Neural correlates of subjective comprehension of noise-vocoded speech
| Autor: | Hiroshi Riquimaroux, Shota Murai |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty Audiology Auditory cortex Lateralization of brain function 03 medical and health sciences 0302 clinical medicine medicine Humans Speech Temporal cortex Neural correlates of consciousness Brain Mapping medicine.diagnostic_test Magnetic Resonance Imaging Sensory Systems Comprehension 030104 developmental biology Laterality Speech Perception Psychology Functional magnetic resonance imaging Noise 030217 neurology & neurosurgery Sentence |
| Zdroj: | Hearing research. 405 |
| ISSN: | 1878-5891 |
| Popis: | Under an acoustically degraded condition, the degree of speech comprehension fluctuates within individuals. Understanding the relationship between such fluctuations in comprehension and neural responses might reveal perceptual processing for distorted speech. In this study we investigated the cerebral activity associated with the degree of subjective comprehension of noise-vocoded speech sounds (NVSS) using functional magnetic resonance imaging. Our results indicate that higher comprehension of NVSS sentences was associated with greater activation in the right superior temporal cortex, and that activity in the left inferior frontal gyrus (Broca's area) was increased when a listener recognized words in a sentence they did not fully comprehend. In addition, results of laterality analysis demonstrated that recognition of words in an NVSS sentence led to less lateralized responses in the temporal cortex, though a left-lateralization was observed when no words were recognized. The data suggest that variation in comprehension within individuals can be associated with changes in lateralization in the temporal auditory cortex. |
| Databáze: | OpenAIRE |
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