Complexity-Based Analysis of the Difference Between Normal Subjects and Subjects with Stuttering in Speech Evoked Auditory Brainstem Response
| Autor: | Hamidreza Namazi, Sajad Jafari, Marjan Mozaffarilegha, Ali Akbar Tahaei |
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| Rok vydání: | 2018 |
| Předmět: |
Hurst exponent
medicine.medical_specialty Stuttering Significant difference Biomedical Engineering food and beverages General Medicine Stimulus (physiology) Audiology Linear analysis 03 medical and health sciences 0302 clinical medicine Auditory brainstem response 030220 oncology & carcinogenesis otorhinolaryngologic diseases medicine Brainstem medicine.symptom Psychology 030217 neurology & neurosurgery |
| Zdroj: | Journal of Medical and Biological Engineering. 39:490-497 |
| ISSN: | 2199-4757 1609-0985 |
| DOI: | 10.1007/s40846-018-0430-x |
| Popis: | Deficits in auditory processing are an assumed underlying mechanism in stuttering. Previous studies have demonstrated that speech evoked auditory brainstem response (s-ABR) is a reliable method to evaluate brainstem timing in clinical populations with persistent developmental stuttering (PDS). The examination of s-ABR signals to quantify differential complexities between PDS and normal subjects using linear analysis is unreliable. This prompted us to evaluate non-linear methods, which are more effective for conveying complex dynamics. The aim of the current study is to apply fractal dimension and the Hurst exponent to s-ABR signals in order to identify complexity differences between PDS and normal subjects who were stimulated with the synthetic/da/stimulus. Analysis of scaling exponents showed a statistically significant difference between the two groups. The s-ABR signal in subjects with stuttering becomes more complex due to stimulation. These findings are discussed in terms of dysfunctional sub-cortical activation in PDS populations. |
| Databáze: | OpenAIRE |
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