Stochastic processes in the brain's neural network and their impact on perception and decision-making

A.N. Pisarchik^†^a, A.E. Hramov^‡^b, c
^aCenter for Biomedical Technology Technical University of Madrid, Campus Montegancedo, Pozuelo de Alarcón, Madrid, 28223, Spain
^bBaltic Center for Neurotechnology and Artificial Intelligence, Immanuel Kant Baltic Federal University, Aleksandr Nevskii str. 14, Kaliningrad, 236041, Russian Federation
^cSaratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachya str. 112, Saratov, 410012, Russian Federation

The article deals with the influence of stochastic dynamics of the brain's neural ensembles on the perception and processing of sensory information, as well as on decision-making based on it. The review considers sources of noise in the nervous system during sensory information processing, as well as some nervous system strategies of compensating for or taking into account stochastic processes. Experiments and mathemat„ical models are discussed in which stochastic brain dynamics begins to play a significant role in the perception of sensory information. Particular attention is paid to brain noise research paradigms such as the perception of weak stimuli close to the sensitivity threshold and bistable ambiguous stimuli. Methods for assessing brain noise using both psychophysical experiments and direct analysis of neuroimaging data are described. Finally, some issues in applying the concept of stochastic brain dynamics to problems in the biomedical diagnosis of various neurological diseases are considered.

Keywords: neural networks, brain, stochastic process, perception, mathematical models, psychophysics, stochastic/coherence resonance, electroencephalogram and magnetoencephalogram analysis
PACS: 05.45.−a, 87.19.L−, 87.85.−d (all)
DOI: 10.3367/UFNe.2022.12.039309
URL: https://ufn.ru/en/articles/2023/12/c/
Web of Science

001172931200004
Scopus

2-s2.0-85177602649
ADS NASA

2023PhyU...66.1224P
Citation: Pisarchik A N, Hramov A E "Stochastic processes in the brain's neural network and their impact on perception and decision-making" Phys. Usp. 66 1224–1247 (2023)

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Received: 8th, December 2022, accepted: 27th, December 2022

Оригинал: Писарчик А Н, Храмов А Е «Стохастические процессы в нейронной сети головного мозга и их влияние на восприятие и принятие решений» УФН 193 1298–1324 (2023); DOI: 10.3367/UFNr.2022.12.039309

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