sprachentwicklungsstörung (SSES) ein auditives Verarbeitungsdefizit diskutiert. Es wird angenommen, dass dieses Defizit Auswirkungen auf die gesamte Sprachentwicklung der betroffenen Kinder hat und für ihre Schwierigkeiten bei der ...
|
