Nonextensivity and self-affinity in the mammalian neuromuscular junction.
Phys Rev E Stat Nonlin Soft Matter Phys
; 84(4 Pt 1): 041925, 2011 Oct.
Article
em En
| MEDLINE
| ID: mdl-22181193
ABSTRACT
We study time series and the spontaneous miniature end-plate potentials (MEPPs) of mammals recorded at neuromuscular junctions using two different approaches generalized thermostatistics and detrended fluctuation analysis (DFA). Classical concepts establish that the magnitude of these potentials is characterized by Gaussian statistics and that their intervals are randomly displayed. First we show that MEPP distributions adequately satisfy the q-Gaussian distributions that maximize the Tsallis entropy, indicating their nonextensive and nonequilibrium behavior. We then examine the intervals between the miniature potentials via DFA, where the profile of the intervals between events configures a deviation from the expected random behavior. Some possible physiological substrates for these findings are discussed.
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Base de dados:
MEDLINE
Assunto principal:
Transmissão Sináptica
/
Potenciais Pós-Sinápticos em Miniatura
/
Modelos Neurológicos
/
Junção Neuromuscular
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article