Category: Biology Philosophy
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Knowing thy self…
Interoception is the awareness of our physiological states; it’s how animals and humans know they’re hungry or thirsty, and how they know when they’ve had enough to eat or drink. But precisely how the brain estimates the state of the body and reacts to it remains unclear. In a paper published in the journal Neuron, […]
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Conscious. Unconscious!
What does this mean for the EEG’s ability to reflect consciousness? “The study does support the possibility that certain EEG features might not always accurately capture the level of consciousness in surgical patients,” says senior author George A. Mashour, M.D., Ph.D., chair of the U-M Department of Anesthesiology. However, “EEG likely does have value in […]
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Drawing. Seeing.
Drawing an object and naming it engages the brain in similar ways, according to research recently published in JNeurosci. The finding demonstrates the importance of the visual processing system for producing drawings of an object. In a study by Fan et al., healthy adults performed two tasks while the researchers recorded brain activity using functional […]
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Tractionless movement.
Understanding how cells move autonomously is a fundamental question for both biologists and physicists. Experiments on cell motility are commonly done by looking at the motion of a cell on a glass slide under a microscope. In those conditions, cells are observed to “crawl” on the surface. Crawling is well understood: cells attach themselves to […]
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Recycling… Identity issues…
The secret to a long life? For worms, a cellular recycling protein is key. Scientists at Sanford Burnham Prebys Medical Discovery Institute have shown that worms live longer lives if they produce excess levels of a protein, p62, which recognizes toxic cell proteins that are tagged for destruction. The discovery, published in Nature Communications, could […]
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