Articles tagged with Memory Formation
Scientists have used high-speed atomic force microscopy to observe the structural dynamics of CaMKII protein, shedding light on its role in modulating neural connections. The study reveals that the protein's structure changes in response to calcium and calmodulin binding, leading to a form of molecular memory.
Researchers establish a direct link between Covid-19 and Alzheimer's disease, attributing the connection to RAS overactivation caused by SARS-CoV-2 virus. This dysfunction leads to increased b-amyloid protein accumulation, impairing brain cell synaptic connections and cognitive functions.
A study found that social isolation is associated with a decrease in hippocampal volume, poorer cognitive performance, and an increased risk of developing conditions like Alzheimer's dementia. Conversely, maintaining a healthy social network can help preserve brain structure and function.
Researchers at the Institute for Basic Science have identified specific neurons in the hippocampus that allow us to recognize individual social counterparts and update their value through interactions. The dorsal CA1 region plays a crucial role in this process, enabling long-term memories of individuals to be formed.
Researchers discovered a specific form of ubiquitin protein selectively involved in forming fear memories in female brains, providing a potential target for therapeutic treatments. The finding could lead to more effective treatment options for post-traumatic stress disorder (PTSD) in females.
Researchers have identified a molecular mechanism underlying the change from gist-like to episodic memory in mice, suggesting that as interneurons mature, they enable memory specificity. This finding has implications for understanding child development research and conditions affecting the brain, such as autism spectrum disorder.
Researchers used AI to study how the hippocampus produces varied replay types efficiently and their purpose. The model showed that sequences are prioritized stochastically according to familiarity and reward positions.
The gene LRRC4 regulates synapse formation, stability and excitatory transmission, playing a crucial role in learning, memory formation and storage. It also has key implications in neuronal disorders and aggressive brain and spinal cord cancer.
A study published in Current Biology reveals that the hippocampus uses a specific neural mechanism to alternate between forming new memories and retrieving existing ones. The researchers found that gamma oscillations are coupled to theta waves, with different frequencies associated with encoding and retrieval processes.
Researchers found that psilocybin facilitates fear extinction in mice by promoting hippocampal neuroplasticity. The study's results improve our understanding of the restorative effects of psilocybin on the brain and may lead to alternative treatments for PTSD.
Researchers have identified a subset of neurons in the mammillary body that are most susceptible to neurodegeneration and hyperactivity in Alzheimer's disease. These findings suggest that this region may contribute to early symptoms of the disease, making it a potential target for new drugs.
Researchers have identified α5-GABAARs on interneurons as key receptors regulating memory formation in the hippocampus. Selectively knocking out these receptors from interneurons impaired spatial memory, while leaving pyramidal neurons unaffected.
Researchers found that rats, like humans, tend to overestimate the likelihood of two events occurring together. This study suggests a shared cognitive mechanism between humans and animals, which could have implications for understanding psychopathological conditions.
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 identified a crucial molecular process involving gene expression in neurons that contributes to early memory loss and Alzheimer's disease. Genetic alterations in mice showed that lack of phosphorylation on beta-2 adrenergic receptors led to poor memory, while PDE inhibitors improved memory function.
Scientists have identified distinct mechanisms by which people remove information from their working memory and found that forgetting requires much effort. They also discovered four brain networks that activate when memories are maintained or purged through different mechanisms.
Two early-career cognitive neuroscientists, Anna Schapiro and Freek van Ede, have been awarded the prestigious Young Investigator Award by the Cognitive Neuroscience Society. Their research focuses on understanding human learning and working memory.
A new subset of memory B cells, marked by the FcRL5 receptor protein, has been identified as a predictor of long-lived antibody responses to influenza vaccination. These effector memory B cells can be detected seven days after immunization and correlate with vaccine antibody responses months later.
A new study published in Current Biology found that the hippocampus and prefrontal cortex must synchronize their neural assemblies to support memory encoding, maintenance, and recall. Disruption of this synchronization leads to memory loss, presenting a viable target for therapeutic interventions.
Researchers use movie clips to study mouse brain activity, revealing novel ways to diagnose learning and memory disorders. The discovery points to new ways to tackle Alzheimer's and improve artificial intelligence.
Scientists at the University of Florida have discovered that long-term memories are formed through experience-dependent changes in protein sets, which undergo reorganization to encode the brain's circuitry. This finding provides insight into the brain's plasticity and has potential implications for understanding neurological disorders.
Researchers developed HippoCamera, a new smartphone app that significantly improves memory recall by boosting attention to daily events. Users record videos and audio descriptions of everyday experiences, which are then replayed to reinforce memory consolidation.
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.
A recent study suggests that stimulating the intersection of two particular brain networks correlated with better patient outcomes than stimulating nearby sites for patients with Alzheimer's disease. Cognitive improvement was associated with DBS to the direct interface between the fornix and bed nucleus of the stria terminalis.
Researchers at MIT have discovered that the adult brain contains millions of silent synapses, which may explain how the brain forms new memories without modifying existing connections. These inactive connections can be recruited to help form new memories when important new information is presented.
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.
Researchers at Washington University School of Medicine studied 350 people to understand how Alzheimer's disease affects the brain. The study found that gene APOE is active in the areas most damaged by the disease, leading to symptoms like language and vision problems.
Researchers created a detailed map of the hippocampus's connections to the rest of the brain, finding fewer links with frontal lobes but more with visual networks. This discovery may change how we think about human memory and cognition, potentially shedding light on why some primates excel at certain memory tasks.
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.
Researchers used a neural network model to study how brain regions interact during sleep. They found that the hippocampus and neocortex work together to convert fleeting information into long-term memory. The findings suggest that alternating between REM and slow-wave sleep stages is crucial for strong memory formation.
Researchers at the University of Basel have discovered a new function of the cerebellum in storing emotional experiences, which is crucial for our survival. The study shows that increased activity in the cerebellum facilitates the storage of information in various areas of the cerebrum, leading to improved memory for emotional events.
Researchers at Boston University have found a way to manipulate emotional memories using optogenetics, allowing them to rewrite and reduce the potency of negative memories. The study reveals that positive and negative memories are stored in distinct regions of the brain and communicate through different pathways.
Researchers found significantly larger neurons in the brain's memory region of SuperAgers compared to cognitively average peers, individuals with early-stage Alzheimer's disease, and younger individuals. These larger neurons were spared from tau tangles, a hallmark of Alzheimer's disease, suggesting they may maintain structural integrity.
A study by neuroscientists at New York University reveals that the brain's machinery interacts in nuanced ways to form long-term memories. The researchers found that neurons can sense not only repetition but also the order of repeated experiences, allowing them to discriminate between different patterns and build memories.
A Brazilian-American research team has identified a subtype of inhibitory interneurons that can gauge speed with great precision. These neurons are more stable than excitatory neurons and may be linked to spatial memory and the ability to remember routes or locations.
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.
Research finds that a single dose of alcohol permanently changes brain structure and function, leading to increased risk of addiction. The study used fruit flies and mice models to show that ethanol-induced changes in mitochondrial dynamics and synapse balance contribute to long-lasting behavioral changes.
A recent study has identified the tau protein's involvement in normal learning and memory processes in the healthy brain. The researchers used proximity labelling to map out all proteins that interact with tau and found that it interacts with enzymes controlling vesicles and cell surface receptors for neurotransmitters.
A new study found that neurons with the same birthdate show distinct connectivity and activity throughout adulthood, forming cooperative signaling circuits. This suggests that the brain may exploit orderly neuronal layer formation to establish neural templates that match each new experience to an existing template.
Researchers found that increasing new neurons in mice with AD rescues their memory defects by restoring neural circuits and dendritic spines. Boosting neurogenesis may be a viable strategy to treat AD patients.
Scientists at OIST Graduate University discovered the neural circuitry that enables juvenile zebra finches to learn songs through social interaction with a tutor. The locus coeruleus-caudomedial nidopallium circuit plays a crucial role in attention and arousal, guiding the bird's focus on the tutor's song.
Researchers found that two new techniques can help reduce needle fear in primary-aged children, including a distraction game and positive memory reframing. The study involved 41 children and showed promising results for broad vaccination programs.
Salk researchers identify neurotensin as a key molecule in the brain's valence assignment process, which associates good or bad feelings with memories. The discovery could lead to a better understanding of why some people retain more negative emotions than positive ones, and may pave the way for new therapeutic targets.
A new study found that individual details of a memory are parsed and stored elsewhere, in the prefrontal cortex. This separation ensures that exposure to any cue is sufficient to activate the prefrontal cortex for recall of the whole memory.
A new imaging technique allows scientists to study mRNA molecules in the brains of living mice, revealing insights into how memories are formed and stored. The research could provide new information about diseases like Alzheimer's and help understand the process of memory generation and retrieval.
A new study published in the Proceedings of the National Academy of Sciences offers fresh insights into infant word learning. Researchers found that infants between 7 and 11 months old learn words by building up memory representations over time, rather than through repeated connections between words and objects.
A novel brain cell type, named theta off-ripples on (TORO), has been discovered in the hippocampus, playing a key role in the formation of memories. TORO neurons are activated during sharp wave ripples and inhibit other brain areas, propagating SWR information broadly in the brain.
Researchers discovered that stress neurotransmitter norepinephrine stimulates a specific population of inhibitory neurons in the amygdala to generate a repetitive bursting pattern of electrical discharges. This leads to the formation of fear memories, which can be difficult to forget due to their association with traumatic experiences.
Research suggests that during deep sleep, neurons representing related items fire in close temporal order, triggering synaptic plasticity and forming strong connections. This process strengthens or creates new relational memories, which can be essential for learning connections between objects or people.
Research published in eNeuro found that physical consequences, such as slipping, can improve motor learning by refining movement responses to mistakes. Participants who experienced a slip improved their ability to adjust steps to new situations, demonstrating better generalization of learned skills.
Researchers identified a key brain circuit in the anterior thalamus that helps us hold information in mind. In a study of mice, enhancing this circuit's activity improved their ability to navigate a maze and reversed memory loss with artificial stimulation.
Scientists at the University of Oxford have developed an 'optomemristor' device that facilitates three-factor learning and emulation of biological computations, making it possible to perform complex machine learning tasks. The device uses both light and electrical signals to interact and consume very little energy.
A new study by MIT researchers confirms that a single memory is stored across many connected brain regions, challenging long-held assumptions. The study used advanced imaging techniques to map memory encoding and recall activity in mice, revealing dozens of brain regions involved in memory storage.
Researchers discovered that the brain formats working memory representations into a shared, line-like shape. This finding suggests that the brain selectively stores relevant information while discarding irrelevant content, and has implications for our understanding of psychiatric and neurologic symptoms such as schizophrenia.
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.
A study found that intact astrocyte networks are essential for neural homeostasis, synaptic plasticity, and spatial cognitive abilities in adult mice. Disrupting these networks impairs spatial learning and memory due to altered neuronal excitability and compromised synaptic transmission.
A NIH-funded study identifies two types of brain cells involved in organizing discrete memories based on when they occurred. The study found that the creation of a new memory occurs when there is a peak in the activity of both boundary and event cells, following a hard boundary.
Researchers at UC San Diego's Kavli Institute for Brain and Mind discovered that fruit flies possess more sophisticated cognitive abilities than previously known. Using virtual reality and real-time brain imaging, they found attention, working memory, and conscious awareness-like capabilities in flies.
A study using an Alzheimer's disease mouse model found that female brains experience a faster decay in information processing ability compared to male mice. This results in weaker memory formation and increased memory loss, contributing to the increased vulnerability of females to Alzheimer's disease.
A new study has discovered that as brains mature, the precise ways in which two key memory regions communicate make us better at forming lasting memories. The findings also suggest how brains learn to multitask with age, with slower oscillations in older participants and faster oscillations in younger ones.