Researchers propose that Alzheimer's disease progresses through distinct molecular and cellular phases marked by biological thresholds, rather than a simple straight-line path from amyloid buildup to Tau pathology to neurodegeneration. At these thresholds, cells lose homeostatic balance and shift behavior, with these altered states spreading unevenly across brain tissue and eventually reaching regions critical to cognition. A key threshold identified is when amyloid triggers Tau phosphorylation, marking the transition from amyloid-driven tissue states to ones dominated by neuronal stress responses.
nature.com
· 2026-09-16
A new brain-computer interface has for the first time simultaneously decoded a paralyzed user's intended speech and movement, converting brain signals into on-screen text while animating a personalized avatar within seconds, according to a Nature Neuroscience study. Separately, a review published in Psychological Medicine finds that reading for pleasure correlates with structural brain changes, better mental health, and lower risk of cognitive decline, with benefits strongest when reading starts young and is enjoyable rather than obligatory.
nature.com
· 2026-09-15
An eight-year study published in Neurology found that adults consuming roughly the amount of artificial sweetener contained in one daily diet soda experienced memory and mental sharpness decline 62 percent faster than those consuming far smaller amounts. The research tracked participants over time to compare cognitive changes based on sweetener consumption levels.
fastcompany.com
· 2026-08-28
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