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| 001 | 916032 | ||
| 005 | 20230217124543.0 | ||
| 024 | 7 | _ | |a 10.1523/JNEUROSCI.0658-22.2022 |2 doi |
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| 100 | 1 | _ | |a Niedernhuber, Maria |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Sensory target detection at local and global timescales reveals a hierarchy of supramodal dynamics in the human cortex |
| 260 | _ | _ | |a Washington, DC |c 2022 |b Soc. |
| 264 | _ | 1 | |3 online |2 Crossref |b Society for Neuroscience |c 2022-10-12 |
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| 520 | _ | _ | |a To ensure survival in a dynamic environment, the human neocortex monitors input streams from different sensory organs for important sensory events. Which principles govern whether different senses share common or modality-specific brain networks for sensory target detection? We examined whether complex targets evoke sustained supramodal activity while simple targets rely on modality-specific networks with short-lived supramodal contributions. In a series of hierarchical multisensory target detection studies (n = 77, of either sex) using EEG, we applied a temporal cross-decoding approach to dissociate supramodal and modality-specific cortical dynamics elicited by rule-based global and feature-based local sensory deviations within and between the visual, somatosensory, and auditory modality. Our data show that each sense implements a cortical hierarchy orchestrating supramodal target detection responses, which operate at local and global timescales in successive processing stages. Across different sensory modalities, simple feature-based sensory deviations presented in temporal vicinity to a monotonous input stream triggered a mismatch negativity-like local signal which decayed quickly and early, whereas complex rule-based targets tracked across time evoked a P3b-like global neural response which generalized across a late time window. Converging results from temporal cross-modality decoding analyses across different datasets, we reveal that global neural responses are sustained in a supramodal higher-order network, whereas local neural responses canonically thought to rely on modality-specific regions evolve into short-lived supramodal activity. Together, our findings demonstrate that cortical organization largely follows a gradient in which short-lived modality-specific as well as supramodal processes dominate local responses, whereas higher-order processes encode temporally extended abstract supramodal information fed forward from modality-specific cortices. |
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| 700 | 1 | _ | |a Raimondo, Federico |0 P:(DE-Juel1)185083 |b 1 |
| 700 | 1 | _ | |a Sitt, Jacobo D. |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Bekinschtein, Tristan A. |0 P:(DE-HGF)0 |b 3 |
| 773 | 1 | 8 | |a 10.1523/jneurosci.0658-22.2022 |b Society for Neuroscience |d 2022-10-12 |p JN-RM-0658-22 |3 journal-article |2 Crossref |t The Journal of Neuroscience |y 2022 |x 0270-6474 |
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| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/916032/files/8729.full.pdf |y Published on 2022-11-16. Available in OpenAccess from 2023-05-16. |
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