Active and dormant cells within cancer tumors contribute to complex and challenging chemotherapy treatments.
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Simple biological age score flags higher cognitive decline risk in older adults
A study of 4,818 middle-aged and older Chinese adults found that higher light BioAge was associated with greater risks of cognitive impairment, episodic memory decline, and reduced mental intactness. The simple measure, based on age, creatinine, glucose, and CRP, added modest predictive information but requires further validation before clinical use.
Brain activity reveals two stages of visual processing before conscious perception
Seeing feels immediate; we open our eyes and the world seems to appear as a continuous stream. But some visual illusions show that events occurring later can change how we perceive what happened earlier, suggesting that the brain may collect and combine information for a short time before producing the experience that reaches awareness.
This effect is known as “postdiction.” Here’s an example: Two colored dots appear briefly in different places, but people see only a single moving dot that changes color along the way. This means that the second dot must influence how the first is perceived, a typical example of postdiction.
A Photonic Crystal in Time
Metamaterial-based device working at terahertz frequencies could be turned into a new type of laser.
