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Sleep microstructure organizes memory replay.
Nature
January 2025
Department of Neurobiology and Behavior, Cornell University, Ithaca, NY, USA.
Recently acquired memories are reactivated in the hippocampus during sleep, an initial step for their consolidation. This process is concomitant with the hippocampal reactivation of previous memories, posing the problem of how to prevent interference between older and recent, initially labile, memory traces. Theoretical work has suggested that consolidating multiple memories while minimizing interference can be achieved by randomly interleaving their reactivation.
View Article and Find Full Text PDFSocial odors drive hippocampal CA2 place cell responses to social stimuli.
Prog Neurobiol
December 2024
Center for Learning and Memory, The University of Texas at Austin, Austin, TX 78712; Department of Neuroscience, The University of Texas at Austin, Austin, TX 78712; Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712. Electronic address:
Hippocampal region CA2 is essential for social memory processing. Interaction with social stimuli induces changes in CA2 place cell firing during active exploration and sharp wave-ripples during rest following a social interaction. However, it is unknown whether these changes in firing patterns are caused by integration of multimodal social stimuli or by a specific sensory modality associated with a social interaction.
View Article and Find Full Text PDFComparing auditory and visual aspects of multisensory working memory using bimodally matched feature patterns.
Exp Brain Res
December 2024
Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, CNY 149, 13th St, Charlestown, MA, 02129, USA.
Working memory (WM) reflects the transient maintenance of information in the absence of external input, which can be attained via multiple senses separately or simultaneously. Pertaining to WM, the prevailing literature suggests the dominance of vision over other sensory systems. However, this imbalance may be stemming from challenges in finding comparable stimuli across modalities.
View Article and Find Full Text PDFRotational training structures and national employment in public health education: an organizational perspective.
BMC Med Educ
December 2024
Research Group 'Research & Innovation in Public Health Practice Based Learning' (RIPPLE), Netherlands School of Public and Occupational Health, 10th Floor, Churchilllaan 11, Utrecht, GV, 3527, The Netherlands.
Introduction: Postgraduate medical education (PGME) relies on structured training rotations and workplace-based learning (WBL) to provide comprehensive clinical training and professional development. Emphasizing WBL, PGME integrates theoretical knowledge with practical skills through direct patient care involvement, underscoring the pivotal role of training institutes in supporting these initiatives. While curricular changes in PGME have been extensively studied in clinical teaching hospitals, PGME programs in public health (PGME-PH) remain underexplored, yet their multidisciplinary nature post-COVID-19 underscores the urgency for effective curricular reforms.
View Article and Find Full Text PDFBreathing orchestrates synchronization of sleep oscillations in the human hippocampus.
Proc Natl Acad Sci U S A
December 2024
Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611.
Nested sleep oscillations, emerging from asynchronous states in coordinated bursts, are critical for memory consolidation. Whether these bursts emerge intrinsically or from an underlying rhythm is unknown. Here, we show a previously undescribed respiratory-driven oscillation in the human hippocampus that couples with cardinal sleep oscillations.
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