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nervous system
09/28/2020
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By Virgilio Marin
Hunger makes you better: Neural circuits in the brain drive improved physical performance and heightens motivation
An international team of researchers identified the neural circuit that dictates whether you will persevere or give up. This neural circuit may be responsible for why people perform better when they are hungry. The researchers conducted their study using fruit flies and found a small region in their brains that became highly active when the flies were starved. “Our experiments show […]
08/25/2020
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By Divina Ramirez
Study proposes that the “fight or flight” response is triggered by your bones, NOT adrenaline
In the face of fear and apparent danger, both humans and animals initiate an acute reaction to stress in their bodies. Their breath quickens, their pupils dilate and their hearts begin to pound faster than usual. These programmed changes occur as part of the so-called “fight-or-flight” response. Scientists have long believed that the hormone called adrenaline triggers […]
08/25/2020
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By Divina Ramirez
Shedding light on animal behavior: Rats can learn to play hide-and-seek just for fun, say scientists
In a recent breakthrough, scientists found that rats can be taught to play hide-and-seek just for the fun of it. The bizarre experiment, described in the journal Science, involved teaching rats both the hiding and seeking roles using social interactions and positive reinforcement. The German neuroscientists behind the experiment noted that the rats squeaked if […]
07/28/2020
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By Virgilio Marin
Study suggests unexplained neurological symptoms in certain people may be caused by “abnormal chemical changes in the brain”
An increase in certain chemicals in the brain may be causing movement problems in some people, according to a study published in the journal Neurology. Experts call these movement problems functional motor symptoms. These include tremors, muscle contractions and difficulty walking. These symptoms are primarily considered a psychological issue although their precise cause is still unknown. The […]
07/27/2020
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By Ralph Flores
Coronavirus found to have the ability to infect brain cells, says research
SARS-CoV-2, the virus responsible for COVID-19, continues to baffle even the most knowledgeable infectious disease experts. To add to the confusion, researchers from Johns Hopkins School of Medicine now suggest that the virus can potentially be neurotrophic. In their recent report, which was published in the journal Altex, the team detailed how the Wuhan coronavirus can infect the human brain and […]
07/20/2020
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By Virgilio Marin
This neuron-killing protein travels from the gut to the brain by hijacking a nerve
A recent study published in the journal Neuron found that alpha-synuclein (a-syn), a protein genetically linked to Parkinson’s disease, spreads from the gut to the brain through the vagus nerve. Researchers at the Johns Hopkins School of Medicine in Baltimore tested a previously proposed hypothesis suggesting that the gut-brain axis is involved in the progression of Parkinson’s — a […]
07/15/2020
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By Virgilio Marin
Where does Parkinson’s begin? Study claims it starts in the gut
A study published in the journal Acta Neurologica found that the gut may be the starting point of Parkinson’s disease. According to researchers from Aarhus University in Denmark, disease-causing proteins called alpha-synuclein travel up to the brain from the gut. Eventually, they make their way to the heart, as well. The findings of the study represent a significant step toward detecting […]
07/14/2020
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By Virgilio Marin
Why do sufferers of Alzheimer’s nap so much? Study suggests the disease kills the cells needed to stay awake
A study published in Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association found that in people with Alzheimer’s, tau proteins promote the degeneration of brain regions responsible for keeping people awake. This explains why excessive daytime napping is common among people with the disease and suggests that it could be an early sign of Alzheimer’s. Previous studies have explored […]
05/27/2020
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By Evangelyn Rodriguez
Scientists discover a reason for pain: Nerve endings in your skin help fight skin infections
Pain is universally viewed as a bad thing. Besides being an unpleasant sensation, pain is also associated with health problems and can affect day-to-day activities. But a new study published in the journal Cell sheds light on a different side of pain previously unheard of. Using an optogenetic mouse model, researchers at the University of Pittsburgh (UPIT) discovered […]
05/13/2020
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By Evangelyn Rodriguez
Immune cells ATTACK the aging brain and release a substance that hinders new nerve cell production, report scientists
One of the defining features of the brain that sets it apart from all other organs of the human body (except muscles) is that it is made up of cells that cannot regenerate. The nerve cells in the brain called neurons are terminally differentiated, meaning that, unlike skin cells or blood cells, they cannot reproduce. So […]
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