Das Potential der frequenz-spezifischen Neuromodulation für die Untersuchung und Verbesserung der Sprachverarbeitung im Gehirn

Abstract

The acoustic speech signal cannot be clearly divided into individual words and rather resembles a continuous stream of sounds. Nevertheless, there are temporal regularities that may be used in perception. The duration of language elements such as phonemes, syllables, words and phrases is also reflected in the neural response patterns during speech perception. Impairments in language functions are often accompanied by changes in these neural response patterns. Despite these findings, it is not clear whether there is a causal relationship between the neural response and the quality of speech perception. This article introduces the relevant components of the acoustic speech signal, describes the neuronal response to speech stimuli in the healthy brain and shows which neurophysiological changes are associated with speech dysfunction. Various methods of non-invasive neuromodulation are presented, and first results are presented, which indicate that language functions may be improved through targeted neuromodulation.