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http://dx.doi.org/10.1111/pcmr.13084 | DOI Listing |
J Sleep Res
August 2025
Unit of Neurology, Department of Medicine and Surgery, University of Parma, Parma, Italy.
The aim of this paper is to review the phenomenon of bistability, a basic working mode of NREM sleep. The perpetual oscillations between two opposite states in sleep slow waves, K-complexes as well as in the Cyclic Alternating Pattern (CAP) on a different time scale; appear spontaneously and can also be elicited by sensory stimulation, representing a response of the sleeping brain. Although there is extensive literature on bistability, its significance remains obscure.
View Article and Find Full Text PDFMaterials (Basel)
July 2025
Faculty of Technical Sciences Čačak, University of Kragujevac, 32102 Cacak, Serbia.
The aim of this study was to determine the connection between oscillations in operating pressure values and the appearance of various irregularities on machined surfaces. Such oscillations are a consequence of the high water pressure generated during abrasive water jet machining. Oscillations in the operating pressure values are periodic, namely due to the cyclic operation of the intensifier and the physical characteristics of water.
View Article and Find Full Text PDFNeural Comput Appl
November 2024
Department of Computer Science and Department of Internal Medicine, Institute for Biomedical Informatics (IBI), University of Kentucky, Lexington, KY, USA.
Circadian rhythms are driven by an internal molecular clock which controls physiological and behavioral processes. Disruptions in these rhythms have been associated with health issues. Therefore, studying circadian rhythms is crucial for understanding physiology, behavior, and pathophysiology.
View Article and Find Full Text PDFLight is the principal cue for synchronizing the circadian clock. A common feature of the clock among all organisms is the lack of responsiveness to light during the daytime. To understand the interaction between the circadian clock and light, we described the transcriptome of the suprachiasmatic nucleus (SCN) in mice across different circadian times under both constant darkness (DD) and in response to light exposure.
View Article and Find Full Text PDFPhys Rev E
June 2025
Santa Fe Institute, University of California, Davis, Department of Environmental Science and Policy, California 95616, USA and , 1399 Hyde Park Road, Santa Fe, New Mexico 87501, USA.
Many ecological populations are known to display a cyclic behavior with period 2. Previous work has shown that when a metapopulation (a group of coupled populations) with such dynamics is allowed to interact via nearest-neighbor dispersal in two dimensions, it undergoes a phase transition from disordered (spatially asynchronous) to ordered (spatially synchronous) that falls under the two-dimensional Ising universality class. While nearest-neighbor dispersal may satisfactorily describe how most individuals migrate between habitats, we should expect a small fraction of individuals to venture on a journey to further locations.
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