The role of right supplementary motor area and posterior parietal cortex in beat-based temporal prediction: evidence from a TMS-EEG study   

The role of right supplementary motor area and posterior parietal cortex in beat-based temporal prediction: evidence from a TMS-EEG study | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 10 November 2025 V1 Latest version Share on The role of right supplementary motor area and posterior parietal cortex in beat-based temporal prediction: evidence from a TMS-EEG study Authors : Ziyi Cheng and Ramesh Balasubramaniam 0000-0001-7575-3080 [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.176281746.60442415/v1 93 views 79 downloads Contents Abstract Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Beat perception is a core component of temporal cognition that enables humans to extract a regular pulse from rhythmic auditory input and anticipate the timing of future events. While this process believed to be an auditory perceptual phenomenon, recent neuroimaging studies suggest the involvement of sensorimotor networks, even in the absence of overt movement. The current study investigated the role of the right SMA and right PPC in beat perception using transcranial magnetic stimulation (TMS) and electroencephalography (EEG). While the PPC is proposed to play a role in aligning internal motor-based predictions with external rhythmic input, the SMA was not explicitly included in the model but was commonly found activated in beat perception studies . We applied continuous theta burst stimulation to the right PPC and right SMA in separate sessions, along with a sham condition, to test their respective roles in a beat alignment task. Participants completed two subtests of the Adaptive Beat Alignment Test (A-BAT): one probing tempo-based timing sensitivity (inter-beat interval, IBI) and the other assessing phase-based timing alignment. EEG data were collected before and after TMS while participants passively listened to musical stimuli and made predictions of upcoming beat patterns. We analyzed event-related spectral perturbations (ERSP) in alpha and beta bands over right motor-parietal electrodes (FC2, CP2), time-locked to every beat onset. Behavioral results revealed no significant changes in performance following either right SMA or PPC stimulation, though phase detection thresholds increased numerically after PPC stimulation. ERSP analyses revealed significant modulation of oscillatory dynamics following PPC stimulation. Specifically, alpha power increased significantly after PPC stimulation (F(1,3) = 9.214, p = .039), and beta power decreased (F(1,3) = 10.635, p = .032), indicating a disruption in the sensorimotor prediction network. No significant changes in alpha or beta power were observed in the SMA or sham conditions. These early results support the idea that the right PPC may play a critical role in sensorimotor alignment and predictive timing, consistent with its proposed function within the dorsal stream. The absence of significant SMA effects may reflect its context-dependent role, potentially engaged more strongly in conditions requiring endogenous beat maintenance or increased prediction demands. This ongoing study contributes to ongoing efforts to refine our understanding of the neural mechanisms underlying temporal prediction. THIS IN AN ABSTRACT PRESENTED AT THE SOCIETY FOR NEUROSCIENCE ANNUAL MEETING in San Diego, CA. Nov 2025. Information & Authors Information Version history V1 Version 1 10 November 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords cognitive neuroscience cognitive neuroscience -- eeg -- event related potentials -- brain rhytms neuroscience and perception sensorimotor rhythms Authors Affiliations Ziyi Cheng View all articles by this author Ramesh Balasubramaniam 0000-0001-7575-3080 [email protected] View all articles by this author Metrics & Citations Metrics Article Usage 93 views 79 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Ziyi Cheng, Ramesh Balasubramaniam. The role of right supplementary motor area and posterior parietal cortex in beat-based temporal prediction: evidence from a TMS-EEG study . Authorea . 10 November 2025. DOI: https://doi.org/10.22541/au.176281746.60442415/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. 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