A three-alternative, forced-choice adaptive procedure, with suitable reinforcement, is appropriate for testing auditory sensitivity in young children. Data obtained using this rigidly specified test protocol support previous findings of reduced auditory sensitivity in young children.
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Neural correlates of perceptual plasticity in the auditory midbrain and thalamus.
J Neurosci
January 2025
Neuroscience and Cognitive Science Program, University of Maryland, College Park, Maryland, 20742.
Hearing is an active process in which listeners must detect and identify sounds, segregate and discriminate stimulus features, and extract their behavioral relevance. Adaptive changes in sound detection can emerge rapidly, during sudden shifts in acoustic or environmental context, or more slowly as a result of practice. Although we know that context- and learning-dependent changes in the sensitivity of auditory cortical (ACX) neurons support many aspects of perceptual plasticity, the contribution of subcortical auditory regions to this process is less understood.
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Proc Natl Acad Sci U S A
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Department of Communication Science and Disorders, University of Pittsburgh, Pittsburgh, PA 15213.
The auditory system is unique among sensory systems in its ability to phase lock to and precisely follow very fast cycle-by-cycle fluctuations in the phase of sound-driven cochlear vibrations. Yet, the perceptual role of this temporal fine structure (TFS) code is debated. This fundamental gap is attributable to our inability to experimentally manipulate TFS cues without altering other perceptually relevant cues.
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German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany.
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