Consistency and emotional engagement can improve the formation of memories

Memories are formed through attention, repetition, and emotional significance

Our brains create memories by taking in sensory input, filtering it through short-term memory, and storing it in long-term memory. Emotional events are more likely to become vivid, lasting memories because they activate stronger neural connections.

Retrieval cues trigger memories and emotions from long-term storage

Retrieval cues can activate specific cells in a neural network, creating a cascade of neurons that collectively make up a memory. Specific cues help regulate emotions during stress by activating positive memories.

How dreams affect your memory

In 1999, scientists conducted a study in which participants were asked to recall images flashed before them for milliseconds. They found that participants who slept before recalling the information performed better than those who had been asked to recall the same information that same day. This was some of the earliest convincing evidence of how crucial sleep is for learning and memory, findings that current research continues to strengthen.

The brain consolidates memories during sleep

During sleep, the brain appears to process memories from the day and encode them into long-term storage. At the same time, the brain prunes old memories out of the brain that are no longer useful. Understanding this process also sheds light a various neurodegenerative diseases.

Age, stress, and neurological disorders can prevent memory formation and recall

Neurons transmit signals between one another at sites called synapses. Repeated interactions at these sites improve the efficiency of signal transmissions, making memories involving sensory data associated with those neurons easier to recall. Biochemical factors impacting these synaptic interactions affect memory quality.

Sharp wave ripples in the brain tag experiences for long-term memory storage

These ripples were known to quickly replay neuronal sequences during sleep for consolidation. While awake, they help the brain prioritize memories to remember, and their disruption can impair memory formation.

Researchers believe the brain consolidates memories, processes emotions, and plans for the future during dream states

Playing music enhances the creation, storage, and retrieval of memories

Scans of the brains of individuals who play instruments have shown enhanced connectivity between multiple brain regions—visual, auditory, and motor cortices—and the corpus callosum, which connects the two brain hemispheres. These complex connections are strengthened through practice and then used in other activities that involve both logic and creativity. The brains of musicians also appear to give experiences multiple types of memory tags, such as audio, emotional, and conceptual, improving their processing.

The hippocampus, a structure in the brain, plays a crucial role in memory formation

The seahorse-shaped structure transfers short-term memories to long-term storage during sleep. It is located in the temporal lobes, above each ear, and aids in spatial navigation and remembering directions.

Exercise releases chemicals that enhance cognitive function

Neurotransmitters like dopamine, serotonin, and norepinephrine, along with increased brain-derived neurotrophic factor levels, enhance a wide range of brain functions. New research demonstrates a direct link between movement and numerous cognitive benefits, including memory, learning, and stress resilience.

Researchers use the brain's ability to edit memories to explore memory deletion

Scientists have successfully implanted false memories in mice after studying how the editing process works in the brain. Beyond potentially deleting memories in those with PTSD, upcoming research may allow clinicians to forecast the onset of neurodegenerative diseases.

Long-term memory formation may not need short-term memory

New research shows that long-term memories can still develop even when short-term memory formation is blocked, suggesting the brain uses separate pathways for short- and long-term memory. This discovery could help scientists open new avenues for treating memory loss in diseases like Alzheimer’s.

The "reminiscence bump" causes memories from adolescence to last

Research shows that the "reminiscence bump" phenomenon, which applies to memories formed between the ages of 10 and 30, contributes to songs from those ages triggering the most intense nostalgia. This may be due to biological and hormonal changes enhancing memory effectiveness during adolescence.

Engrams are the specific pattern of brain cells that make up a memory

Memory isn’t stored in your brain in a neat little package but is instead spread across a pattern of cells in different regions. Understanding this process could lead to better treatments for conditions like Alzheimer’s or PTSD.

Studies suggest when you sleep is as important as how much you get, and syncing with your circadian rhythms may lead to less fatigue and improved long-term health outcomes

Smell is a robust memory cue for individuals with Alzheimer's disease

Odor is more effective than both visual and verbal cues for triggering autobiographical recall in Alzheimer's disease, according to 2021 research.

Sleep research indicates dogs likely dream about their toys, food, and owners

According to the continuity hypothesis, dreams are built from waking life. This likely applies to pets. Repetitive barking, whining, or running movements while asleep indicate a dog is dreaming.

How does muscle memory work?

Muscle memory is less about remembering how to ride a bike and more about what's happening in muscle cells. Increasing the cells' size, say by working out, leads to an increase in nuclei, which increases the production of mitochondria. When your fitness regimen falls to the wayside and you decide to re-enter the gym, these gains-based nuclei are already present to quicken muscle cells' adaptation to exercise.

The doorway effect is when people forget their task when entering a new space

The "why did I come in here?" feeling after walking into a room comes from the brain creating event boundaries to organize memories. Mentally revisiting a previous room can help recall tasks and reverse memory loss. (Some readers may experience a paywall.)

How to remember names

Journalist Lisa Kanarek sought to become a “super-recognizer,” someone with exceptional face recognition abilities who never forgot a name. She enlisted the help of a neurosurgeon and a world record holder in memory. The experts suggested a few tips and tricks to connect names and faces and erase the need to say, "Hey, you!" again.

Listen to storytellers explain the legacy of memories shared between children and their mothers

In this podcast, people describe the strength of certain memories, what events stay with them, and when and why grief washes over them. One describes the challenging task of selling her mother's cemetery plots; another, keeping a promise to her son to learn to swim; and in the third, a son discusses the strength of familiar food smells.

Journaling can improve mental wellbeing and promote positive interactions

Described as having therapy with someone who knows you well, documenting one's thoughts and feelings aids in information processing and can reveal personal issues. Methods include bullet journaling and gratitude, which a 2024 study linked to a longer lifespan.

The emotional regression that happens when we visit home

Despite how mature we might like to think we are, returning home for the holidays often results in reverting to our moodier, angstier childhood selves. This story in the conversation dives into the root of this phenomenon, which can largely be explained by attachment theory. Read along to understand how your past experiences and attachment style can influence your current behaviors and for advice on how to cope with regression.

Forcing a smile can actually make you feel slightly better

Activating your smile muscles—in this case, with electrical muscle stimulation that forces the corners of the mouth upward—makes people feel more positive, according to recent research. It won't cure depression, but it can have a small effect. Earlier faux smile research using different nonelectrical techniques had similar results, collectively suggesting that a smile may help brighten your day—even though the mechanisms for the happier result remain unclear.

Shorter, more frequent touches are better than longer, rarer ones

That's according to a 2024 meta-analysis of 137 studies on touch. It found that as long as the touch is consensual, the identity of the toucher mattered little for adults, and there was even a benefit to receiving "touch" from objects like weighted blankets or robots. For newborns, however, the identity of the toucher did matter, and the greatest benefit came from parental touch.

'It's the repetition of affirmations that leads to belief. And once that belief becomes a deep conviction, things begin to happen.'

- Legendary boxer Muhammad Ali (1942–2016)

Explore a series of bedtime exercises to improve sleep

Low-impact, mindful movements can potentially help the body and mind relax before sleeping. Such exercises could be a helpful complement to regular exercise during the day.

Recent research found that the brain doesn't seem to massively rewire following amputation—upending earlier beliefs about the cause of phantom limb pain.

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

Alzheimer's can lead to brain shrinkage, with an average of around 2% of volume reduction per year

In recent years a child anxiety expert has created and tested a novel phobia and anxiety treatment approach for children, focused on changing how parents respond to the fears.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

Indefinite cloning of some endangered species may not sustain their longevity because cloning success rates decrease as genetic mutations accumulate.

Watch how algorithms can be designed to train themselves and self-improve without human input, to the point where the optimized code is too complex for programmers to understand.

To reduce wrinkles in clothing, research recommends gentle wash cycles with more water and tumble drying with smaller loads and longer times.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Scientists can determine Earth's past climate conditions by analyzing air trapped in microscopic bubbles within ice cores—columns of compressed snow layers that build up over hundreds of thousands of years.

The Ramones' 'Pet Sematary,' the theme song for the Stephen King novel of the same name, was written while the band was admiring the writer's collection of horror memorabilia.

Radioactive elements can introduce software errors because the ionizing radiation they produce can detach electrons from atoms, and computer code relies on the distribution of electrons.

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

Salvador Dalí believed he was his own dead brother, who had died nine months before he was born

Apollo astronauts left items in the moon's 'toss zone,' including golf balls, family photos, and bags of human waste, to make room for lunar rocks.

SpongeBob exemplifies Aristotle's philosophy for living well because he understands that happiness doesn't come from external factors like money, recognition, or power.

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

Massive 3D printers have been used to build homes by stacking layers of 'concrete toothpaste,' a fire-resistant material that effectively insulates against outside noise.

The first steps to rebuilding your credit score include getting to know exactly what's on your credit report and figuring out how far you are from the '700 club,' or 'good score' range.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

Fireworks make a loud booming sound after exploding due to air expanding faster than the speed of sound.

Urushiol, the oily toxin in poison ivy, can remain allergenic on clothing for years.