Intracerebral recordings reveal enhanced representation of musical beat across auditory and sensory-motor associative areas of the human brain
(2023) 3rd Conference of the Timing Research Forum — Location: Lisbon, Portugal (4.October.2023)
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- Abstract
- When listening to music, humans readily perceive and move along with a periodic beat. Here, we show that this ability is supported by an enhanced representation of the beat in auditory and higher-level associative areas of the human brain. We recorded local field potentials from patients implanted with intracerebral electrodes while listening to rhythms known to induce perception of a beat across healthy adults. The rhythms elicited responses in temporal, parietal and frontal cortices. Importantly, most responsive areas showed an enhanced beat representation, including in the primary auditory cortex, even when the beat was not acoustically prominent in the stimulus. Moreover, beat representation was particularly prominent in sensory-motor parietal associative areas. These findings indicate a general neural mechanism that (i) transforms sound representation to support beat perception, (ii) affects responses already in the auditory cortex, and (iii) may emerge from an interconnected network of sensory and higher-level associative brain regions.
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Lenc, T., Jonas, J., Rossion, B., Colnat-Coulbois, S., & Nozaradan, S. (2023). Intracerebral recordings reveal enhanced representation of musical beat across auditory and sensory-motor associative areas of the human brain. 3rd Conference of the Timing Research Forum, Lisbon, Portugal. https://hdl.handle.net/2078.5/26050