Interesting.
The cognitive scientist Donald Hoffman believes that evolution and quantum mechanics conspire to make objective reality an illusion.
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Category: neuroscience – Page 1006
Interesting read on Chemo’s impact on the brain and brain functioning known as Chemo Brain.
During and after chemotherapy, many cancer patients describe feeling a mental fog, a condition that has been dubbed “chemo brain.” Why this happens is unclear, but researchers have found a new clue to understanding this syndrome. A study in the journal ACS Chemical Neuroscience reports that chemotherapy in rats affects their chemical messengers dopamine and serotonin, which are associated with cognition.
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Not surprised;
A long line of research links poverty and depression. Now, a study by Duke University scientists shows how biology might underlie the depression experienced by high-risk adolescents whose families are socio-economically disadvantaged.
The study, published May 24, 2016 in the journal Molecular Psychiatry, combined genetics, brain imaging and behavioral data gathered as adolescents were followed for more than three years as part of a larger study.
The results are part of a growing body of work that may lead to biological predictors that could guide individualized depression-prevention strategies.
The visible impacts of depression and stress that can be seen in a person’s face—and contribute to shorter lives—can also be found in alterations in genetic activity, according to newly published research.
In a series of studies involving both C. elegans worms and human cohorts, researchers from the Indiana University School of Medicine and the Scripps Research Institute have identified a series of genes that may modulate the effects of good or bad mood and response to stress on lifespan. In particular, the research pointed to a gene known as ANK3 as playing a key role in affecting longevity. The research was published May 24, 2016 in the Nature Publishing Group journal Molecular Psychiatry, the top ranked journal in the field of psychiatry.
“We were looking for genes that might be at the interface between mood, stress and longevity”, said Alexander B. Niculescu III, M.D., Ph.D., professor of psychiatry and medical neuroscience at the IU School of Medicine. “We have found a series of genes involved in mood disorders and stress disorders which also seem to be involved in longevity.
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Inspirational bio of the “Quantum Man” Richard Feynman.
Richard Feynman was a Nobel prize-winning physicist whose contemporaries thought that he had the finest brain in physics. He was born on May 11, 1918, in Manhattan and grew up in Far Rockaway, N.Y., a section of Queens, on the Rockaway peninsula.
His parents were non-observant Ashkenazi Jews. His father, Melville Feynman, was a uniform salesman. Nevertheless, he tried to stimulate Richard to have an interest in science at an early age. Melville was the son of Lithuanian Jews who lived in Minsk and emigrated to the U.S. in 1895 when Melville was 5 years old. Although Melville wanted to become a doctor, the family could not afford to support his education. He tried a variety of occupations and finally settled in the uniform business.
The father of Richard’s mother (nee Lucille Phillips), Henry Phillips, was born in Poland, lost his parents at an early age, and was raised in an English orphanage where he was given the name Phillips before being sent to America. He started out as a peddler, developed a successful millinery business, and married a watchmaker’s daughter who had repaired his watch. She had come to the U.S. from Poland. Henry and his wife Johanna developed a successful hat business, eventually moving to a large house in Far Rockaway.
Initial evidence is found that the brain has a ‘tuning knob’ that is actually influencing behavior. Brain circuits can tune into the frequency of other brain parts relevant at the time. The scientific magazine Neuron is publishing the results of researchers at Radboud University the Netherlands on January 22.
Animals (and humans alike) have a metal map of the surrounding environment, consisting of place cells. These cells correspond with places in the physical space and fire when the animal reaches the place or remembers it. The mental map is fed by two sorts of information: with memories from earlier experiences, and with sensory information. But how does the mental map upload this information?
Direct measurements in the brain of mice, looking for their way in a maze, show that memory information is sent with another frequency to the mental map than sensory information is. The brain area representing the mental map synchronizes with these frequencies like a radio receiver: it is only tuning into the information that is important at a given time, an international team of researchers led by Francesco Battaglia from the Donders Institute for Brain, Cognition and Behaviour at Radboud University Nijmegen show. This research sheds light on the intriguing question how brain parts choose relevant information from the constant scattering of neurons going on in the brain.
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Presumably, this also will make further research on patients in this state harder, since they are potentially savable and can be harmed by some interventions.
Whose brain is it anyway?
The tougher, ethical question is whether this actually would help the deceased person, or (assuming it works) even bring about a new person.
Personal identity is generally assumed to involve some form of continuity. For someone to survive, we are generally discontent with mere bodily survival, there has to be a person with some psychological continuity too.
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