Decoding the dynamic representation of musical pitch from human brain activity

Scientific Reports
N SankaranThomas A Carlson

Abstract

In music, the perception of pitch is governed largely by its tonal function given the preceding harmonic structure of the music. While behavioral research has advanced our understanding of the perceptual representation of musical pitch, relatively little is known about its representational structure in the brain. Using Magnetoencephalography (MEG), we recorded evoked neural responses to different tones presented within a tonal context. Multivariate Pattern Analysis (MVPA) was applied to "decode" the stimulus that listeners heard based on the underlying neural activity. We then characterized the structure of the brain's representation using decoding accuracy as a proxy for representational distance, and compared this structure to several well established perceptual and acoustic models. The observed neural representation was best accounted for by a model based on the Standard Tonal Hierarchy, whereby differences in the neural encoding of musical pitches correspond to their differences in perceived stability. By confirming that perceptual differences honor those in the underlying neuronal population coding, our results provide a crucial link in understanding the cognitive foundations of musical pitch across psychological and neura...Continue Reading

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Citations

Sep 28, 2019·Journal of Cognitive Neuroscience·Mattson OggL Robert Slevc
Mar 29, 2021·Neuroscience·Sarah A SauvéBenjamin Rich Zendel
Nov 4, 2020·Hearing Research·Steven LosorelliMatthew B Fitzgerald
May 27, 2021·Nature Communications·Thomas SchreinerBernhard P Staresina

Methods Mentioned

BETA
MDS
PCA
RSA

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