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Molecular characterization of chicken DA systems reveals that the avian personality gene, , is expressed in the mitral cells of the olfactory bulb.
Front Neuroanat
January 2025
Department of Biological Sciences, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan.
Animal personalities are stable, context-dependent behavioral differences. Associations between the personality of birds and polymorphisms in the dopamine receptor D4 (DRD4) gene have been repeatedly observed. In mammals, our understanding of the role of the dopamine (DA) system in higher cognitive functions and psychiatric disorders is improving, and we are beginning to understand the relationship between the neural circuits modulating the DA system and personality traits.
View Article and Find Full Text PDFAmygdalo-cortical dialogue underlies memory enhancement by emotional association.
Neuron
January 2025
Laboratory for Haptic Perception and Cognitive Physiology, RIKEN Center for Brain Science, Wako-shi 351-0198, Saitama, Japan; RIKEN CBS-Kao Collaboration Center (BKCC), Wako-shi 351-0198, Saitama, Japan. Electronic address:
Emotional arousal plays a critical role in determining what is remembered from experiences. It is hypothesized that activation of the amygdala by emotional stimuli enhances memory consolidation in its downstream brain regions. However, the physiological basis of the inter-regional interaction and its functions remain unclear.
View Article and Find Full Text PDFIncreased default mode network activation in depression and social anxiety during upward social comparison.
Soc Cogn Affect Neurosci
January 2025
Center for Basic Research in Psychology (CIBPsi), Facultad de Psicología, Universidad de la República, Montevideo, Uruguay.
Social comparisons are a core feature of human life. Theories posit that social comparisons play a critical role in depression and social anxiety triggering negative evaluations about the self, as well as negative emotions. We investigated the neural basis of social comparisons in participants with depression and/or social anxiety (MD-SA, n=56) and healthy controls (n=47) using functional magnetic resonance imaging (fMRI).
View Article and Find Full Text PDFSineKAN: Kolmogorov-Arnold Networks using sinusoidal activation functions.
Front Artif Intell
January 2025
Department of Physics and Astronomy, The University of Alabama, Tuscaloosa, AL, United States.
Recent work has established an alternative to traditional multi-layer perceptron neural networks in the form of Kolmogorov-Arnold Networks (KAN). The general KAN framework uses learnable activation functions on the edges of the computational graph followed by summation on nodes. The learnable edge activation functions in the original implementation are basis spline functions (B-Spline).
View Article and Find Full Text PDFPosterior fossa ring-enhancing lesions in the adult immunocompetent host: illustrative cases, systematic review, and proposed diagnostic algorithm.
AJNR Am J Neuroradiol
January 2025
Department of Neurology, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium.
Purpose: Posterior fossa ring-enhancing lesions (PFREL) in the adult immunocompetent hosts pose a diagnostic challenge. We aimed to evaluate the spectrum of PFREL etiologies and propose a diagnostic algorithm.
Methods: This study involved a retrospective analysis of PFREL cases from our institution (January 2023 to April 2024) and a systematic literature review conducted using Embase and PubMed databases following the PRISMA 2020 guidelines.
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