neuroscience

What happens in your brain when you are offered a delicious cake?

Normally, if you rationally consider that the cake they offer you is not the healthiest snack for you, your prefrontal cortex will try to overcome your self-control and you reject it with a "No, thank you." But imagine that they give you a tasty treat after having spent the whole day from meeting to meeting, studying, or simply subjected to too much stress. In this case, the prefrontal cortex, exhausted by so much effort, will not have enough energy to overcome the temptation.

They identify the center of credulity in the brain

When faced with an email from a stranger asking for money for a noble cause or a message from a financial scammer selling valuable stocks at a ridiculous price, it has been found that young and old tend to be more easily fooled than middle-aged people. . American scientists have identified the area of the brain responsible for credulity, and have proposed a theory to try to explain why at certain ages we are less likely to doubt these types of messages.

What happens in your brain when you listen to a catchy song?

Can't you erase the happy "song of the summer" from your mind? Ninety-nine out of a hundred people are susceptible to the syndrome of the catchy song (earmworm or "ear worm" in English), which implies that when listening to certain melodies they resonate over and over again in the head in an uncontrolled way.

The longer we stay awake, the slower we are

A study by scientists at Brigham and Women's Hospital (BWH) in Boston reveals that lack of sleep slows us down, even if we don't feel physically tired. Specifically, according to the neuroscientist Jeanne F. Duffy and her colleagues in the magazine 'The Journal of Vision', sleeping only between five and six hours each night can negatively affect the performance of complex visual tasks involved in jobs such as air traffic control.

How

Optogenetics is a technique used to 'turn' and 'turn off' groups of brain cells that is causing a furor in the neuroscience world. The method combines genetics, optics and virology and will allow studying the role of neurons in depression, anxiety, memory and social behavior.

Eating ice cream fights bad mood?

According to a recent study by the University of Maryland Medical Center, ice cream contains tryptophan, an amino acid that calms us down and reduces aggressiveness, increasing serotonin production. This helps fight stress, relax and sleep better.

Does the smell of jasmine make you sleepy?

Studying the scent of the jasmine flower, researcher Hanns Hatt and his colleagues at Heinrich Hane University in Susseldorf have found that it has practically the same effect as certain sedatives and anesthetics: it relieves anxiety and indexes sleep.

Why do humans smell worse than other animals?

A team of scientists, led by researchers from the Karolinska Institute in Sweden, has discovered that the olfactory bulb of humans - a structure of the vertebrate brain that processes sensory input from the nose - is distinguished from that of all other mammals in that, after being born, new neurons no longer develop in it. This fact could be the reason that humans lack a sense of smell as acute as that of animals.

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