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Training to Improve Hearing Speech in Noise: Biological Mechanisms
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Musicians have fine-tuned neural distinction of speech syllables
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Training to Improve Hearing Speech in Noise: Biological Mechanisms
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Abstract:
We investigated training-related improvements in listening in noise and the biological mechanisms mediating these improvements. Training-related malleability was examined using a program that incorporates cognitively based listening exercises to improve speech-in-noise perception. Before and after training, auditory brainstem responses to a speech syllable were recorded in quiet and multitalker noise from adults who ranged in their speech-in-noise perceptual ability. Controls did not undergo training but were tested at intervals equivalent to the trained subjects. Trained subjects exhibited significant improvements in speech-in-noise perception that were retained 6 months later. Subcortical responses in noise demonstrated training-related enhancements in the encoding of pitch-related cues (the fundamental frequency and the second harmonic), particularly for the time-varying portion of the syllable that is most vulnerable to perceptual disruption (the formant transition region). Subjects with the largest strength of pitch encoding at pretest showed the greatest perceptual improvement. Controls exhibited neither neurophysiological nor perceptual changes. We provide the first demonstration that short-term training can improve the neural representation of cues important for speech-in-noise perception. These results implicate and delineate biological mechanisms contributing to learning success, and they provide a conceptual advance to our understanding of the kind of training experiences that can influence sensory processing in adulthood.
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Articles
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URL: http://www.ncbi.nlm.nih.gov/pubmed/21799207 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3450924 https://doi.org/10.1093/cercor/bhr196
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45 |
Subcortical encoding of sound is enhanced in bilinguals and relates to executive function advantages
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Assistive listening devices drive neuroplasticity in children with dyslexia
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Cross-phaseogram: Objective neural index of speech sound differentiation
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48 |
Training to Improve Hearing Speech in Noise: Biological Mechanisms
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Musical Experience and the Aging Auditory System: Implications for Cognitive Abilities and Hearing Speech in Noise
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Inferior colliculus contributions to phase encoding of stop consonants in an animal model
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Brainstem Correlates of Speech-in-Noise Perception in Children
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RAPID ACOUSTIC PROCESSING IN THE AUDITORY BRAINSTEM IS NOT RELATED TO CORTICAL ASYMMETRY FOR THE SYLLABLE RATE OF SPEECH
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Stimulus Rate and Subcortical Auditory Processing of Speech
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Auditory brainstem measures predict reading and speech-in-noise perception in school-aged children
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Musical Experience Limits the Degradative Effects of Background Noise on the Neural Processing of Sound
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Context-dependent encoding in the human auditory brainstem relates to hearing speech in noise: Implications for developmental dyslexia
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