6 documents found, page 1 of 1
Stochastic oscillations and dragon king avalanches in self-organized quasi-crit...
Copelli, Mauro
Criticality between Cortical States
Fontenele, Antonio J.; Vasconcelos, Nivaldo António Portela; Feliciano, Thaís; Aguiar, Leandro A. A.; Soares-Cunha, Carina; Coimbra, BárbaraSince 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 b...
Anticipated and zero-lag synchronization in motifs of delay-coupled systems
Copelli, Mauro
Characterization of the relationship between semantic and structural language f...
Mota, Natália; Ribeiro, Sidarta Tollendal Gomes; Copelli, Mauro; Carrillo, Fernando; Slezak, Diego FernadezPsychiatry describes speech symptoms that are indicative of disorganized thought, but measuring them is not easy. With natural language processing tools, it is possible to quantify psychiatric symptoms. Graph representations of word trajectories and semantic incoherence have independently been shown to predict the Schizophrenia diagnosis. Both analyses assess thought organization through speech, but the relatio...
Psychosis and the Control of Lucid Dreaming
Mota, Natália B.; Resende, Adara; Mota-Rolim, Sérgio A.; Copelli, Mauro; Ribeiro, Sidarta Tollendal GomesDreaming and psychosis share important features, such as intrinsic sense perceptions independent of external stimulation, and a general lack of criticism that is associated with reduced frontal cerebral activity. Awareness of dreaming while a dream is happening defines lucid dreaming (LD), a state in which the prefrontal cortex is more active than during regular dreaming. For this reason, LD has been proposed t...
Statistical physics approach to dendritic computation: the excitable-wave mean-...
Copelli, Mauro