Consciousness in a multilevel architecture: Evidence from the right side of the brain.

Autor: Velichkovsky BM; National Research Center 'Kurchatov Institute', Moscow, Russia; M.V. Lomonosov Moscow State University, Moscow, Russia; Russian State University for the Humanities, Moscow, Russia; Moscow Institute for Physics and Technology, Moscow, Russia; Technische Universitaet Dresden, Germany. Electronic address: boris.velichkovsky@tu-dresden.de., Krotkova OA; N.N. Burdenko Institute of Neurosurgery, Moscow, Russia., Kotov AA; National Research Center 'Kurchatov Institute', Moscow, Russia; Russian State University for the Humanities, Moscow, Russia., Orlov VA; National Research Center 'Kurchatov Institute', Moscow, Russia., Verkhlyutov VM; Institute of the Higher Nervous Activity and Neurophysiology of the RAS, Moscow, Russia., Ushakov VL; National Research Center 'Kurchatov Institute', Moscow, Russia; National Nuclear Research University 'MEPhI', Moscow, Russia., Sharaev MG; Skolkovo Institute of Science and Technology, Skolkovo, Moscow Region, Russia.
Jazyk: angličtina
Zdroj: Consciousness and cognition [Conscious Cogn] 2018 Sep; Vol. 64, pp. 227-239. Date of Electronic Publication: 2018 Jun 11.
DOI: 10.1016/j.concog.2018.06.004
Abstrakt: By taking into account Bruce Bridgeman's interest in an evolutionary framing of human cognition, we examine effective (cause-and-effect) connectivity among cortical structures related to different parts of the triune phylogenetic stratification: archicortex, paleocortex and neocortex. Using resting-state functional magnetic resonance imaging data from 25 healthy subjects and spectral Dynamic Causal Modeling, we report interactions among 10 symmetrical left and right brain areas. Our results testify to general rightward and top-down biases in excitatory interactions of these structures during resting state, when self-related contemplation prevails over more objectified conceptual thinking. The right hippocampus is the only structure that shows bottom-up excitatory influences extending to the frontopolar cortex. The right ventrolateral cortex also plays a prominent role as it interacts with the majority of nodes within and between evolutionary distinct brain subdivisions. These results suggest the existence of several levels of cognitive-affective organization in the human brain and their profound lateralization.
(Copyright © 2018 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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