Auditory Discrimination Learning: Role of Working Memory

PloS One
Yu-Xuan ZhangSygal Amitay

Abstract

Perceptual training is generally assumed to improve perception by modifying the encoding or decoding of sensory information. However, this assumption is incompatible with recent demonstrations that transfer of learning can be enhanced by across-trial variation of training stimuli or task. Here we present three lines of evidence from healthy adults in support of the idea that the enhanced transfer of auditory discrimination learning is mediated by working memory (WM). First, the ability to discriminate small differences in tone frequency or duration was correlated with WM measured with a tone n-back task. Second, training frequency discrimination around a variable frequency transferred to and from WM learning, but training around a fixed frequency did not. The transfer of learning in both directions was correlated with a reduction of the influence of stimulus variation in the discrimination task, linking WM and its improvement to across-trial stimulus interaction in auditory discrimination. Third, while WM training transferred broadly to other WM and auditory discrimination tasks, variable-frequency training on duration discrimination did not improve WM, indicating that stimulus variation challenges and trains WM only if the tas...Continue Reading

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Citations

Mar 21, 2017·Neuropsychologia·Kelly L Whiteford, Andrew J Oxenham
Oct 17, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Yael ZaltzLiat Kishon-Rabin
Jul 14, 2017·Frontiers in Psychology·Yu-Xuan ZhangSygal Amitay
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Dec 8, 2020·Frontiers in Human Neuroscience·Srikanta K Mishra, Udit Saxena
Oct 24, 2017·Current Biology : CB·Jonathon P WhittonDaniel B Polley

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