The hippocampus is thought to form cognitive maps across different domains of experience, including space and time. Recent work by Knudsen and Wallis identifies a map of abstract value space in the monkey hippocampus. We consider how these abstract variables might contribute to a comprehensive hippocampal representation of ongoing experience.
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http://dx.doi.org/10.1016/j.tics.2021.10.007 | DOI Listing |
BMC Geriatr
January 2025
Department of Creative Product Design, Asia University, Taichung, Taiwan.
Alzheimer's disease (AD) is a complex, progressive, and irreversible neurodegenerative disorder marked by cognitive decline and memory loss. Early diagnosis is the most effective strategy to slow the disease's progression. Mild Cognitive Impairment (MCI) is frequently viewed as a crucial stage before the onset of AD, making it the ideal period for therapeutic intervention.
View Article and Find Full Text PDFNeuron
January 2025
Neuropsychology and Cognitive Neuroscience Unit, Department of Psychology, University of Zurich, Zurich, Switzerland; Neuroscience Center Zurich, University of Zurich, Zurich, Switzerland. Electronic address:
Prefrontal cortex and medial temporal lobe information processing might not be that different after all. In this issue of Neuron, Whittington et al. show that prefrontal cortex working memory slot activity enables sequence memorizing similar to hippocampal long-term memory.
View Article and Find Full Text PDFNeuron
January 2025
Department of Biology, Washington University in Saint Louis, St. Louis, MO, USA. Electronic address:
In this issue of Neuron, Ruggiero et al. demonstrate that hippocampal networks maintain a stable mean firing rate despite unstable individual units. This homeostatic control operates through NMDAR-eEF2K-BDNF signaling in parvalbumin interneurons.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
January 2025
Ernst Strüngmann Institute, Frankfurt am Main 60528, Germany.
The dynamics of neuronal systems are characterized by hallmark features such as oscillations and synchrony. However, it has remained unclear whether these characteristics are epiphenomena or are exploited for computation. Due to the challenge of selectively interfering with oscillatory network dynamics in neuronal systems, we simulated recurrent networks of damped harmonic oscillators in which oscillatory activity is enforced in each node, a choice well supported by experimental findings.
View Article and Find Full Text PDFNeurochem Res
January 2025
Department of Pathophysiology, Medical University of Lublin, 20-090, Lublin, Poland.
Methionine sulfoximine (MSO) is a compound originally discovered as a byproduct of agene-based milled flour maturation. MSO irreversibly inhibits the astrocytic enzyme glutamine synthase (GS) but also interferes with the transport of glutamine (Gln) and of glutamate (Glu), and γ-aminobutyric acid (GABA) synthesized within the Glu/Gln-GABA cycle, in this way dysregulating neurotransmission balance in favor of excitation. No wonder that intraperitoneal administration of MSO has long been known to induce behavioral and/or electrographic seizures.
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