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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Criticality between Cortical States

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Autor(es):
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Fontenele, Antonio J. [1] ; de Vasconcelos, Nivaldo A. P. [1, 2, 3, 4] ; Feliciano, Thais [1] ; Aguiar, Leandro A. A. [1, 5] ; Soares-Cunha, Carina [3, 4] ; Coimbra, Barbara [3, 4] ; Dalla Porta, Leonardo [1, 6] ; Ribeiro, Sidarta [7] ; Rodrigues, Ana Joao [3, 4] ; Sousa, Nuno [3, 4] ; Carelli, V, Pedro ; Copelli, Mauro [8]
Número total de Autores: 12
Afiliação do(s) autor(es):
[1] Fed Univ Pernambuco UFPE, Phys Dept, BR-50670901 Recife, PE - Brazil
[2] Univ Fed Pernambuco, Dept Biomed Engn, BR-50670901 Recife, PE - Brazil
[3] Univ Minho, Sch Med, Life & Hlth Sci Res Inst ICVS, P-4710057 Braga - Portugal
[4] ICVS 3Bs PT Govt Associate Lab, P-4806909 Braga - Portugal
[5] Univ Fed Rural Pernambuco UFRPE, Dept Morfol & Fisiol Anim, BR-52171900 Recife, PE - Brazil
[6] Inst Invest Biomed August Pi i Sunyer IDIBAPS, Syst Neurosci, Barcelona 08036 - Spain
[7] Fed Univ Rio Grande do Norte UFRN, Brain Inst, BR-59056450 Natal, RN - Brazil
[8] Carelli, Pedro, V, Fed Univ Pernambuco UFPE, Phys Dept, BR-50670901 Recife, PE - Brazil
Número total de Afiliações: 8
Tipo de documento: Artigo Científico
Fonte: Physical Review Letters; v. 122, n. 20 MAY 21 2019.
Citações Web of Science: 11
Resumo

Since the first measurements of neuronal avalanches, the critical brain hypothesis has gained traction. However, if the brain is critical, what is the phase transition? For several decades, it has been known that the cerebral cortex operates in a diversity of regimes, ranging from highly synchronous states (with higher spiking variability) to desynchronized states (with lower spiking variability). Here, using both new and publicly available data, we test independent signatures of criticality and show that a phase transition occurs in an intermediate value of spiking variability, in both anesthetized and freely moving animals. The critical exponents point to a universality class different from mean-field directed percolation. Importantly, as the cortex hovers around this critical point, the avalanche exponents follow a linear relation that encompasses previous experimental results from different setups and is reproduced by a model. (AU)

Processo FAPESP: 13/07699-0 - Centro de Pesquisa, Inovação e Difusão em Neuromatemática - NeuroMat
Beneficiário:Jefferson Antonio Galves
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs