M
Mauro Copelli
Researcher at Federal University of Pernambuco
Publications - 115
Citations - 3898
Mauro Copelli is an academic researcher from Federal University of Pernambuco. The author has contributed to research in topics: Phase transition & Critical point (thermodynamics). The author has an hindex of 28, co-authored 114 publications receiving 3108 citations. Previous affiliations of Mauro Copelli include University of São Paulo & Federal Fluminense University.
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Journal ArticleDOI
Optimal Dynamical Range of Excitable Networks at Criticality
Osame Kinouchi,Mauro Copelli +1 more
TL;DR: It is proposed that the main functional role of electrical coupling is to provide an enhancement of dynamic range, therefore allowing the coding of information spanning several orders of magnitude, which could provide a microscopic neural basis for psychophysical laws.
Journal ArticleDOI
Automated analysis of free speech predicts psychosis onset in high-risk youths
Gillinder Bedi,Facundo Carrillo,Guillermo A. Cecchi,Diego Fernández Slezak,Mariano Sigman,Natália Bezerra Mota,Sidarta Ribeiro,Daniel C. Javitt,Mauro Copelli,Cheryl Corcoran +9 more
TL;DR: Findings support the utility of automated speech analysis to measure subtle, clinically relevant mental state changes in emergent psychosis, as well as outperforming classification from clinical interviews.
Journal ArticleDOI
Spike avalanches exhibit universal dynamics across the sleep-wake cycle.
Tiago L. Ribeiro,Mauro Copelli,Mauro Copelli,Fabio Viegas Caixeta,Fabio Viegas Caixeta,Hindiael Belchior,Hindiael Belchior,Dante R. Chialvo,Miguel A. L. Nicolelis,Sidarta Ribeiro,Sidarta Ribeiro +10 more
TL;DR: The chronic implanted multielectrode arrays used to record avalanches of action potentials from the cerebral cortex and hippocampus of 14 rats, as they spontaneously traversed the wake-sleep cycle, explored novel objects or were subjected to anesthesia, reveal a unique scale-invariant regime of spike avalanches across all major behaviors.
Journal ArticleDOI
Speech Graphs Provide a Quantitative Measure of Thought Disorder in Psychosis
Natália Bezerra Mota,Natália Bezerra Mota,Nivaldo A. P. de Vasconcelos,Nivaldo A. P. de Vasconcelos,Nathalia Lemos,Ana C. Pieretti,Osame Kinouchi,Guillermo A. Cecchi,Mauro Copelli,Sidarta Ribeiro +9 more
TL;DR: The results demonstrate that alterations of the thought process manifested in the speech of psychotic patients can be objectively measured using graph-theoretical tools, developed to capture specific features of the normal and dysfunctional flow of thought, such as divergence and recurrence.
Journal ArticleDOI
Criticality between Cortical States.
Antonio J. Fontenele,Nivaldo A. P. de Vasconcelos,Thaís Feliciano,Leandro A. A. Aguiar,Leandro A. A. Aguiar,Carina Soares-Cunha,Bárbara Coimbra,Leonardo Dalla Porta,Sidarta Ribeiro,Ana João Rodrigues,Nuno Sousa,Pedro V. Carelli,Mauro Copelli +12 more
TL;DR: Independent signatures of criticality are tested and it is shown that a phase transition occurs in an intermediate value of spiking variability, in both anesthetized and freely moving animals.