High-frequency burst spiking in layer 5 thick-tufted pyramids of rat primary somatosensory cortex encodes exploratory touch

Autor: Huibert D. Mansvelder, Christiaan P. J. de Kock, Rebecca A. Mease, Jean L Pie, Marcel Oberlaender, Anton W. Pieneman, Bert Sakmann, JM Guest, Arco Bast
Přispěvatelé: Integrative Neurophysiology, Amsterdam Neuroscience - Compulsivity, Impulsivity & Attention, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience - Cellular & Molecular Mechanisms
Rok vydání: 2021
Předmět:
Zdroj: Communications biology, 4(1):709. Nature Research
Communications Biology
de Kock, C P J, Pie, J, Pieneman, A W, Mease, R A, Bast, A, Guest, J M, Oberlaender, M, Mansvelder, H D & Sakmann, B 2021, ' High-frequency burst spiking in layer 5 thick-tufted pyramids of rat primary somatosensory cortex encodes exploratory touch ', Communications biology, vol. 4, no. 1, 709 . https://doi.org/10.1038/s42003-021-02241-8
Communications Biology, Vol 4, Iss 1, Pp 1-14 (2021)
ISSN: 2399-3642
Popis: Diversity of cell-types that collectively shape the cortical microcircuit ensures the necessary computational richness to orchestrate a wide variety of behaviors. The information content embedded in spiking activity of identified cell-types remain unclear to a large extent. Here, we recorded spike responses upon whisker touch of anatomically identified excitatory cell-types in primary somatosensory cortex in naive, untrained rats. We find major differences across layers and cell-types. The temporal structure of spontaneous spiking contains high-frequency bursts (≥100 Hz) in all morphological cell-types but a significant increase upon whisker touch is restricted to layer L5 thick-tufted pyramids (L5tts) and thus provides a distinct neurophysiological signature. We find that whisker touch can also be decoded from L5tt bursting, but not from other cell-types. We observed high-frequency bursts in L5tts projecting to different subcortical regions, including thalamus, midbrain and brainstem. We conclude that bursts in L5tts allow accurate coding and decoding of exploratory whisker touch.
In order to investigate the information encoded by spiking activity in different neuronal cell types in the primary somatosensory cortex, de Kock et al performed electrophysiological recordings in untrained rats. They demonstrated that an increase in high-frequency burst spiking in thick tufted pyramids in layer 5 of the cortex allow accurate encoding of exploratory whisker touch.
Databáze: OpenAIRE
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