Recent comments in /f/science

FreeQ t1_j6nl847 wrote

Reply to comment by StormlitRadiance in Researchers develop coating that prevents synthetic fabrics from shedding harmful microplastics in the wash by BlitzOrion

When you compare the cost per wear of fast fashion which can wear out after a few wears, vs quality clothing which can last, be repaired and passed down it’s actually a much better deal to buy quality. Quality second hand clothes can be found for about the same price as fast fashion if you know how to look.

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sennbat t1_j6nklsg wrote

Reply to comment by Lady-Seashell-Bikini in Legged robots aren't yet ready for real-world environments, new research suggests. To help future robots thrive, scientists say the industry needs to implement a set of universal safety testing regulations. by Impossible_Cookie596

Wheels are incredibly limiting for many of the dangerous-to-humans purposes robots would be very useful for. Wheels only really work at all in an environment explicitly built to support wheels, and they can't handle any kind of rapid elevation change with fixed infrastructure.

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chrisdh79 OP t1_j6ngqdz wrote

Reply to Study finds that poor sleep quality increases aggression, possibly by affecting emotional cognition by chrisdh79

From the article: A lack of quality sleep can cause aggressive behavior, according to recent longitudinal findings published in the journal Biological Psychology. Brain imaging data revealed that the effect may be related to reduced activity in the prefrontal cortex and increased activity in the limbic regions.

Good sleep is paramount to the healthy functioning of our brains and bodies. Studies have shown that a lack of quality sleep can hinder our ability to regulate our thoughts and emotions and inflict consequences on our behavior. One of these consequences might be increased aggression.

While multiple studies have indicated a link between poor sleep and aggressive behavior, the direction of this relationship remains unclear — does poor sleep actually cause aggressive behavior? Study authors Haobo Zhang and Xu Lei conducted a longitudinal study to attempt to answer this question. Through neuroimaging data, they also explored the potential brain mechanism responsible for the relationship between sleep and aggression.

“As sleep plays an important role in the physical and mental health of individuals, we thought to uncover the causal relationship and mechanisms between sleep quality and aggressive behaviour in order to raise public awareness of the importance of sleep,” said Lei, a professor and director of the Sleep and NeuroImage Center at Southwest University in China.

Zhang and Lei obtained data from the Behavioral Brain Research Project of Chinese Personality (BBP), an ongoing study of undergraduate students from Chongqing, China. They focused on data collected from two time points separated by two years. For the current analysis, the sample consisted of around 450 students between the ages of 16 and 26 years old.

At both time points, the participants completed an assessment of their subjective sleep quality in the past month, and a measure of aggression that included the sub-dimensions of hostility, physical aggression, impulsiveness, and anger. Students also underwent functional magnetic resonance imaging (fMRI) to measure their brain activity.

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Reply to Study finds that poor sleep quality increases aggression, possibly by affecting emotional cognition by chrisdh79

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