Article
Neurosciences
Quan Zhang, Baotian Zhao, Wolf-Julian Neumann, Hutao Xie, Lin Shi, Guanyu Zhu, Zixiao Yin, Guofan Qin, Yutong Bai, Fangang Meng, Anchao Yang, Yin Jiang, Jianguo Zhang
Summary: The study shows that low-frequency oscillations play a crucial role in cognitive conflict, linking the frontal and parietal cortex with STN during conflicts, and the ipsilateral PMC-STN connection is specifically involved in this cognitive conflict processing.
Article
Physics, Multidisciplinary
Yu Qian, Zhao Lei, Zegang Wei, Xiaohua Cui, Chaoyang Zhang, Zhigang Zheng
Summary: In this study, two oscillation modes, namely the major oscillation mode and the minor oscillation mode, were found to exist in excitable homogeneous random networks. The dynamics of these modes are influenced by system parameters, leading to transfer and transition dynamics. Additionally, the minimum Winfree loop and excitation threshold were identified as determinants of oscillation-mode dynamics in EHRNs.
Article
Physics, Applied
Fu-Feng Wang, Tian-Hang Meng, Da-Ren Yu, Zhong-Xi Ning, Xi-Ming Zhu
Summary: Low-power electric propulsion system with small orifice cathode has high application prospects, but serious erosion affects the reliability of the cathode. This study found that high-energy ions are generated in the cathode plume area when the energy of the cathode is concentrated at low frequencies. Inhibiting the oscillation at this frequency band is crucial to extend the cathode's life.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Multidisciplinary Sciences
Farzin Akbar, Boris Rivkin, Azaam Aziz, Christian Becker, Dmitriy D. Karnaushenko, Mariana Medina-Sanchez, Daniil Karnaushenko, Oliver G. Schmidt
Summary: By mimicking the oscillatory behavior seen in biological entities, researchers have successfully developed a self-oscillating microsystem that can generate rhythmic motion at high frequencies. This advancement in technology offers new possibilities for artificial life by replacing and mimicking nature's propulsion and pumping units.
Article
Psychiatry
Larissa Allgauer, Jan-Harry Cabungcal, Catherine Yzydorczyk, Kim Quang Do, Daniella Dwir
Summary: A large body of evidence suggests that intrauterine growth restriction (IUGR) can cause long-term cognitive and behavioral deficits, as well as increasing the risk of schizophrenia (SZ). Oxidative stress and neuroinflammation play important roles in the pathophysiology of SZ and can affect the development of parvalbumin interneurons (PVI) and their perineuronal nets (PNN). However, these pathways have not been explored in IUGR models. New research has proposed the MMP9-RAGE pathway as a potential mechanism for persistent damage to PVIs. Maternal protein deficiency during gestation can induce oxidative stress and neuroinflammation in adolescent rats with IUGR, leading to decreased PVIs and PNNs and increased levels of MMP9 and RAGE shedding. Maternal diet is an important factor for proper neurodevelopment and may have implications for SZ.
TRANSLATIONAL PSYCHIATRY
(2023)
Article
Mathematics, Applied
Adriane S. Reis, Eduardo L. Brugnago, Ibere L. Caldas, Antonio M. Batista, Kelly C. Iarosz, Fabiano A. S. Ferrari, Ricardo L. Viana
Summary: The study focuses on neuronal synchronization in the brain, highlighting the relationship between synchronized activities in neurons and cognitive processes, as well as synchronous oscillations in brain disorders. Mathematical modeling and experimental research have shown the presence of scale-free networks in some regions of the cortex. By using the Rulkov model and external perturbation, the study aims to suppress neuronal burst synchronization and achieve better results compared to the time-delayed feedback method.
Article
Biology
Eitan E. Asher, Meir Plotnik, Moritz Gunther, Shay Moshel, Orr Levy, Shlomo Havlin, Jan W. Kantelhardt, Ronny P. Bartsch
Summary: Through analyzing synchronization networks of EEG brain waves from three PD patient groups with varying FoG severity, the study found that increased PD and FoG severity is associated with higher EEG amplitude synchronization between different brain locations. The results suggest a potential relationship between PD/FoG severity and overall EEG synchronization, providing insight into the pathophysiology leading to FoG.
COMMUNICATIONS BIOLOGY
(2021)
Article
Physics, Applied
Parker J. Roberts, Vernon H. Chaplin, Alejandro Lopez Ortega, Ioannis G. Mikellides
Summary: This study experimentally characterizes plasma oscillations below 100kHz in a high-power, magnetically shielded Hall-effect thruster. A laser-induced fluorescence diagnostic was used to measure the evolution of the axial ion velocity distribution. A method was developed to correct for artificial broadening of the distribution and accurately measure ion temperature. The research reveals time-dependent ion heating behavior and the exchange of energy between ions and oscillations.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Neurosciences
Andrea Ibarra Chaoul, Markus Siegel
Summary: The study investigated the correlation of aperiodic neuronal population activity in the human brain using resting-state magnetoencephalography, finding robust correlations across the cortex with structured spatial patterns. The cortical correlation structure of aperiodic activity was found to be similar but distinct from oscillatory neuronal activity, particularly in anterior cortical regions. The results suggest that aperiodic population activity serves as markers of cortical network interactions and provides non-redundant information about large-scale neuronal correlations.
Article
Biochemistry & Molecular Biology
Francesco Di Gregorio, Jelena Trajkovic, Cristina Roperti, Eleonora Marcantoni, Paolo Di Luzio, Alessio Avenanti, Gregor Thut, Vincenzo Romei
Summary: This study reveals the role of alpha oscillations in human conscious experience. Controlling alpha frequency with rTMS can influence perceptual accuracy, while controlling alpha amplitude can affect the ability to distinguish between correct and incorrect decisions in subjective confidence judgments.
Article
Engineering, Electrical & Electronic
Weichao Li, Deyu Cai, Shouyuan Wu, Gang Zhang, Feng Zhang
Summary: This paper presents a methodology for analyzing the impact of supplementary active power control (SAPC) on the low-frequency oscillatory stability of power systems with high penetration of wind energy. Mathematical modeling is used to analyze the impact of SAPC on oscillatory stability, and nonlinear simulations are conducted to demonstrate this impact. The simulation results show that SAPC has significant impacts on low-frequency oscillatory stability. The methodology is a powerful tool for analyzing oscillations and designing damping controllers in power systems with high penetration of wind energy.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Energy & Fuels
Ahmed Hesham Abd El-Kareem, Mohamed Abd Elhameed, Mahmoud M. Elkholy
Summary: This paper investigates the effective damping of low-frequency oscillations in the rotor speed of synchronous generators by incorporating a supplementary damping controller with a photovoltaic generating station, optimally coordinated with a power system stabilizer. The proposed method successfully dampens local electromechanical modes and the optimization algorithms used demonstrate the effectiveness of the controller in damping oscillations.
PROTECTION AND CONTROL OF MODERN POWER SYSTEMS
(2021)
Article
Multidisciplinary Sciences
Naho Konoike, Haruhiko Iwaoki, Miki Miwa, Honami Sakata, Kosuke Itoh, Katsuki Nakamura
Summary: This study compared the characteristics of auditory steady-state responses (ASSRs) among humans, rhesus monkeys, and marmosets. The results showed that although the optimal frequency for synchronization differed, monkeys and marmosets also exhibited auditory event-related potentials and phase-locking activity in gamma-frequency trains. This suggests that ASSR could be a useful cross-species translational biomarker.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Aerospace
Mariza Pereira de Souza Echer, Ezequiel Echer, Margarete Oliveira Domingues, Odim Mendes, Rodrigo Takeshi Seo, Walter Gonzalez
Summary: The study used continuous wavelet transform analysis to investigate magnetic field data of Jupiter and identified different periodic signals related to the internal processes of Jupiter's magnetosphere, including 10 hours, 5 hours, 1.5 to 3.5 days, and 5 to 35 days. These periodic signals may be associated with global reconfiguration in Jupiter's magnetosphere, mass-loading from moon Io, and modulation by the solar wind.
ADVANCES IN SPACE RESEARCH
(2021)
Article
Biology
Therese Lennert, Soheila Samiee, Sylvain Baillet
Summary: The study by Lennert et al. shows that individual recalibration behavior in response to audiovisual asynchrony is related to fast oscillations in the auditory cortex, shedding light on how brain oscillations contribute to forming unified percepts across senses. This highlights the role of cross-frequency coupled oscillations in integrating auditory and visual signals in the brain.
COMMUNICATIONS BIOLOGY
(2021)
