Tag

Ucl

All articles tagged with #ucl

health-and-science1 year ago

"Google Earth Heart Video Explores Two Unique Organs"

Scientists have created the first-ever detailed 3D atlas of the human heart using advanced imaging technology, allowing unprecedented views of both healthy and diseased hearts. This breakthrough, likened to a "Google Earth" for the heart, aims to enhance understanding and treatment of cardiovascular diseases by providing detailed anatomical insights that were previously unattainable.

neuroscience1 year ago

"Age-Related Changes in Color Perception: Insights from Brain Studies"

A study led by UCL researchers found that healthy older adults perceive colors differently compared to younger individuals, with older people's pupils constricting less in response to color chroma, particularly for green and magenta hues. The findings challenge the belief that color perception remains constant throughout life and suggest age-related shifts in color preferences. This decline in color sensitivity with age may have implications for understanding aging and dementia, as well as for adapting fashion, décor, and other color spaces for older individuals.

neuroscience2 years ago

"Generative AI Decodes Human Memory and Imagination"

A new study uses generative AI to simulate how the human brain processes memories for learning, imagination, and planning, shedding light on the interaction between the hippocampus and neocortex. The research demonstrates how the neocortex forms efficient conceptual representations from experiences, enabling the brain to recreate past events and imagine new scenarios. This provides insights into memory's role in survival, predicting future events, and understanding memory distortions, offering a deeper understanding of how memories enable us to learn, relive experiences, and construct new experiences for imagination and planning.

science2 years ago

"First-Ever Experiment to Detect Quantum Behavior in Large Masses"

A team of scientists from UCL, the University of Southampton, and the Bose Institute in Kolkata, India, has proposed an experiment to test whether large masses have a quantum nature, potentially extending the domain of quantum mechanics. The experiment, outlined in a paper published in Physical Review Letters, involves shining light on a pendulum-like object to observe its motion and determine if the act of observation changes its path, a property inherent to quantum mechanics. The proposed experiment could be implemented using nanocrystals or even LIGO mirrors, potentially challenging the notion that quantum mechanics only applies at small scales.

science2 years ago

"Revolutionary Theory Unifies Einstein's Gravity and Quantum Mechanics"

Physicists at UCL have proposed a new theory, called a "postquantum theory of classical gravity," that challenges the prevailing assumption that spacetime must be quantized to reconcile quantum mechanics with Einstein's theory of general relativity. Instead, the theory modifies quantum theory itself and predicts random and violent fluctuations in spacetime that are larger than those predicted by quantum theory. The theory has been stress-tested and proposes an experiment to measure the weight of a mass precisely to test its predictions. The outcome of the experiment could determine the quantum vs. classical nature of spacetime.