In 38 anesthetized cats, homotopic transcallosal responses (TCR) were studied in somatosensory, visual, auditory, sensomotor and temporal areas. The TCR were found to be functionally asymmetrical. Some specific features of the TCR asymmetry were revealed in males and females. The asymmetry was of the same direction in sensomotor and somatosensory, visual and temporal areas, whereas it was opposite in its direction in visual and auditory areas. The changes of the TCR asymmetry seem to be due to formation of a new system of functional interzonal intra- and interhemispheric connexions.
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Biosens Bioelectron
January 2025
Emotion, Cognition, & Behavior Research Group, Korea Brain Research Institute 61, Cheomdan-ro, Dong-gu, Daegu, 41062, Republic of Korea. Electronic address:
In this study, we present ECoGScope, a versatile neural interface platform designed to integrate multiple functions for advancing neural network research. ECoGScope combines an electrocorticography (ECoG) electrode array with a commercial microendoscope, enabling simultaneous recording of ECoG signals and fluorescence imaging. The electrode array, constructed from highly flexible and transparent polymers, ensures conformal contact with the brain surface, allowing unobstructed optical monitoring of neural activity alongside electrophysiological recordings.
View Article and Find Full Text PDFBrain Behav Immun
January 2025
Department of Biology, Neuroendocrinology and Human Biology Unit, Institute for Animal Cell- and Systems Biology, Faculty of Mathematics, Informatics and Natural Sciences, Universität Hamburg, D-22085 Hamburg, Germany. Electronic address:
This study investigated the neural correlates of perceiving visual contagion cues characteristic of respiratory infections through functional magnetic resonance imaging (fMRI). Sixty-two participants (32f/ 30 m; ∼25 years on average) watched short videos depicting either contagious or non-contagious everyday situations, while their brain activation was continuously measured. We further measured the release of secretory immunoglobulin A (sIgA) in saliva to examine the first-line defensive response of the mucosal immune system.
View Article and Find Full Text PDFJ Neurophysiol
January 2025
Neuroscience Research Institute, Seoul National University Medical Research Center, Seoul, Korea.
Previous studies have shown that high-gamma (HG) activity in the primary visual cortex (V1) has distinct higher (broadband) and lower (narrowband) components with different functions and origins. However, it is unclear whether a similar segregation exists in the primary somatosensory cortex (S1), and the origins and roles of HG activity in S1 remain unknown. Here, we investigate the functional roles and origins of HG activity in S1 during tactile stimulation in humans and a rat model.
View Article and Find Full Text PDFiScience
January 2025
Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland.
The recognition of conspecifics, animals of the same species, and keeping track of changes in the social environment is essential to all animals. While molecules, circuits, and brain regions that control social behaviors across species are studied in-depth, the neural mechanisms that enable the recognition of social cues are largely obscure. Recent evidence suggests that social cues across sensory modalities converge in a thalamic area conserved across vertebrates.
View Article and Find Full Text PDFJ Neurophysiol
January 2025
Department of Sports Science, Zhejiang University, Hangzhou, Zhejiang, China.
Human postural control system has the capacity to adapt to balance-challenging perturbations. However, the characteristics and mechanisms of postural adaptation to continuous perturbation under the sensory conflicting environments remain unclear. We aimed to investigate the functional role of oscillatory coupling drive to lower-limb muscles with changes in balance control during postural adaptation under multisensory congruent and incongruent environments.
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