The spreading depression propagation
| dc.contributor.author | LIMA, VERA M.F. de | pt_BR |
| dc.contributor.author | PEREIRA JUNIOR, ALFREDO | pt_BR |
| dc.contributor.author | OLIVEIRA, GUILHERME L. de | pt_BR |
| dc.coverage | Internacional | pt_BR |
| dc.date.accessioned | 2021-03-23T17:41:26Z | |
| dc.date.available | 2021-03-23T17:41:26Z | |
| dc.date.issued | 2021 | pt_BR |
| dc.description.abstract | At the transition from quiescence to propagating waves recorded in isolated retinas, a circular electric current closes in the extracellular matrix; this circular current creates a magnetic torus flow that, when entering quiescent tissue in front of the wave, recruits elements and when leaving behind, helps to build the absolute refractory state. The waving magnetic torus is the consequence of the vortex effect and explains the energy boost that drives propagation. Methods: We interpret experimental results from intrinsic and extrinsic fluorescence dyes, voltage, calcium and pH sensitive, optical signals from isolated retinas, and time series recordings using ion exchange resins: Ca, K, pH, Na, Cl recorded extracellularly at retinas, cerebellums and cortices coupled to spreading depression waves. Finally, we checked the ECoG activity, also a time series, at the transition from after discharges to spreading depression in rat hippocampus. Results: The integrated assessment of the diversified measurements led to the realization that the magnetic flow at the wavefront is a major contributor to the wave propagation mechanisms. This flow couples mass and charge flows as a swirling torus from excited to quiescent tissue. Conclusions: An alternative model of the brain is possible, apart from the classical HH and molecular biology model. Physical chemistry of charged gels and its flows explains the results. The conceptual framework uses far from equilibrium thermodynamics. | pt_BR |
| dc.format.extent | 133-146 | pt_BR |
| dc.identifier.citation | LIMA, VERA M.F. de; PEREIRA JUNIOR, ALFREDO; OLIVEIRA, GUILHERME L. de. The spreading depression propagation: how electrochemical patterns distort or create perception. <b>Open Journal of Biophysics</b>, v. 11, n. 2, p. 133-146, 2021. DOI: <a href="https://dx.doi.org/10.4236/ojbiphy.2021.112003">10.4236/ojbiphy.2021.112003</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/31942. | |
| dc.identifier.doi | 10.4236/ojbiphy.2021.112003 | pt_BR |
| dc.identifier.fasciculo | 2 | pt_BR |
| dc.identifier.issn | 2164-5388 | pt_BR |
| dc.identifier.percentilfi | Sem Percentil | pt_BR |
| dc.identifier.percentilfiCiteScore | Sem Percentil CiteScore | |
| dc.identifier.uri | http://repositorio.ipen.br/handle/123456789/31942 | |
| dc.identifier.vol | 11 | pt_BR |
| dc.relation.ispartof | Open Journal of Biophysics | pt_BR |
| dc.rights | openAccess | pt_BR |
| dc.subject | brain | |
| dc.subject | electrochemistry | |
| dc.subject | retina | |
| dc.subject | resonance | |
| dc.subject | central nervous system | |
| dc.subject | vortices | |
| dc.subject | vortex flow | |
| dc.title | The spreading depression propagation | pt_BR |
| dc.type | Artigo de periódico | pt_BR |
| dspace.entity.type | Publication | |
| ipen.autor | VERA MAURA FERNANDES DE LIMA | |
| ipen.codigoautor | 3635 | |
| ipen.contributor.ipenauthor | VERA MAURA FERNANDES DE LIMA | |
| ipen.date.recebimento | 21-03 | |
| ipen.identifier.fi | Sem F.I. | pt_BR |
| ipen.identifier.fiCiteScore | Sem CiteScore | |
| ipen.identifier.ipendoc | 27713 | pt_BR |
| ipen.subtitulo | how electrochemical patterns distort or create perception | pt_BR |
| ipen.type.genre | Artigo | |
| relation.isAuthorOfPublication | 99e1371d-9c17-42f8-8106-fc7721914d56 | |
| relation.isAuthorOfPublication.latestForDiscovery | 99e1371d-9c17-42f8-8106-fc7721914d56 | |
| sigepi.autor.atividade | LIMA, VERA M.F. de:3635:-1:S | pt_BR |