All articles tagged with #cognition
If humans disappeared, Earth would reorganize with certain species gaining advantages. Birds—especially corvids and parrots—show high problem-solving and could rise to prominence, while adaptable mammals like rats or feral cats and dogs might thrive briefly. Primates and large marine mammals face cognitive or physical constraints, and there is no single species poised to fully replace humans as the dominant force on the planet.
A study of 112 engraved ostrich eggshell fragments from southern Africa, dating about 60,000 years ago, shows coherent geometric patterns—grids, right angles, and repeating lines—indicating early Homo sapiens used abstract, visuo-spatial planning and developed a geometric grammar that underpins later symbolic thought.
The article argues that playing music positively affects brain health and cognitive function, debunking old phrenology ideas and indicating that even amateur musicians can gain neural benefits from making music.
Enculturated chimpanzees at a Madrid sanctuary repeatedly preferred crystals over ordinary rocks, inspecting their transparency and shape, and even sorting them into groups. The behavior mirrors perceptual biases that may have guided early human cognition toward recognizing symmetry and Euclidean form, potentially influencing the development of symbolic thought—though the study is small and requires replication in wild apes.
Emerging research and a Nature opinion piece warn that frequent use of large language models may homogenize human writing and reasoning, nudging people toward AI-like styles and even shifting opinions on social issues; some studies indicate pockets of resistance where individuals retain distinctive human writing traits, but the broader concern is a potential loss of stylistic and cognitive diversity in public discourse.
Researchers show that aging gut microbiota produce higher levels of medium-chain fatty acids, triggering peripheral inflammation via GPR84 and weakening vagal gut–brain signaling. This interoceptive dysfunction impairs hippocampal memory in aged mice, with promising interventions—phage targeting of Parabacteroides, GPR84 inhibitors, or boosting vagal activity—able to restore memory.
A systematic review of 32 studies (25,325 participants) links pro-inflammatory cytokines (IL-6, TNF-α, IFN-γ) and intermediate monocytes to slower processing speed, memory issues, and reduced mental flexibility after illness, with anti-inflammatory IL-10 and higher CD4+ T cells offering protection; practical steps to calm inflammation—sleep, stress management, anti-inflammatory diet, regular moderate exercise, and consulting a clinician about inflammatory markers—may help mitigate brain fog after viral infections.
Cognitive science warns that while AI tools can help with tasks, outsourcing thinking risks eroding critical thinking and deeper learning. Cognition relies on encoding, storage, and retrieval, and external aids can either scaffold learning or dull mental effort when used indiscriminately. To stay in control, assess what you offload, cultivate reflective practices, and continue doing hard cognitive work to strengthen your own thinking, using AI as a guided aid rather than a replacement.
The piece examines rising interest in higher creatine doses (around 20–25 g/day) for potential cognitive benefits, especially during sleep loss. While traditional dosing of about 5 g/day remains effective for most, some studies suggest higher doses may boost memory and brain energy in certain groups and blunt cognitive decline after sleep deprivation. For healthy individuals, 5–10 g/day is typically enough, and a cautious 20–25 g dose before a sleepless period might be worth a short trial, though GI upset can occur and more robust research is needed. The author, noting low cost and strong safety, suggests testing the approach over a few weeks to see if it helps in real life.
A Silicon Canals feature argues cognitive longevity comes less from more brain games and more from subtracting autopilot habits: diversify your mental diet, seek intellectual discomfort, surround yourself with varied minds, stay open to surprise and uncertainty, endure small physical challenges, and guard long stretches of unstructured thinking time while maintaining a growth-oriented view of aging.
Constant, personalized soundscapes subtly shape how we think by steering attention and mental effort; lyrics can disrupt language tasks, while familiar, simpler sounds may support repetitive work. The piece offers three principles—match the sound to the task, monitor your own signals to adjust audio, and protect silence—and practical tips to design a listening environment that boosts focus and recovery rather than hijacking thinking, with implications for sleep and daily life.
A Nature study finds SuperAgers (people 80 and older with unusually preserved cognition) generate more new neurons in the hippocampus than other older adults, suggesting that increased neurogenesis may help maintain brain health. The findings point to a unique resilience signature in SuperAgers but are based on post‑mortem, cross‑sectional data, so they show associations rather than proving that boosting neurogenesis prevents dementia. The researchers and clinicians emphasize that lifestyle factors—regular aerobic exercise, a Mediterranean-style diet, lifelong learning, social engagement, and adequate sleep—may support brain renewal and cognitive health.
A study of 58 participants (29 expert birders and 29 novices) found that experts showed higher activity and greater structural density in brain regions responsible for visual processing, attention and working memory when identifying birds, suggesting that long‑term birding may build cognitive reserve and slow age‑related cognitive decline.
Some 80-year-olds retain razor-sharp memory—the so-called 'SuperAgers'—and scientists say they now know why; the piece profiles Ralph Rehbock and places the finding in a broader health roundup that covers vision preservation, rising heart-disease risk in older adults, flu season outlook, and early Alzheimer's prediction tests.
A randomized trial in adults aged 60–80 shows that how probiotics are prepared alters their brain effects: encapsulated bacteria survive digestion longer and enhance memory, attention, and orientation, while non-encapsulated powder more strongly improves mood and reduces anxiety/depression. MRI-based brain connectivity differences between the two forms suggest the delivery method can personalize brain health strategies for aging, targeting cognition or emotional well-being.