Beyond pulsed inhibition: Alpha oscillations modulate attenuation and amplification of neural activity in the awake resting state

Lombardi, Fabrizio; Herrmann, Hans J.; Parrino, Liborio; Plenz, Dietmar; Scarpetta, Silvia; Vaudano, Anna Elisabetta; de Arcangelis, Lucilla; Shriki, Oren

doi:10.1016/j.celrep.2023.113162

Cited by 14 publications

(16 citation statements)

References 83 publications

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“…On the other hand, excitation is continuously enhanced over several alpha cycles, amplifying neural activity. This unique waxing and waning phenomenon of alpha rhythms is generated in accordance with Omori’s law, which is a power-law ( Lombardi et al, 2023 ).…”

Section: Alpha Rhythms In the Mammalian Neocortex And Avian Palliummentioning

confidence: 87%

“…The phenomenon of neural avalanches has been observed not only in the pallium of fish brains but also in the human neocortex. It has been revealed that the distinctive waxing and waning phenomenon of alpha rhythms is utilized by neural avalanches ( Lombardi et al, 2023 ). The decay of alpha rhythms suppresses neural activity by transmitting alpha-mediated inhibition in intermittent pulses within a single alpha cycle (approximately 100 msec).…”

Section: Alpha Rhythms In the Mammalian Neocortex And Avian Palliummentioning

confidence: 99%

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Evolutionary origin of alpha rhythms in vertebrates

Shibata,

Hattori,

Nishijo

et al. 2024

Front. Behav. Neurosci.

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The purpose of this review extends beyond the traditional triune brain model, aiming to elucidate the evolutionary aspects of alpha rhythms in vertebrates. The forebrain, comprising the telencephalon (pallium) and diencephalon (thalamus, hypothalamus), is a common feature in the brains of all vertebrates. In mammals, evolution has prioritized the development of the forebrain, especially the neocortex, over the midbrain (mesencephalon) optic tectum, which serves as the prototype for the visual brain. This evolution enables mammals to process visual information in the retina-thalamus (lateral geniculate nucleus)-occipital cortex pathway. The origin of posterior-dominant alpha rhythms observed in mammals in quiet and dark environments is not solely attributed to cholinergic pontine nuclei cells functioning as a 10 Hz pacemaker in the brainstem. It also involves the ability of the neocortex’s cortical layers to generate traveling waves of alpha rhythms with waxing and waning characteristics. The utilization of alpha rhythms might have facilitated the shift of attention from external visual inputs to internal cognitive processes as an adaptation to thrive in dark environments. The evolution of alpha rhythms might trace back to the dinosaur era, suggesting that enhanced cortical connectivity linked to alpha bands could have facilitated the development of nocturnal awakening in the ancestors of mammals. In fishes, reptiles, and birds, the pallium lacks a cortical layer. However, there is a lack of research clearly observing dominant alpha rhythms in the pallium or organized nuclear structures in fishes, reptiles, or birds. Through convergent evolution, the pallium of birds, which exhibits cortex-like fiber architecture, has not only acquired advanced cognitive and motor abilities but also the capability to generate low-frequency oscillations (4-25 Hz) resembling alpha rhythms. This suggests that the origins of alpha rhythms might lie in the pallium of a common ancestor of birds and mammals.

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Section: Alpha Rhythms In the Mammalian Neocortex And Avian Palliummentioning

confidence: 87%

Section: Alpha Rhythms In the Mammalian Neocortex And Avian Palliummentioning

confidence: 99%

Evolutionary origin of alpha rhythms in vertebrates

Shibata,

Hattori,

Nishijo

et al. 2024

Front. Behav. Neurosci.

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“…de Arcangelis is now Full Professor at the Vanvitelli University and continues to work on stochastic phenomena (also applied to earthquakes, etc.) and neuronal networks (still in collaboration with Herrmann and Plentz), as well as on a number of other topics including granular materials and COVID studies [96][97][98]. Since 2021 she is Chair of the C3 Commission of the IUPAP, while in 2022 she was elected APS Fellow and Member at large of the Division of Computational Physics Executive Committee of the American Physical Society.…”

Section: Summary and Concluding Remarksmentioning

confidence: 99%

Percolating lives: statistical mechanics in Naples

Esposito,

Amabile

2024

EPJ H

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We reconstruct the intriguing case of the formation of the Naples group of Statistical Mechanics, which took more than two decades, from the first steps at the end of 1960 aimed at acquiring skills and knowledge abroad, until the formal establishment of the group at the beginning of the 1990 s. A number of important results were obtained seamlessly during this period by Antonio Coniglio and his large number of collaborators, but although favorable opportunities for the formation of the group emerged, starting from the beginning of the 1980 s, several factors (including a certain disinterest in supporting research in Italy) effectively delayed the formation of a group by about a decade. We here provide a fairly comprehensive picture of the relevance of the group of Neapolitan statistical physicists even before its formation, also reviewing the main contributions achieved by these people both during the process of formation of the group and in the first decade of its life.

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“…The brain open to the world is "awake", connected to the world by a number of links, by the dialog with its Double, which is recognized as other than the self (for a study on the alpha-wave modulations in the awake resting-state see [65]). However, when the ties with the world are reduced in number, or weakened, e.g., during sleep, or as a result of drugs, in certain altered states of consciousness, then the ability is also weakened to distinguish the Double as other than self, and the perception of the ordered evolution of time may be lost, and with it the dissipative nature of brain dynamics, from which the orthogonality between representations (memory states) derives.…”

Section: Intentionality Mind and Consciousnessmentioning

confidence: 99%

Dynamical Asymmetries, the Bayes’ Theorem, Entanglement, and Intentionality in the Brain Functional Activity

Bernal-Casas,

Vitiello

2023

Symmetry

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We discuss the asymmetries of dynamical origin that are relevant to functional brain activity. The brain is permanently open to its environment, and its dissipative dynamics is characterized indeed by the asymmetries under time translation transformations and time-reversal transformations, which manifest themselves in the irreversible “arrow of time”. Another asymmetry of dynamical origin arises from the breakdown of the rotational symmetry of molecular electric dipoles, triggered by incoming stimuli, which manifests in long-range dipole-dipole correlations favoring neuronal correlations. In the dissipative model, neurons, glial cells, and other biological components are classical structures. The dipole vibrational fields are quantum variables. We review the quantum field theory model of the brain proposed by Ricciardi and Umezawa and its subsequent extension to dissipative dynamics. We then show that Bayes’ theorem in probability theory is intrinsic to the structure of the brain states and discuss its strict relation with entanglement phenomena and free energy minimization. The brain estimates the action with a higher Bayes probability to be taken to produce the aimed effect. Bayes’ rule provides the formal basis of the intentionality in brain activity, which we also discuss in relation to mind and consciousness.

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Beyond pulsed inhibition: Alpha oscillations modulate attenuation and amplification of neural activity in the awake resting state

Cited by 14 publications

References 83 publications

Evolutionary origin of alpha rhythms in vertebrates

Evolutionary origin of alpha rhythms in vertebrates

Percolating lives: statistical mechanics in Naples

Dynamical Asymmetries, the Bayes’ Theorem, Entanglement, and Intentionality in the Brain Functional Activity

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