Articles tagged with Associative Memory
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A University of California, Riverside study found that people's memories for celebrity faces are sharper but less accurate than those for non-celebrity faces. This 'variance-bias tradeoff' suggests that humans prioritize precision over accuracy to accommodate the natural variability in face recognition.
Researchers have found that honeybees use linear landscape elements, such as irrigation channels, to guide their search flights when looking for their hive in new areas. The bees retain a navigational memory of their home area based on these elements, which they generalize to the new area to find their way home.
A tiny worm called C. elegans is enabling scientists to explore the emerging theory that Parkinson’s disease starts in the gut, where a sticky protein causes neurons to die. The worms have a digestive tract and neurotransmitters similar to humans, making them a great model for studying cognitive problems associated with Parkinson's.
A long-term study found that regular leisure time physical activity at any age is associated with better brain function in later life. Maintaining an exercise routine throughout adulthood was particularly beneficial for preserving mental acuity and memory. The study, which included over 1,400 participants, showed that being physically ...
The work group reframed what is clinically meaningful to slow Alzheimer's disease progression, including the need for combination therapies and realistic expectations of benefits and risks. Slowing brain deterioration by four to six months in early stages may preserve function, leading to meaningful outcomes for patients and families.
A decade-long study found that a healthy lifestyle, including a healthy diet, regular exercise, and cognitive activity, slows memory decline in older adults. Participants with the APOE gene, associated with Alzheimer's disease, also experienced slower memory loss.
Columbia Engineering neuroscientists identified a specific neural mechanism in the human brain that enhances memory for emotional events. High-frequency brain waves in the amygdala and hippocampus are critical to this process, and disruptions can impair memory specifically for emotional stimuli.
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 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...
A Finnish study found that cumulative adverse psychosocial factors in childhood are associated with poorer learning and memory in midlife. Specifically, poor self-regulatory behavior and social adjustment in childhood linked to poorer learning ability and memory decades later.
A new therapy combining Imagery Rehearsal Therapy with Targeted Memory Reactivation has been shown to significantly reduce nightmare frequency and increase positive dreams in patients. The treatment, which involves associating a major piano chord with positive scenarios, resulted in lasting benefits even three months after the experiment.
A new study by University of York researchers found that playing sound cues during sleep can be used to help people forget specific memories. The technique, which was previously used to boost memories, has been shown to induce selective forgetting in overlapping memories.
Scientists at UC San Francisco's Neuroscape Center have developed video game interventions that improve key aspects of cognition in aging adults, including short-term memory, attention and long-term memory. The games use adaptive closed-loop algorithms to challenge players, keeping them engaged while adapting difficulty levels.
A new study proposes reducing toxic proteins in the blood as a potential therapy for Alzheimer's disease. By doing so, it aims to improve memory and learning capacity, as well as correct cognitive impairments. The next step is to test this treatment at a clinical level.
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 new study identified a specific enzyme, PDE11A, responsible for memory loss in social interactions with age. By manipulating this enzyme, researchers may develop therapies to prevent or reverse age-related cognitive decline.
The new AI system uses associative learning to detect similarities in datasets, reducing processing time and computational cost. By leveraging optical parallel processing and light signals, the system can identify patterns and associations more efficiently than conventional machine learning algorithms.
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 published in PLOS Computational Biology suggests that proactively avoiding associations can help prevent the repetitive looping of unwanted thoughts. Researchers found that most people use reactive control, which can strengthen unwanted thoughts, but also discovered that preemptive control can partially mitigate this effect.
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.
A systematic review of 71 studies finds paranormal beliefs associated with differences in cognitive function, particularly intuitive thinking style. Methodological quality has improved over time, but areas for improvement remain, including discussion of limitations and generalizability to the population.
Researchers at Tokyo University of Science identify brain regions and signaling pathways involved in fear extinction via delta receptor activation. The study suggests a potential therapeutic agent for post-traumatic stress disorders by suppressing fearful memories.
Researchers found a strong association between subjective memory complaints and larger white matter hyperintensity volumes, indicating abnormal brain structure. The study also showed faster cognitive decline among those with subjective memory complaints, highlighting their importance as an early sign of cognitive impairment.
A new study found that napping can positively affect preschool children's learning of letter-sound mappings and transfer this knowledge to reading unfamiliar words. The research suggests that naps may facilitate the acquisition and application of these fundamental literacy skills.
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.
The study reveals that seven indicators affect people's decisions, including ornament, material, and line, which influence heritage perception. A model can predict the heritage potential of a building by ordinary people.
New research by Northwestern University found that reactivating memories during sleep significantly improves face-name learning. The study also discovered that uninterrupted deep sleep is crucial for this improvement.
A new study by Ritsumeikan University reveals that whole-body dynamic balance training increases brain connectivity and improves motor learning. The research found significant changes in brain activity associated with offline learning, opening up new avenues for studying neural networks during natural tasks.
A team of psychological scientists and criminologists recommend testing eyewitness memory only once to prevent contaminated memories from convicting innocent people. The first identification is the most reliable test, which can avoid further contamination and ensure justice.
A UCI-led team has discovered specific brain cells, called fan cells, that compute and represent the association between new unrelated items. These cells are controlled by dopamine and are required for successful acquisition of new associative memories.
Researchers found that Maya rulers altered their cities' structures and alignments to reflect their own desires and authority. Many temples were built on top of existing ones or abandoned altogether, shifting the focus from community ritual to ruler-centric politics.
Chronic light exposure disrupts circadian rhythms in rats, leading to memory deficits and amyloid β accumulation similar to Alzheimer's disease. Fluoxetine treatment prevents these effects, suggesting a potential therapeutic strategy.
Texas A&M researchers have developed a method to indirectly retrieve and weaken fear memories, which could lead to more effective therapy for treating trauma. By reactivating traumatic memories through conditioning procedures, scientists can make them vulnerable to disruption.
Researchers found that sleep helps connect fear memories to sensory events, allowing accurate associations to be made. Without sleep, brain processing of fear becomes impaired, potentially contributing to anxiety and PTSD.
A new study by Hayden Noel found that emotionally arousing advertisements can have a negative effect on immediate memory but a positive effect on delayed memory if the level of emotional arousal is congruent with the ad's claims. The research has practical implications for advertisers seeking to develop effective message strategies.
Thicker electrodes with greater surface roughness improve resistance switching memory cell characteristics. The study found that such electrodes reduce forming and switching voltages, increase endurance to 50 million cycles, and enhance device performance.
A new study found that individuals with higher levels of positive affect had less steep memory decline over a nearly decade-long period. Positive emotions are associated with healthier aging, contradicting the notion that memories fade with age.
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.
The study found that the neurons in the inner prefrontal cortex respond more to loss than gain, while the hippocampus is affected by post-loss activity and anxiety. This suggests a close relationship between memory processes and decision-making in stressful situations.
Researchers at Tufts University found that warning witnesses about the threat of misinformation can significantly reduce its negative impact on memory. The study revealed that warnings can protect memory from misleading information by influencing reconstructive processes during memory retrieval.
Researchers at Rice University and UTHealth have discovered how a chameleon-like protein, CPEB3, interacts with actin filaments in neurons. This interaction enables the protein to adapt its binding sites to either SUMO or actin, allowing it to form long-lived aggregates that store memories.
Research reveals that lower-income families experience reduced memory and language abilities in children due to smaller anterior hippocampus development. The study also suggests that higher income thresholds beyond $75,000 may not provide additional cognitive benefits.
Researchers at the University of Southern California have created a novel memory device that exceeds previous performance while offering promising prospects for integration with silicon electronics. The device uses asymmetric metal and semi-metallic graphene materials to achieve record-breaking speed and efficiency.
Researchers found that brains use common words like 'pig' and 'tank' more often when recalling memories, suggesting a neural network connection. The study used memory tests, brain wave recordings, and surveys to support the idea that brains search for memories like search engines track information online.
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.
A study of 524 adults aged 65+ found that openness was linked to a 6% reduced risk of motoric cognitive risk (MCR), while neuroticism increased the risk of non-amnestic MCI. Personality traits played an independent role in pre-dementia syndromes, emphasizing their importance in dementia risk assessment.
A new study identifies lactate, a molecule produced by a common gut microbe, as a key memory-boosting molecular messenger. The researchers found that mice fed specific probiotics experienced improved memory, with increased levels of gamma-aminobutyric acid (GABA) in their brains.
A new tool measures quality of life in people with dementia by assessing five key domains: physical health, mood, memory, living situation, and ability to do fun activities. The tool reveals that living situation is the most important contributor to quality of life, followed by the ability to engage in fun activities.
A new study shows that people with high blood pressure and reverse dipping may have small areas in the brain damaged from vascular disease, leading to memory problems. Those with high blood pressure and reverse dipping also had lower scores on a memory test, with average scores of about 33 compared to 40 for those without these conditi...
Researchers identified genes ABTB1 and GRB10 as influential in nutrient-sensing pathways, associated with performance on memory tasks. Lifestyle changes, such as diet and exercise, can delay memory decline, but genetic variations affect their effectiveness.
A Korea Brain Research Institute study found that the posterior parietal cortex plays a role in fear renewal in novel contexts. This discovery may lead to the development of new treatments for post-traumatic stress disorder (PTSD) and fear-related disorders.
Researchers demonstrate that fear memory involves strengthening neural pathways between the hippocampus and amygdala, which can be erased by weakening these connections. This discovery provides potential therapeutic strategies to suppress maladaptive fear memories in post-traumatic stress disorder patients.
A new study published in JAMA Network Open found that declines in both memory and gait speed are associated with an increased risk of dementia in adults 60 and older. The observational meta-analysis included six studies with over 8,700 participants from the US and Europe.
A study of 139,000 older Australians found strong links between certain food groups, such as fruit, vegetables, and protein-rich foods, and reduced memory loss and comorbid heart disease. Age-specific dietary guidelines may be necessary to prevent cognitive impairment in older populations.
A brain imaging study found that PTSD patients have a deficiency in mechanisms that suppress and regulate memory activity, particularly in the hippocampus. The study suggests that these dysfunctioning systems contribute to the persistence of intrusive memories.
A study by Kloft et al. found that cannabis use increases susceptibility to false memories and misinformation in mock crime scenarios. This research has significant implications for the questioning of cannabis-intoxicated eyewitnesses and suspects during investigative interviews.
Researchers at Kessler Foundation identified specific brain regions associated with memory rehabilitation using the modified Story Memory Technique. Participants showed decreased brain activity in language network, default mode network, and executive control network, leading to improved learning and memory outcomes.
A new study by Cedars-Sinai researchers found that abnormal electrical pulses from specific brain cells cause temporary memory disruptions in epilepsy patients. The study's findings could lead to better treatments for cognitive impairment in epilepsy patients, with the potential to improve their quality of life.
Researchers identified deficits in prospective memory as factors affecting performance of everyday life activities in individuals with multiple sclerosis. Time-based tasks showed poorer performance compared to event-based tasks, and were associated with executive function deficits and lower motor scores.