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The brainstem reticular formation is a small-world, not scale-free, network
Open accessAbstract
Recently, it has been demonstrated that several complex systems may have simple graph-theoretic characterizations as so-called ‘small-world’ and ‘scale-free’ networks. These networks have also been applied to the gross neural connectivity between primate cortical areas and the nervous system of Caenorhabditis elegans. Here, we extend this work to a specific neural circuit of the vertebrate brain—the medial reticular formation (RF) of the brainstem—and, in doing so, we have made three key contributions. First, this work constitutes the first model (and quantitative review) of this important brain structure for over three decades. Second, we have developed the first graph-theoretic analysis of vertebrate brain connectivity at the neural network level. Third, we propose simple metrics to quantitatively assess the extent to which the networks studied are small-world or scale-free. We conclude that the medial RF is configured to create small-world (implying coherent rapid-processing capabilities), but not scale-free, type networks under assumptions which are amenable to quantitative measurement.
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“Several studies have modeled the internal organization of the reticular formation and its selection of appropriate RSNs for a motor behavior (58, 59).”
Background
Metadata
- Authors
- Humphries, M. D., Gurney, K., & Prescott, T. J.
- Venue
- Proceedings of the Royal Society B: Biological Sciences
- Publisher
- The Royal Society
- Published
- 2005-11-17
- Volume
- 273
- Issue
- 1585
- Pages
- 503-511
- ISSN
- 0080-4649 (ISSN-L)
- 0962-8452
- 1471-2954
- OpenAlex
- W2165096765
- Cited by
- 607
- References
- 4
- FWCI
- 7.63
- Type
- journal article
- Language
- en
- Open access
- green
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