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Modulation of intrinsic brain connectivity by implicit electroencephalographic neurofeedback
Frontiers in Human Neuroscience. 2020. Vol. 14. No. 192. P. 1–13.
Despite the increasing popularity of neurofeedback, its mechanisms of action are still poorly understood. This study aims to describe the processes underlying implicit electroencephalographic neurofeedback. Fifty-two healthy volunteers were randomly assigned to a single session of infra-low frequency neurofeedback or sham neurofeedback, with electrodes over the right middle temporal gyrus and the right inferior parietal lobule. They observed a moving rocket, the speed of which was modulated by the waveform derived from a band-limited infra-low frequency filter. Immediately before and after the session, the participants underwent a resting-state fMRI. Network-based statistical analysis was applied, comparing post- vs. pre-session and real vs. sham neurofeedback conditions. As a result, two phenomena were observed. First, we described a brain circuit related to the implicit neurofeedback process itself, consisting of the lateral occipital cortex, right dorsolateral prefrontal cortex, left orbitofrontal cortex, right ventral striatum, and bilateral dorsal striatum. Second, we found increased connectivity between key regions of the salience, language, and visual networks, which is indicative of integration in sensory processing. Thus, it appears that a single session of implicit infra-low frequency electroencephalographic neurofeedback leads to significant changes in intrinsic brain connectivity.
Proskurnina E., Liaukovich K., Bychkovskaya L. et al., Metabolites 2023 Vol. 13 No. 1 P. 73
Added: September 7, 2026
Zaikin A., Vlasenko D., Zakharov D. et al., Diagnostics 2026 Vol. 16 No. 17 Article 2746
Background/Objectives: Synolitic graphs (SGs) were developed for task-based fMRI, where
edge weights encode the discriminative power of pairwise regional features; whether similar
information can be recovered from resting-state data was untested. We benchmarked
SGs for autism spectrum disorder (ASD) classification using the multisite ABIDE-I dataset
(871 subjects: 403 subjects with ASD, 468 typical controls; 17 sites; CC200 atlas). Methods:
Using ...
Added: August 27, 2026
Elena A. Andresyuk, Natalya O. Porozova, Londaridze G. et al., Frontiers in Oncology 2026 Vol. 16 Article 1875861
Inhibition of the PD-1/PD-L1 axis has become a clinical standard across multiple malignancies, yet durable benefit remains restricted to selected settings, and many biologically rational combinations fail to maintain clinical benefit in late-phase evaluation. This structured, registry-derived narrative review, supported by expert-guided interpretation, was designed to identify the most clinically meaningful development directions among strategies ...
Added: July 31, 2026
Sun Z., Khvostikov A., Krylov A. et al., Machine Learning and Knowledge Extraction 2026 Vol. 8 No. 1 Article 8
Whole-slide histology images (WSIs) can exceed 100 k × 100 k pixels, making direct pixel-level segmentation infeasible and requiring patch-level classification as a practical alternative for downstream WSI segmentation. However, most approaches either treat patches independently, ignoring spatial and biological context, or rely on deep graph models prone to oversmoothing and loss of local tissue ...
Added: July 16, 2026
Turkina A., Vinogradova O., Lomaia E. et al., Annals of Hematology 2025 Vol. 104 P. 2707–2715
Vamotinib (PF-114) is a 3rd -generation, ATP-competitive oral tyrosine kinase inhibitor (TKI) active against wild-type and mutated BCR::ABL1 isoforms including BCR::ABL1T315I. We present final results of a phase-1 vamotinib dose-escalation study to identify maximum tolerated dose (MTD) and dose-limiting toxicity (DLT) followed by expansion cohorts. 51 subjects with chronic myeloid leukaemia (CML) failing ≥ 1 2nd generation TKI or with BCR::ABL1T315I were ...
Added: July 16, 2026
Aly Ismailov, Spallone A., Belogurov A. et al., Frontiers in Immunology 2025 Vol. 16 Article 1530305
Glioblastomas are the most prevalent primary brain tumors and are associated with a dramatically poor prognosis. Despite an intensive treatment approach, including maximal surgical tumor removal followed by radio- and chemotherapy, the median survival for glioblastoma patients has remained around 18 months for decades. Glioblastoma is distinguished by its highly complex mechanisms of immune evasion ...
Added: June 17, 2026
Lifshits A., Святохина Е. В., Одиссей: Человек в истории 2026 № 1 С. 156–173
This article introduces a new source for scholarly discussion on the history of Russian language, science, and culture in the late 17th century. Numerous Russian captions for engravings were discovered in a copy of the "Travnik" (Herbal) by the great Renaissance botanist and pharmacist Pietro Andrea Mattioli, published in Prague in German in 1563. In ...
Added: June 15, 2026
Boldyreva M., Mohammad R., Agareva M. et al., FRONTIERS IN ANIMAL SCIENCE 2026 Vol. 7 Article 1837838
Mammals from arid ecosystems face distinct physiological challenges: water scarcity and unpredictable food availability require the integration of energy storage, maintenance of water balance, and flexible switching between nutrients. Our previous study demonstrated lower fasting blood glucose levels in the desert rodent Acomys cahirinus (African spiny mouse), which also possesses a unique regenerative ability. The aim of ...
Added: June 3, 2026
Perevoznyuk G., Batov A., Pleskovskaya A. et al., Scientific Reports 2026 Vol. 16 Article 13098
Motor imagery (MI) allows individuals to mentally simulate movements without execution, engaging neural pathways that overlap with those used during real actions. However, how imagery perspective influences corticospinal excitability across different effectors remains unclear. Using neuronavigated transcranial magnetic stimulation (TMS), we compared kinesthetic (KMI), first-person visual (VMI-1PP), and third-person visual (VMI-3PP) imagery of elbow flexion-extension ...
Added: May 5, 2026
Назаренко А. Г., Федоров М. В., Moshkin A. et al., Вестник Росздравнадзора 2026 № 1 С. 14–29
Multimodal foundation models and medical multimodal large language models are establishing a new class of diagnostic clinical decision support systems capable of operating on heterogeneous data sources, including medical imaging (X-ray, CT, MRI, ultrasound, histopathology), physiological signals (ECG, EEG), clinical text (electronic health records, reports, discharge summaries), laboratory measurements, molecular profiling data, and related modalities. ...
Added: May 4, 2026
Kopoleva E., Sergey A. Tsymbal, Kuchur O. et al., Drug Delivery and Translational Research 2026 P. 1–16
Multidrug resistance (MDR) remains one of the principal challenges in cancer chemotherapy, necessitating new strategies to restore drug efficacy. In this study we developed and characterize a redox-responsive nanoplatform based on trithiocyanuric acid and polyethylene glycol (TTCA-PEG NPs) as a potential tool to overcome MDR and provide a biocompatible delivery system for conventional antitumor drugs. ...
Added: April 20, 2026
Makarova M., Fedosov N., Mikhailova I. et al., FRONTIERS IN SIGNAL PROCESSING 2026 Vol. 6 Article 1776807
Introduction:
While self-referential attention is thought to enhance interoceptive sensitivity, its effect on cardiac modulation of corticospinal excitability remains unexplored. This pilot study investigated how viewing one’s own face (self-face processing) modulates the cardiac-phase coupling of motor output and whether this heart-brain coupling depends on interoceptive accuracy (heartbeat perception).
Methods:
In 15 healthy adults, motor-evoked potentials (MEPs) were ...
Added: April 17, 2026
Pogodaeva S. S., Miletina O. O., Mammadova L. V. et al., Frontiers in Bioscience - Landmark 2026 Vol. 31 No. 4 Article 48544
Background: Neuroblastoma (NB), a transcriptionally driven pediatric malignancy, exhibits a remarkable clinical and biological heterogeneity. Two major subtypes, adrenergic and mesenchymal, are differentially governed by distinct subsets of transcription factors that constitute the core regulatory circuitry (CRC). The adrenergic subtype is often associated with MYCN amplification and is particularly aggressive and therapy-resistant, underscoring the need ...
Added: April 15, 2026
Chernov I., Protas A., Popova E. et al., Biochemistry. Biokhimiia 2025 Vol. 19 No. 3 P. 279–287
This article reports the synthesis, characterization, cytotoxic activity, DNA binding study and antioxidant activity of N-(2-(2-(2-azidoethoxy)ethoxy)ethyl)-4,6-di(aziridin-1-yl)-1,3,5-triazin-2-amine. The synthesized compound was found to possess cytotoxic effects against six various cancer cell lines including HeLa, HCT116, T96G, A549, MCF7, and PANC-1 and non-cancer ECV cell line. Additionally, the capacity for DNA binding was assessed. The addition of 1,3,5-triazine ...
Added: April 15, 2026
Chernov K., Savin A., Otvodnikova D. et al., Oncology Research 2026 Vol. - No. -
The formation of drug resistance poses the ultimate threat in modern oncology. Targeted therapy lacks versatility, while conventional therapy is famous for its side effects. However, for the new therapeutics to address the challenge of drug resistance, such compounds should combine properties of both modalities. In this review, we argue that metal-based therapeutics are paramount ...
Added: April 15, 2026
Kochetkova E., Мачинская Р. И., Журнал высшей нервной деятельности им. И.П. Павлова 2025 Т. 75 № 2 С. 170–188
The review provides an analysis of modern cognitive psychological theories of emotions and neural basis
of mechanisms standing behind retention of emotional information in working memory. The tendency seen
in modern neurocognitive theories is characterized by the rejection of localization for any psychological
functions in favor of network models, where higher-order processes are supported by distributed neural
networks connecting ...
Added: April 15, 2026
Barskaya E. S., Savin A. M., Chernov K. V. et al., International Journal of Molecular Sciences 2026 Vol. 27 No. 6 Article 2800
Copper–organic compounds are being investigated as antitumor candidates. Besides their efficacy as cytotoxic agents alone, the oxidative potential of electrochemical Cu2+-to-Cu1+ transition emerges as an attractive approach for elimination of tumor cells otherwise resistant to chemotherapy. To minimize side effects of the potent oxidative burst upon Cu(II) reduction, the metal cations should be delivered to the ...
Added: April 15, 2026
Pechenkova E., Паникратова Я. Р., Королькова О. А. et al., Вестник рентгенологии и радиологии 2025 Т. 106 № 6 С. 192–206
Background. Individual activation maps based on brain functional magnetic resonance imaging (fMRI) data cannot yet be applied to refine a patient's diagnosis and prognosis. However, tracking activation dynamics in the same patient during the course of treatment or rehabilitation can be useful for assessing their efficacy. Population-based studies often fail to identify clinically significant activation parameters ...
Added: April 2, 2026
Изнак Е. В., Дамянович Е. В., Береснева А. Ф. et al., Психиатрия 2024 Т. 22 № 6 С. 27–33
Background: the need to study and clarify the neurobiological basis of depression is due to the widespread prevalence and heavy socioeconomic burden of this disease. In order to prevent relapses, it is recommended to continue treatment for depression for a long time after the relief of the main depressive symptoms. The study of neurobiological pathways ...
Added: March 20, 2026
Изнак А. Ф., Изнак Е. В., Дамянович Е. В. et al., Журнал неврологии и психиатрии им. С.С. Корсакова 2024 Т. 124 № 9 С. 100–103
Objective. To search for neurophysiological correlates of the characteristics of the brain functional state in patients with endogenous depression with an ultra-high risk of developing psychosis in comparison with EEG parameters of patients without symptoms of a risk of developing psychosis and patients who have suffered psychotic episode. Material and methods. The study included 92 ...
Added: March 20, 2026
Карпова Н. С., Зозуля С. А., Shishkovskaya T. et al., ACTA BIOMEDICA SCIENTIFICA 2025 Т. 10 № 4 С. 182–191
Background. A current research on mental disorders ethiopathology is about to attract a special attention towards a possible role of inflammation/neuroinflammation related metabolic pathways. It has been shown that there is a close link between immunoinflammation and hemostasis. It might be assumed that the interrelated processes of inflammation and blood coagulation are the important elements ...
Added: March 20, 2026
Mokienko O., Вестник Российской академии медицинских наук 2024 Т. 79 № 5 С. 424–431
A brain-computer interface (BCI) is a system that measures brain activity and converts it in real-time into functionally useful outputs to replace, restore, enhance, supplement, and/or improve the natural outputs of the brain. In invasive BCIs, electrodes are placed intracranially for more accurate and faster data exchange between the brain and external devices. The primary ...
Added: March 18, 2026
Mokienko O., Современные технологии в медицине 2024 Т. 16 № 1 С. 78–90
Brain–computer interfaces allow the exchange of data between the brain and an external device, bypassing the muscular system. Clinical studies of invasive brain–computer interface technologies have been conducted for over 20 years. During this time, there has been a continuous improvement of approaches to neuronal signal processing in order to improve the quality of control ...
Added: March 18, 2026
Mokienko O., Люкманов Р. Х., Bobrov P. et al., Неврология, нейропсихиатрия, психосоматика 2024 Т. 16 № 5 С. 17–23
Motor imagery training under the control of a brain-computer interface (BCI) facilitates motor recovery after stroke. The efficacy of BCI based on electroencephalography (EEG-BCI) has been confirmed by several meta-analyses, but a more convenient and noise-resistant method of near-infrared spectroscopy in the BCI circuit (NIRS-BCI) has been practically unexamined; comparisons of the two types of ...
Added: March 18, 2026