Articles tagged with Episodic Memory
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A new computational model reveals how place cells in the hippocampus can store episodic memories, including those of events without a spatial component. The model proposes that grid cells form a scaffold that anchors memories and drives recall by connecting to sensory cortex.
A new study suggests that exercise can improve cognitive performance for up to 24 hours after a single day of moderate to vigorous physical activity. The study found that participants who spent more time being active and had better sleep quality performed better in memory tests the next day.
A new study found that HDL particle quality declines over time in women after menopause, increasing risk of episodic memory loss. Women with smaller, more functional HDL particles are less likely to experience cognitive decline.
A study published in Science Advances found that the quality of synapses, specifically dendritic spine head diameter, predicts episodic memory performance in older adults. Researchers suggest targeting pathways that maintain spine head diameter or synaptic strength may yield greater therapeutic benefits for Alzheimer's disease prevention.
Viji Santhakumar, a UCR professor, has been awarded a $3.5 million NIH grant to study brain circuit function and its impact on memory formation and cognitive deficits in diseases like epilepsy and Alzheimer's disease.
Researchers found that blue and great tits possess 'episodic-like' memory, recalling past experiences such as food availability, location, and timing. This ability may help the birds cope with environmental stress and fluctuation influenced by climate change.
Researchers tracked free-ranging Egyptian fruit bats and found they possess high cognitive abilities, including episodic memory, mental time travel, and delayed gratification. The study revealed that older bats can estimate time passed since their last visit to a tree and avoid those with stopped bearing fruit.
A study published in Nature Communications reveals that the hippocampus is activated differently depending on whether goals are near-term or distant, suggesting it plays a key role in prioritization. The findings have significant implications for understanding psychiatric disorders like depression.
A study published in PLOS ONE found that Eurasian jays can recall visual characteristics of cups with unique features after a 10-minute delay, demonstrating episodic-like memory. This ability may aid the birds in finding food stores and could be explored further.
A meta-analysis of 5,000 participants found that daily multivitamins showed benefits for memory and global cognition. The study suggests that taking a daily multivitamin can help prevent memory loss and slow down cognitive aging by the equivalent of two years compared to placebo.
Despite improved living conditions, sex differences in personality, verbal skills, and negative emotions are larger in countries with higher standards of living. Women tend to benefit more from these improvements, exhibiting greater altruism and cooperative ability, while men show better cognitive skills but at a smaller advantage.
A new study by McGill researchers explores the power of imagination in evoking empathy, showing that vividly imagining someone else's problems motivates us to lend a helping hand. The study finds that personal distress is a more prominent form of empathy, which can actually be a catalyst for taking action.
A study by the University of Ottawa found that various long-term memory types, such as semantic and episodic memory, rely on the same brain network to varying degrees. The research used neuroimaging techniques to compare brain activity across different memory conditions.
Researchers have identified a shared network of brain regions involved in various types of long-term memory, including general semantic, personal semantic, and episodic memory. The study found that these memory types rely on activating the same areas of the brain at differing magnitudes.
The Wang Lab at MPFI will investigate neural circuits underlying Alzheimer's disease with a new $1.038M NIH grant. The research aims to shed light on how the brain forms and maintains memories, particularly in patients with declining cholinergic inputs.
A new study from UC Davis Health found that volunteering in late life is associated with better executive function and episodic memory. Those who volunteered several times per week had the highest levels of executive function, potentially serving as a simple intervention against Alzheimer's disease and associated dementias.
Researchers aim to understand how estrogen levels and menopausal status interact with memory-related brain function and behavioral outcomes in women aged 35-80. The study could help identify physiological factors underlying sex differences in Alzheimer's incidence and improve early disease detection and preventive therapies.
A study by Florida Atlantic University and CINVESTAV found that long-term running maintains the connectivity of adult-born hippocampal neurons, which contribute to memory function during aging. Exercise may prevent or delay age-related memory decline by increasing the survival and modifying the network of these neurons.
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 at the University of Waterloo have developed a robot system that uses artificial intelligence to track objects, including medication and glasses. This technology has shown high accuracy in locating everyday items, potentially improving the quality of life for individuals with dementia.
Consciousness in animals may be more nuanced than previously thought. Researchers at Ruhr-University Bochum suggest ten dimensions of consciousness that cannot be ranked. Strong indicators include complex perception and episodic memory, while weak indicators are simple sensory processing and categorization abilities.
A recent study published in Psychological Science suggests that people use event boundaries as 'stepping stones' to scan their memories when recalling specific facts or information. By analyzing participants' responses to questions about film events, researchers found that individuals can scan an entire event in just 1 second and skip ...
A study by Plamen Nikolov and Shahadath Hossain found that access to retirement plans can lead to significant adverse effects on cognitive functioning among the elderly. The researchers discovered that pension benefits and retirement resulted in reduced cognitive performance, particularly among females.
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 study from Dartmouth College found that specific intensities of exercise over a long period are associated with different aspects of memory and mental health. Participants who exercised at moderate intensities performed better on episodic memory tasks, while those who exercised at high intensities did better on spatial memory tasks.
A randomized controlled trial found that consuming cranberries for 12 weeks improved participants' memory of everyday events and neural functioning. The study also showed a significant decrease in LDL or 'bad' cholesterol levels, contributing to improved vascular health and brain perfusion.
Cedars-Sinai researchers identified two types of brain cells that divide continuous human experience into distinct segments, enabling the brain to recall memories. The discovery provides new hope for treatments of memory disorders like dementia and Alzheimer's disease.
A PLOS study found that low-frequency magnetic stimulation can improve episodic memory by reducing beta-waves in the brain. The study, led by Mircea van der Plas and Simon Hanslmayr, used slow rTMS over the left prefrontal cortex to enhance verbal memory formation.
A two-hour glucose tolerance test is linked to cognitive decline in a 10-year follow-up study. Higher blood glucose levels measured in the test were associated with weaker performance in a memory test and a greater decline in results.
Researchers from Ruhr-University Bochum explain how people construct memories of important events, influenced by positive or negative feelings, narrative self-image, and descriptive language. This process shapes memories to protect the positive self and mitigate negative memories that don't fit the self-image.
Researchers found that cuttlefish can remember specific events, including what they ate and where it happened, up to their last few days of life. Unlike humans, who lose this ability with age, cuttlefish's episodic-like memory is preserved until the end of their lives.
Research found human hippocampal neurons fire during specific moments in time, encoding information about the time and order of events. These neurons contribute to episodic memories by tracking time and sequence of events.
A new brain imaging study reveals that infants use the hippocampus to recognize patterns, despite limited episodic memory, with the brain region doubling in size between 2-4 years old
Researchers discovered how our brains use high frequency brain waves to compare past and present experiences, setting expectations for the future. The study used epilepsy patients and found that the brain replays neural activity patterns when recognizing changes.
An fMRI study found that older adults' brain activity while experiencing event boundaries is similar to younger adults', but with some differences. The study suggests that older adults may process events in different ways, focusing on broader contextual information rather than specific details.
Disruption of hippocampal activity with TMS impairs future imagining and creative thinking abilities in young adults. Reduced activity in the hippocampus is linked to decreased future imagining and divergent thinking.
Researchers found that individuals with higher cardiovascular risk burdens experienced faster declines in episodic memory and working memory, as well as smaller hippocampal volumes. Maintaining heart health may be key to preventing cognitive decline, according to the study's findings.
Researchers analyzed brain cell firing patterns while patients learned word pairs, discovering unique sequences associated with learning and a similar replay pattern before successful recall. The study suggests that brains use distinct neural firing patterns to store memories and then replay them when recalling past experiences.
A study on rats and mice found that early life experiences impact the brain's biological and functional development, leading to unique changes in memory formation. The researchers discovered that specific experiences during infancy mature learning and memory abilities, while others do not.
Neuroscientists at University of Birmingham demonstrate directional coupling between neocortex and hippocampus during episodic memory formation and retrieval. The study reveals a bidirectional flow of information, with distinct gamma frequencies contributing to encoding and retrieval.
The study reveals that engram sub-ensembles represent distinct pieces of information, which are then orchestrated to constitute an entire memory. During post-learning sleep, replayed sub-ensembles are more likely to be reactivated during retrieval, indicating a key role in memory consolidation.
Daily intake of Montmorency tart cherry juice improved memory scores among adults aged 65-73, with notable reductions in movement time and errors during visual and spatial working memory tasks. Compliance was high, but larger studies are warranted to confirm findings.
A team of researchers identified a link between ghrelin and episodic memory, finding that blocking ghrelin signaling impaired rats' ability to remember specific events. The study also found that vagal ghrelin signaling influences feeding behavior, with animals eating more frequently but consuming smaller amounts at each meal.
Research from the Wisconsin Longitudinal Study found that positive mother-child interactions during early life predicted higher education, less decline in episodic memory, and greater marital satisfaction. These findings suggest a long-lasting impact of early life relationships on later cognitive development.
Brown University researchers discovered that unexpectedly good outcomes enhance the memory of specific events, which may have implications for treating individuals with depression. The study found that participants were better at remembering specific images from rounds where they had a high likelihood of winning.
Researchers found that simultaneous ripple activity occurred in key parts of the brains of epilepsy patients before they recalled memories. The team also discovered that coordinated ripple synchronization triggered electrical activity patterns seen during learning and was associated with correct memory recall.
A study published in Nature Human Behaviour found that people access memories 'forward' by recalling older information first and skipping episodic blocks. The researchers also discovered that memory replay does not occur at a constant speed but changes flexibly during recall.
A study found that using two memory tests to assess episodic memory improves the accuracy of diagnosing mild cognitive impairment due to Alzheimer's disease. Those who performed poorly in both tests showed faster brain atrophy, highlighting the importance of comprehensive neuropsychological assessment.
Researchers found that 3-year-old children could retroactively combine memories with new information to spot false beliefs, a skill developing episodic memory. In contrast, 18-month-olds were unable to do so but could identify false beliefs in others, suggesting the role of episodic memory in monitoring other's belief states
Studies using 64 and 28 participants revealed that recalling a target memory enhances retention of both the target and a linked object, with neural activity reinstated in parietal lobe regions. This suggests that retrieval may be an efficient method for memory enhancement.
Researchers at DeepMind and universities reveal a novel brain mechanism that links episodic memories to solve problems. The discovery suggests the hippocampus recirculates activation back into itself, triggering related memory retrieval.
Young people who received radiation therapy for pediatric brain tumors struggle to create new memories, but retain those formed before treatment. Reduced neurogenesis in the hippocampus may contribute to this effect.
A recent study published in Springer's Archives of Sexual Behavior suggests that older adults who engage in regular intimate activities and emotional closeness do not experience a slower rate of cognitive decline compared to those who are less active. However, this relationship is only observed on short-term memory tests, not over time.
Researchers at Indiana University found that rats can replay past events from memory using episodic memory replay. The study confirms the ability of animals to recall specific events and their order, which is essential for making sense of scenarios. This breakthrough could lead to more effective treatments for Alzheimer's disease.
Researchers successfully implemented a prosthetic system that utilizes individual brain cell patterns to enhance memory encoding and recall. In a pilot study, participants showed significant improvements in episodic memory performance, with the most notable gain observed when stimulated with correct-answer codes.
A study published in Nature Communications used virtual reality to train subjects, then showed that different areas of the hippocampus are activated for different types of memories. The researchers found that the hippocampus is involved in linking similar experiences and encoding time and space information.
Adolescents with OCD experience widespread learning and memory problems, affecting daily functioning and school performance. Researchers found impaired cognitive flexibility and goal-directed control, highlighting the need for structured environments to support their development.
Scientists at UC San Diego report that distinct, sparse sets of hippocampal neurons encode episodic memories, recollections of past events. The findings provide significant insights into the mechanisms of memory and have implications for health-related reasons, including Alzheimer's disease.
Researchers found that variability in the medial temporal lobe's subfields is associated with differences in associative memory performance among older adults. The study's findings could help unravel age-related memory impairment by highlighting individual differences in brain structure and function.
Researchers at MIT's CSAIL developed ComText, a system that allows robots to understand contextual commands, enabling them to perform complex tasks. With this technology, Baxter, a two-armed humanoid robot, achieved success in executing commands with a 90% accuracy rate.