All articles tagged with #memory
A Science Signaling study shows acetate, a by-product of metabolism, enhances long-term memory in female mice by promoting histone acetylation and upregulating learning-related genes in the dorsal hippocampus; the effect is minimal in males and requires concurrent learning activity.
New Nature study finds that older adults with healthy cognition, including 'super agers', continue to produce immature neurons in the hippocampus at higher levels than those with cognitive decline, suggesting persistent neurogenesis may support memory; the neuron fraction is tiny (~0.01%), and the small sample sizes mean results should be interpreted cautiously; researchers hope to harness this process to develop therapies that boost neurogenesis in aging and Alzheimer's.
A Nature study finds that super-agers (80+) have roughly twice as many new neurons in the hippocampus as older adults with normal memory, and about 2.5 times more than people with Alzheimer’s, suggesting adult neurogenesis may help explain their exceptional memory and cognitive resilience.
A study of self-described “SuperAgers”—people over 80 with exceptional memory—shows they have more newly formed neurons and a hippocampal environment that supports neurogenesis, along with thicker attention-related brain regions and fewer tau tangles than typical aging. Using multiomic single-cell sequencing across donor brains, researchers found astrocytes and CA1 neurons drive memory retention, suggesting that a combination of genetics and brain-healthy lifestyle supports sustained cognition into advanced age.
Neuroscientist Majid Fotuhi shares six practical brain-boosting habits: start your day with a positive mindset; exercise about four days a week to boost oxygen, BDNF, and hippocampal growth; eat a high-fiber breakfast to support overall body-brain health and gut balance; use brief mind resets (slow breathing and a simple ma-ta-sa-ba finger rhythm) to curb stress and sharpen focus; don’t panic if sleep is interrupted—keep moving and breathing to reset; and practice memorizing three to four new names daily to strengthen memory.
In a study of 62 older adults, more non-REM deep sleep was linked to better memory performance even in people with Alzheimer’s-like brain changes, suggesting deep sleep may buffer against cognitive decline independent of education or activity. The findings highlight sleep quality as a potentially modifiable risk factor, though long-term studies are needed and sleeping pills may not offer the same benefit. Lifestyle tweaks to improve sleep—like avoiding late caffeine, exercising, limiting screens, and a warm pre-bed routine—could help preserve memory as we age.
A UK-Sweden trial with around 40 NHS staff exposed to trauma found that playing a slow version of Tetris while briefly recalling a traumatic memory—an imagery competing task intervention (ICTI)—weakens the vividness of intrusive memories by occupying visuospatial brain areas. Within four weeks, those receiving ICTI had about 10 times fewer flashbacks; at six months, 70% reported no intrusive memories, and PTSD symptoms improved. Led by Emily Holmes, the study is described as a real breakthrough and could be tested in larger groups.
A controlled lab study with 60 undergraduates shows that repeatedly thinking about a topic—such as food—primes the memory system to produce more involuntary memories related to that topic and increases overall memory recall via collateral priming. The findings support the idea that daily rumination shapes memory, though the study focused on a single topic and used a short four-minute lab manipulation.
New findings in The Journal of Neuroscience report that breathing timing can influence memory retrieval. In 18 young adults, EEG and a breath sensor linked brain alpha/beta oscillations and memory reactivation to the respiratory cycle: recalling an image cue was more accurate when the cue appeared during inhalation, with memory processing aligning to exhalation. Stronger breath-brain coupling predicted better memory scores, suggesting respiration acts as a scaffold for episodic retrieval. Authors caution that effects are modest and causality isn’t proven, and results reflect spontaneous breathing rather than deliberate breathing exercises.
Researchers used a brief, targeted OSK gene-therapy to partially reprogram engram neurons—memory traces activated during learning—in aged mice. By activating OSK specifically in hippocampal and prefrontal engrams, they reset aging-related cellular features, restoring both recent and remote memories and improving spatial learning, including in Alzheimer’s-model mice, without disrupting overall brain identity or performing a whole-brain reboot—a proof-of-concept for cognitive rejuvenation.
The author argues that neuroscience, despite vast cross-species data, remains fragmented into species-specific frameworks, hindering the discovery of general brain principles. She calls for making cross-species dialogue a core organizational principle, using differences between species (such as how hippocampal theta appears across rodents and humans) to constrain and refine theory rather than treat them as anomalies. The piece also urges frameworks that link signals across scales, reforms in training and conferences, and funding and publication practices that reward cross-species theory testing rather than single-model optimization.
As people enter midlife, brain changes and stress can make names harder to recall. Smartphones may worsen executive function, but memory can improve by reducing screen time, creating mental friction with devices, and using techniques like listening, repeating, and forming associations when meeting people. Sleep, exercise, and brain-challenging activities help too, all while adopting a forgiving attitude toward forgetfulness.
Insider Gaming reports unverified leaks from leaker KeplerL2 on NeoGAF suggesting the PS6 could use up to 30GB of GDDR7 memory and a portable PlayStation handheld (Project Canis) with as much as 24GB LPDDR5X; the claims are not officially confirmed and a 2027 release window has been floated, so take the details with skepticism.
As AI workloads intensify, memory chips—especially Micron's high-bandwidth memory—are becoming a key growth driver, with demand outpacing GPUs and a TAM expected to grow from about $35B to $100B by 2028. The piece suggests Micron could follow Nvidia's playbook, trading at a modest forward P/E around 12 and offering upside from a fast-expanding memory market, potentially earning the label of 'new Nvidia' in investors' eyes.
Sandisk’s shares surged in January as AI-driven demand boosted NAND prices and investor sentiment. The company posted solid Q2 results (revenue around $3.03 billion and adjusted EPS of $6.20) and guided Q3 revenue of $4.4–$4.8 billion with EPS of $12–$14, helping analysts raise price targets. A persistent memory shortage and rising prices, fueled by AI needs, contributed to a roughly 143% annual gain for Sandisk, with momentum expected to continue into the next quarter.