The Rediscovered Motor-Related Area 55b Emerges as a Core Hub of Music Perception | Siman-Tov et al.
Appreciation
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Importance
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Date Added
8.28.26
TLDR
Right 55b is the most activated cortical region outside auditory cortex during passive music listening, and its activity predicts how accurately and consistently someone can tap to a beat.
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Tags
- Across 163 NeuroSynth studies tagged “music,” the largest activation cluster outside auditory cortex overlapped right 55b.
- In the authors’ fMRI study, roughly 65 non-musicians passively listened in rhythm, melody, and harmony paradigms. Of 360 HCP parcels, right 55b ranked 24th, 32nd, and 29th; every parcel above it was auditory.
- Fifty-nine participants completed a beat-tapping task days apart. Right 55b activity predicted tapping accuracy and consistency, controlling for age, gender, and musical education (–).
- Among the 36 parcels most activated by rhythm, right 55b was the best predictor of tapping performance and the only predictor of tapping accuracy.
- Auditory cortex activated more strongly but did not predict who tapped well.