Travelling waves or sequentially activated discrete modules: mapping the granularity of cortical propagation Article Swipe
YOU?
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· 2023
· Open Access
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· DOI: https://doi.org/10.7554/elife.92254.1
Numerous studies have identified travelling waves in the cortex and suggested they play important roles in brain processing. These waves are most often measured using macroscopic methods that are unable to assess the local spiking activity underlying wave dynamics. Here we investigated the possibility that waves may not be travelling at the single neuron scale. We first show that sequentially activating two discrete brain areas can appear as travelling waves in EEG simulations. We next reproduce these results using an analytical model of two sequentially activated regions. Using this model, we were able to generate wave-like activity with variable directions, velocities, and spatial patterns, and to map the discriminability limits between travelling waves and modular sequential activations. Finally, we investigated the link between field potentials and single neuron excitability using large-scale measurements from turtle cortex ex-vivo. We found that while field potentials exhibit wave-like dynamics, the underlying spiking activity was better described by consecutively activated spatially adjacent groups of neurons. Taken together, this study suggests caution when interpreting phase delay measurements as continuously propagating wavefronts in two different spatial scales. A careful distinction between modular and wave excitability profiles across scales will be critical for understanding the nature of cortical computations.
Related Topics
- Type
- preprint
- Language
- en
- Landing Page
- https://doi.org/10.7554/elife.92254.1
- https://github.com/elifesciences/enhanced-preprints-data/raw/master/data/92254/v1/92254-v1.pdf
- OA Status
- gold
- Cited By
- 3
- References
- 87
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4389172756
Raw OpenAlex JSON
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https://openalex.org/W4389172756Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.7554/elife.92254.1Digital Object Identifier
- Title
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Travelling waves or sequentially activated discrete modules: mapping the granularity of cortical propagationWork title
- Type
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preprintOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-11-30Full publication date if available
- Authors
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Yuval Orsher, Ariel Rom, Rotem Perel, Yoav Lahini, Pablo Blinder, Mark Shein‐IdelsonList of authors in order
- Landing page
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https://doi.org/10.7554/elife.92254.1Publisher landing page
- PDF URL
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https://github.com/elifesciences/enhanced-preprints-data/raw/master/data/92254/v1/92254-v1.pdfDirect link to full text PDF
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
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https://github.com/elifesciences/enhanced-preprints-data/raw/master/data/92254/v1/92254-v1.pdfDirect OA link when available
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Granularity, Wavefront, Physics, Traveling wave, Local field potential, Modular design, Scale (ratio), Computation, Neuroscience, Computer science, Biological system, Optics, Biology, Mathematics, Algorithm, Mathematical analysis, Quantum mechanics, Operating systemTop concepts (fields/topics) attached by OpenAlex
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3Total citation count in OpenAlex
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2025: 3Per-year citation counts (last 5 years)
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87Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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