Seminar Papers
Scientists have know for decades that psychedelic drugs’ famous effects are linked to elevated levels of the neurotransmitter serotonin. Researchers are interested not just in single chemicals but also in overall brain activity, because the most complicated brain functions arise from lots of different regions working together. From experiment, Researcher found two main effects of the psilocybin. New connectivity pattern tended to disperse more quickly under the influence of psilocybin than under placebo. Second effect was in the opposite direction and very different from normal brain’s stable connections.
If you are interested in the topic, you can read more in detail as linked below
Read more : http://blogs.discovermagazine.com/d-brief/2014/10/29/brain-psychedelic-drugs/#.VGAxOYvkfgf
Many theories abound but most agree that consciousness has to involve the integration of activity from several brain networks, allowing us to perceive our surroundings as one single unifying experience rather than isolated sensory perceptions. Counter-intuitively, scientists found that the woman’s loss of consciousness was associated with increased synchrony of electrical activity, or brainwaves, in the frontal and parietal regions of the brain that participate in conscious awareness. The brain can’t distinguish one aspect from another, stopping a cohesive experience emerging.
If you are interested in the topic, you can read more in detail as linked below
Read more : https://www.newscientist.com/article/mg22329762-700-consciousness-on-off-switch-discovered-deep-in-brain
To date, the cerebellum has been known as a brain region for movement control, but many recent researches have shown that the cerebellum has more functions.
The cerebellum contains a large number of neurons but nobody knows what they are doing and they are for. This article said the difference of correlation in the cerebellum and neocortex between primate and human was found due to relatively rapid evolutionary expansion of cerebellum.
In these days, some evidences are now found that the cerebellum might have a role of language and other cognitive function.
If you are interested in the topic, you can read more in detail as linked below
Read more : http://www.sciencedaily.com/releases/2014/10/141002123629.htm
Three scientists have shared the 2014 Nobel Prize in physiology or medicine. This year’s laureates have discovered an ‘inner GPS’ in the brain that makes it possible to orient ourselves in space, demonstrating a cellular basis for higher cognitive function. They found a cell in hippocampus that always activated when a rat was at a certain area. Other nerve cells were activated when the rat was at other places. Scientists concluded these cells and after that, they identified another type of nerve cells, called ‘grid cell’, which generate a coordinate system and allows for precise positioning and path finding.
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One of neuroscientists insists that brain scans can read people’s mind, soon. In order to realize his thoughts, the neuroscientist uses EEG and fMRI data. Even though two methods still have limitations, scientists can reconstruct faces that subjects are viewing during the fMRI scan. Each scientist has their own algorithms to analyze brain data, but their fundamental goals is understanding how the brain does and what it does. A current issue of mind reading brings up important ethical and public policy questions about privacy.
If you’re interested in the article, please click the link to the article below and you can see in detail.
Read more : http://edition.cnn.com/2014/04/12/health/brain-mind-reading/index.html?iref=allsearch
Though many neurons have different shapes and sizes, they have common characteristic which neuron should have in general. But newly discovered cells have different and unknown process compared to basic neurons. In these neurons, the axon does not emerge from the cell body, but arises from a lower dendrite instead. The cells were discovered in the mouse brain, especially in the hippocampus. And human have the same general brain structure and types of hippocampus cells as mice.
If you’re interested in the article, please click the link to the article below and you can see in detail.
Read more : http://www.foxnews.com/health/2014/09/29/strange-new-type-brain-cell-discovered/
A Chinese woman has been turned out that she doesn’t have large part of her brain. Nobody have known that even she is 24. She have problem on her cerebellum, which is called small brain that control voluntary movements and balance as well as learn specific motor actions and speak. But She is only mild problem speech and has moderate motor deficiency. This rare case occurs new interesting issue for many researchers.
If you’re interested in this article, please click the following link and see in detail.
Read more: [http://www.newscientist.com/article/mg22329861.900-woman-of-24-found-to-have-no-cerebellum-in-her-brain.html#.VCjPJy5_uY3]{.ul}
People tend to think of our memories depend on his/her past. But the truth is, many studies show that our brains constantly edit our memories to rearrange events and change dialogue. Researchers has started researching by using engineered mice to control neural activity in the mice’s brain. Researchers give two stimulus, fear and happiness with electronic shock and interacting a female mouse. And researchers used a special blue light to control memories later. And on next experiment two group mice were experimented on opposite way. After this experiment mice had become terrified of their romantic playmates. This experiment could lead how unpleasant memories are formed in the first place and it would be helpful to clinical tools.
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Scientists have developed the new mathematical technology for mapping large connections within the white matter tissue of living human brains. Differently from previous research, the new technology gives a mathematical analysis and open-source software to decide which of the two estimates is better.
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Read more: http://news.stanford.edu/news/2014/september/brain-communicate-wandell-091014.html
Researchers have found the effect of listening to the favorite song with the functional magnetic resonance imaging (fMRI). Listening to the song, especially favorite song, activates that the adjacent region of hippocampus, which is involved in memory and emotion. This scientific result could support that the why the emotion or mental states were experienced differently by people listening to the different genre of music.
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