Memory and Neural Mechanisms

The paper proposes experiments to distinguish mechanisms underlying hexadirectional fMRI modulations linked to grid-cell activity.

This study investigates how hippocampal representations of space differ based on navigational strategy in rats performing memory tasks.

This study shows that parietal gray matter volume expands and renormalizes within hours after associative learning, with changes linked to memory retention and sleep.

This study uses ultrasound to modulate the human hippocampus and shows it affects motor skill learning by altering the balance between practice and rest.

This study shows that the dentate gyrus enhances rate-based coding of subtle contextual differences while preserving global remapping in CA3, supporting a dual role in contextual discrimination.

This paper develops a computational framework to model hippocampal replay dynamics using drift-diffusion processes, revealing insights into replay speed, randomness, and preplay events in rat hippocampal recordings.

This study shows splitter cells are not necessary for task performance, as their removal allows network reorganization to maintain behavior.

This paper proposes a model showing how spatial navigation architectures can construct universal cognitive maps for abstract reasoning tasks like analogy making and perspective taking.

The paper shows that flexible spatial representations in hippocampal granule cells arise from multiple non-random plasticity mechanisms rather than a single unique rule.

This paper develops a computational model showing how transient excitability and synaptic consolidation in the hippocampus and cortex stabilize memory despite neural drift.

This study compares spatial coding in rat and tree shrew hippocampal CA1, finding a hybrid representation in tree shrews with multiplexed coding that achieves accuracy with fewer neurons.

The paper shows that sleep reverses hippocampal remapping by reinstating familiar representations, and this effect is mediated by prefrontal cortex activity.

This study shows that hunger and sleep use different brain systems to form spatial memory, with hunger relying on the retrosplenial cortex and sleep on hippocampal mechanisms.

This paper introduces a computational model showing that inhibitory-inhibitory plasticity enables stable recall of overlapping memory engrams through disinhibition.

The paper examines how CA1 reinstatement and novelty processing independently contribute to recognition memory using the Natural Scenes Dataset.

The paper examines hippocampal activity in rats during foraging under threat, finding distinct neural representations for reactive escape and anticipatory decision-making.

The paper shows that during food-carrying decisions, CA1 place codes become more precise, stable, and temporally organized compared to when mice eat food in place.

The paper proposes a mechanism where spike history gates plateau potentials in CA1 neurons, influencing when and where neural representations are rewritten based on prior activity.

The paper shows that the brain integrates distinct experiences based on the number, order, and timing of events across training stages in rats.

The paper shows that specific BLA neurons are recruited by oscillatory states to drive valence-related behaviors.

The paper identifies memory selective neurons in the human hippocampus that correlate with pattern separation and show behavioral relevance in episodic memory.

The paper analyzes a recurrent neural network model of CA3 pyramidal neurons to predict and confirm that their activation function has an exponent slightly above 1, supporting stable memory recall.

This study shows that high-intensity fear engrams causally contribute to cognitive and affective dysfunction beyond threat processing in mice.

This paper develops a toroidal continuous attractor network model to explain 3-D head direction coding in bats, showing how visual cues affect directional encoding.

The paper identifies median raphe projections as a pathway that modulates VIP interneuron recruitment and spatial memory during novel experiences.

This study identifies SERINC1 as a lipid regulator critical for neocortical synaptogenesis and remote memory by preserving specific phospholipids during memory consolidation.

The paper investigates neural activity in the amygdala during fear conditioning and finds that the amygdalostriatal transition area (AStria) exhibits LA-like responses and plasticity, while BA and CeA show limited responses.

This study investigates how the hippocampus contributes to explicit and implicit statistical learning in TLE patients, finding impairments in explicit measures but intact performance in implicit measures.

This study shows that sleep in juvenile rats supports schema memory formation without requiring mature episodic memory expression.

This study identifies the laminar organization of the primate hippocampus using physiological landmarks and reveals distinct firing patterns and functional coupling between cell types.