Unilateral Acoustic Degradation Delays Attentional Separation of Competing Speech
| Autor: | Frauke Kraus, Anna Ruhe, Malte Woestmann, Jonas Obleser, Sarah Tune |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Hearing loss medicine.medical_treatment Speech coding envelope Electroencephalography Audiology 050105 experimental psychology 03 medical and health sciences Speech and Hearing 0302 clinical medicine Cochlear implant otorhinolaryngologic diseases medicine Humans Speech Effective treatment 0501 psychology and cognitive sciences Active listening medicine.diagnostic_test 05 social sciences cochlear implant spectrotemporal response function Acoustics speech tracking Cochlear Implantation unilateral vocoding attention Cochlear Implants Acoustic Stimulation Otorhinolaryngology Interactive effects Speech Perception Original Article medicine.symptom Psychology 030217 neurology & neurosurgery Degradation (telecommunications) |
| Zdroj: | Trends in Hearing |
| ISSN: | 2331-2165 |
| DOI: | 10.1177/23312165211013242 |
| Popis: | Hearing loss is often asymmetric, such that hearing thresholds differ substantially between the two ears. The extreme case of such asymmetric hearing is single-sided deafness. A unilateral cochlear implant (CI) on the more severely impaired ear is an effective treatment to restore hearing. The interactive effects of unilateral acoustic degradation and spatial attention to one sound source in multi-talker situations are at present unclear. Here, we simulated some features of listening with a unilateral CI in young, normal-hearing listeners (N = 22) who were presented with 8-band noise-vocoded speech to one ear and intact speech to the other ear. Neural responses were recorded in the electroencephalogram (EEG) to obtain the spectro-temporal response function (sTRF) to speech. Listeners made more mistakes when answering questions about vocoded (versus intact) attended speech. At the neural level, we asked how unilateral acoustic degradation would impact the attention-induced amplification of tracking target versus distracting speech. Interestingly, unilateral degradation did not per se reduce the attention-induced amplification but instead delayed it in time: Speech encoding accuracy, modelled on the basis of the sTRF, was significantly enhanced for attended versus ignored intact speech at earlier neural response latencies ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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