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- Title
Plumes of neuronal activity propagate in three dimensions through the nuclear avian brain.
- Authors
Beckers, Gabriël J. L.; van der Meij, Jacqueline; Lesku, John A.; Rattenborg, Niels C.
- Abstract
Background In mammals, the slow-oscillations of neuronal membrane potentials (reflected in the electroencephalogram as high-amplitude, slow-waves), which occur during non-rapid eye movement sleep and anesthesia, propagate across the neocortex largely as two-dimensional traveling waves. However, it remains unknown if the traveling nature of slow-waves is unique to the laminar cytoarchitecture and associated computational properties of the neocortex. Results We demonstrate that local field potential slow-waves and correlated multi-unit activity propagate as complex three-dimensional plumes of neuronal activity through the avian brain, owing to its non-laminar, nuclear neuronal cytoarchitecture. Conclusions The traveling nature of slow-waves is not dependent upon the laminar organization of the neocortex, and is unlikely to subserve functions unique to this pattern of neuronal organization. Finally, the three-dimensional geometry of propagating plumes may reflect computational properties not found in mammals that contributed to the evolution of nuclear neuronal organization and complex cognition in birds.
- Subjects
BRAIN; AVIAN anatomy; ELECTROENCEPHALOGRAPHY; EYE movements; ANESTHESIA; CYTOARCHITECTONICS
- Publication
BMC Biology, 2014, Vol 12, Issue 1, p1
- ISSN
1741-7007
- Publication type
Article
- DOI
10.1186/1741-7007-12-16