Neural Signatures of the Processing of Temporal Patterns in Sound.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Björn Herrmann, Ingrid S Johnsrude

Abstract

The ability to detect regularities in sound (i.e., recurring structure) is critical for effective perception, enabling, for example, change detection and prediction. Two seemingly unconnected lines of research concern the neural operations involved in processing regularities: one investigates how neural activity synchronizes with temporal regularities (e.g., frequency modulation; FM) in sounds, whereas the other focuses on increases in sustained activity during stimulation with repeating tone-frequency patterns. In three electroencephalography studies with male and female human participants, we investigated whether neural synchronization and sustained neural activity are dissociable, or whether they are functionally interdependent. Experiment I demonstrated that neural activity synchronizes with temporal regularity (FM) in sounds, and that sustained activity increases concomitantly. In Experiment II, phase coherence of FM in sounds was parametrically varied. Although neural synchronization was more sensitive to changes in FM coherence, such changes led to a systematic modulation of both neural synchronization and sustained activity, with magnitude increasing as coherence increased. In Experiment III, participants either perform...Continue Reading

Citations

Jan 9, 2019·Frontiers in Human Neuroscience·Aysha Motala, Lucila Guadalupe Caceres
Jun 14, 2020·Scientific Reports·Björn HerrmannIngrid S Johnsrude
Feb 21, 2021·Current Biology : CB·Meenakshi M AsokanDaniel B Polley
Sep 23, 2021·The European Journal of Neuroscience·Pradeep DheerendraTimothy D Griffiths

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