Articles tagged with Memory Consolidation
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Researchers at University College London discovered that Alzheimer's disease disrupts the brain's 'memory replay' process, leading to impaired navigation and memory loss. The study found that even when mice were resting, their brains replayed recent experiences in an altered pattern, which had consequences on memory tasks.
A new study reveals that astrocytes, a type of glial cell, are responsible for stabilizing memories through repeated engagement. The researchers found that Fos activity in astrocytes only occurs during recall, and that these cells can be activated to produce stable memories.
A study found that memories acquired while awake are stored in a more permanent form during REM sleep, requiring the reactivation of only three adult-born neurons involved in memory formation. This process is synchronized with theta rhythm activity and essential for proper memory function.
Research suggests that sleeping on a difficult task can improve performance by strengthening and consolidating memories in the brain. A new study found that rhythmic brain activity during sleep in areas active during training correlates with improved task performance after waking.
A new study published in Brain Medicine found that administering Osanetant shortly after a traumatic event significantly dampens fear expression in female mice. This suggests that targeting fear memory at its roots may be an effective intervention to reduce PTSD-like behaviors.
A study found that people with delayed REM sleep have higher levels of toxic proteins amyloid and tau, and lower levels of healthy protein BDNF, which can increase the risk of developing Alzheimer's. Practicing healthy sleep habits may help mitigate this risk.
A study published in Nature found that new memories are replayed and consolidated when the pupil contracts during non-REM sleep, while older memories are replayed when the pupil dilates. This micro-structure separates new learning from old knowledge, preventing 'catastrophic forgetting'.
A new study by Northwestern University researchers found that breathing rhythms coordinate hippocampal brain waves during sleep, strengthening memory consolidation. This synchronization is critical for proper memory formation and retrieval, with implications for treating disordered breathing during sleep, such as sleep apnea.
Research finds that adults outperform children in learning new motor skills, with older individuals improving faster and retaining skills longer. Better sleep appears to benefit children's learning and memory more, but other factors like sleep deprivation may also play a role.
A Cornell University study finds that sleep resets vital brain function by silencing certain parts of the hippocampus, allowing neurons to reset and enable new learning. This mechanism could lead to breakthroughs in boosting memory and erasing negative memories in conditions like Alzheimer's disease and PTSD.
Researchers discovered a striking similarity between AI models and the human brain's hippocampus, which enables powerful AI systems. By mimicking the NMDA receptor's gating process, they improved long-term memory in Transformer models.
Researchers found that Period 1 gene becomes more active in memory-forming region of brain in daylight hours after learning, playing crucial role in consolidating memories. Mice exhibit improved daytime memory performance compared to nighttime.
Researchers propose a new mathematical neural network theory that consolidates memories to the neocortex if they improve generalization. This view contradicts the classical understanding of systems consolidation, which assumes all memories move from the hippocampus to the neocortex over time.
A new study published in Aging (Albany NY) suggests that prior training can rescue cognitive decline in aging by improving task performance and strengthening memory processes. The research, conducted on rats, found that prior training enhanced short-term and intermediate memory, while also enabling encoding-boosted long-term memory.
Researchers at the University of Hong Kong have made a breakthrough in understanding how memories are consolidated in the brain. Using functional MRI, they found that thalamic spindle activities can improve memory retention and activate specific areas of the brain.
Researchers from Tel Aviv University and UCLA developed a method to improve memory consolidation by inducing deep-brain stimulation during sleep. The study found that precise timing of electrical stimulation enhances synchronization between the hippocampus and frontal cortex, leading to improved accuracy in recalling memories.
Researchers found that targeted deep-brain stimulation during a critical sleep cycle improved memory consolidation in patients with epilepsy. The study provided physiological evidence from inside the human brain supporting the main theory for how memory is consolidated during sleep.
Dogs with canine cognitive dysfunction syndrome (CCDS) display altered brain wave activity during sleep, including reduced slow-wave sleep and increased fast beta waves. This research builds on human studies linking disrupted sleep patterns to cognitive decline in Alzheimer's patients.
Researchers used virtual reality to study how memories are selected for long-term storage, revealing the anterior thalamus as a crucial stopover site. Stimulating this region enhanced memory consolidation, while inhibiting it hindered long-term retention.
A new study identifies the anterior thalamus as a key brain region linking short-term to long-term memory. The thalamus plays a crucial role in memory consolidation, stabilizing memories from the hippocampus into long-term storage in the cortex.
Researchers found that clonidine, a common blood pressure medication, can reduce the consolidation of traumatic memories in PTSD patients. By interacting with the adrenergic receptor axis, clonidine interferes with cofilin's ability to form mushroom-shaped dendritic spines, which are essential for memory formation. This suggests that c...
Researchers found that remote fear memories are permanently stored in connections between memory neurons in the prefrontal cortex. The study suggests that a dysregulation of fear memory consolidation can lead to chronic maladaptive fear in PTSD, affecting about 6% of the population.
During sleep, brain regions synchronize to create motor memory by reviewing trials and errors of a given action. The study found that the
Small cell clusters in hippocampus are vital for fear-based memories, while sleep helps stabilize these clusters to improve memory. The study uses immediate early gene imaging to visualize active cells throughout the entire rat hippocampus.
A study by Ural Federal University found that daytime naps and wakefulness both reinforce the formation of fear memories in response to emotional trauma. This research has significant implications for developing strategies for rehabilitating individuals with anxiety disorders.
A new theory by UMass Amherst sleep scientist Rebecca Spencer suggests that young children's brain development, not age, determines when and why they stop napping. The hippocampus, a memory area of the brain, plays a critical role in nap transitions.
Researchers at Linköping University discovered a biological mechanism that increases the strength of fear memories stored in the brain. This finding provides new knowledge on the mechanisms behind anxiety-related disorders and identifies shared mechanisms with alcohol dependence.
A University of Ottawa research team has made new discoveries on how motor skills are learned and stored in the brain. By studying mice, they found that a specific transcription factor called NPAS4 regulates gene changes in inhibitory neurons, leading to the formation of learning-associated neuron ensembles.
Despite previous assumptions, researchers found no correlation between highly superior autobiographical memory and enhanced creative thinking. Instead, they suggest that these individuals may be overly focused on consolidating autobiographical events, potentially hindering creative processes.
Research by Tohoku University scientists found that contextual fear conditioning alters genes associated with the synapse in microglia, indicating a new mechanism linking microglia and neuronal activity related to fear conditioning. This non-immune communication may play a key role in fear memory consolidation and extinction.
Researchers measured wolf sleep using non-invasive EEG, finding similarities with dog sleep but less REM time. The study offers a unique opportunity to understand the effects of domestication and cohabitation on wolf sleep phenotypes.
Researchers found brain ripples in all areas of the human cortex, synchronizing distant elements of memory upon recollection. The ripples involve brief, high-frequency oscillations that promote neural interactions and potentially support interaction between distant locations.
Researchers at Florida Atlantic University found that mice can perceive the difference between a picture of an object and the actual 3D object, employing higher-order cognitive processes. The study suggests that mice's hippocampus plays a significant role in associating memories with visual stimuli.
Researchers found that repetitive exposure to environmental hypoxia prevented memory loss and reversed impairments in nerve-to-nerve communication. Adult offspring also inherited this protection against dementia.
A transdisciplinary research team at Göttingen Campus has found a new perspective on the rhythmic processes in the brain. They discovered that adapting interneurons can switch between very slow rhythms and fast rhythms, challenging previous assumptions about their function.
Researchers have discovered the Apterous protein's crucial role in retaining memories through its interaction with the Chi cofactor and regulation of neurotransmitters. In fruit flies, Ap plays a double role in long-term memory consolidation, highlighting potential new treatment approaches for memory-related disorders.
University of Michigan scientists found that RNAs associated with an understudied cell compartment in hippocampal neurons vary greatly between sleeping and sleep-deprived mice after learning. These changes are present almost exclusively on ribosomes associated with neuronal cell membranes, suggesting a novel mechanism for memory storage.
Researchers at Kyoto University developed a new neural-optic system to manipulate memories by inhibiting key proteins. This technique can help isolate memory formation and potentially lead to treatments for mental disorders like Alzheimer's disease and schizophrenia.
Research suggests the hippocampus is necessary for remembering chronological relationships between visual stimuli, but not storing individual images. This finding could bring neuroscientists closer to understanding how the brain coordinates long-term visual memory.
Researchers used AI to analyze brain activity during deep sleep, finding that the brain relives memories of rewarding experiences and consolidates them through an internal dialogue. This process enhances memory performance, particularly for emotionally charged events.
Neuroscientists at UCL have identified abnormalities in the way memories are 'replayed' in the brains of people with schizophrenia. The study found that individuals with schizophrenia were less able to build a structure of the task, with impaired neural replay linked to their symptoms.
Researchers found that people who experience earworms regularly at night are six times more likely to have poor sleep quality. Instrumental music is more likely to lead to earworms and disrupt sleep than lyrical music. Moderating music listening or engaging in cognitive activities can help alleviate the issue.
Researchers found that during rest, the brain rapidly replays compressed versions of previously practiced activities, strengthening memories and improving subsequent practice sessions. This study suggests that wakeful rest plays a crucial role in learning new skills and may be used to facilitate rehabilitation from stroke.
Researchers found that neural replay of a newly learned skill occurred during waking rest periods, approximately 20 times faster than the actual behavior. Frequent replay events were associated with greater skill consolidation and improved performance.
Scientists have discovered that slow oscillations and sleep spindles play a crucial role in memory formation and consolidation, with the precise combination of these patterns creating windows for reactivation of previously learned information. This process helps solidify memories in long-term stores and improves recall.
Researchers developed a neural implant that monitors brain activity in multiple areas simultaneously. The study reveals two-way communication between the hippocampus and cerebral cortex during learning and memory formation, tied to sharp-wave ripples.
A study by Scripps Research has discovered a memory gating system employing dopamine to direct transient forgetting, a temporary lapse of memory that spontaneously returns. The mechanism was found to be separate from long-term memory recall.
Neuroscientists at Harvard Medical School have identified a critical gene, Fos, that allows neurons to rewire inputs from other neurons, enabling networks of disparate neurons to coordinate activity. This mechanism is thought to be essential for memory consolidation and recall.
A new study shows that getting only half a night's sleep hijacks the brain's activity during learning and memory consolidation, leading to increased vulnerability to conditions like anxiety and posttraumatic stress disorder. The research found that even partial sleep deprivation can be worse than no sleep at all.
A McGill-led research team found that protein synthesis in inhibitory cells plays a crucial role in controlling long-term memory. The study identified two distinct processes taking place in excitatory and inhibitory networks, with each neuronal system capable of selective manipulation for memory control.
Neuroscientists at UNIGE discover that intense physical exercise improves memory and brain activation, particularly in young individuals. Regular sports activity can potentially enhance learning and reduce the risk of neurodegenerative diseases like Alzheimer's.
Researchers used computational models to examine how sleep encodes new memories while preventing damage to old ones. The study suggests that memories, even old ones, are dynamic and constantly updated during sleep, which helps prevent forgetting and increases recall performance.
Scientists have discovered that changes in brain cartilage cells regulate memory changes during sleep, making memories stronger and weaker. Sleep deprivation prevents these changes, suggesting that altering the structure of perineuronal nets may be one of the mechanisms behind sleep-induced memory consolidation.
Research reveals that a reward should neither be too small nor too large to optimize memory encoding. The brain needs rewards to motivate us, but also challenges, and the perfect balance allows for better memory consolidation.
Adult-born neurons in the hippocampus play a crucial role in memory consolidation during REM sleep, according to a study published in Neuron. The researchers found that activity in these neurons is necessary for memory consolidation and that synaptic changes occur during learning, enabling memory formation.
Research published in Neuron found that adult-born neurons are essential for synaptic structural remodeling and memory consolidation during rapid eye movement sleep in mice. The study used optogenetics to manipulate ABN activity during REM sleep and showed that reactivation of ABNs during sleep consolidates memory.
The claustrum is a key structure in coordinating brain activity across multiple senses and areas. Researchers found that slow-wave brain activity, characteristic of sleep states, is controlled by the claustrum.
Researchers found that human brains replay neural firing patterns experienced while awake during sleep, supporting the idea of memory consolidation. The study used intracortical microelectrode arrays to record neuronal activity in two participants playing a sequence-copying game before and after sleep.
A new neural probe design captures lost signals in brain activity, enabling experiments previously impossible. The probe's improved shielding and boron-infused silicon increase conductivity, allowing researchers to modulate neurons with high temporal resolution.
Scientists from Boston University's Center for Systems Neuroscience found that scents trigger memories even years later and can reinvigorate forgotten details. The study suggests using odors as a therapeutic tool to treat PTSD and other mental health conditions.