When listening to Korean music… What did she say?

(Source: facebook.com)


MYTH: Once your brain cells die, they can’t grow back. The brain does not change.

This follows the myth that you are born with all the neurons you’ll ever have. In fact, some neurons do regenerate and/or change. If they couldn’t, you’d have lost your sense of smell years ago! Not to mention, you’d never be able to form new memories or learn new things.

In the neuroscience community, we often discuss this with terms like “neurogenesis” and brain “plasticity.” Meaning that new neurons can grow (neurogenesis) and can change (plasticity) with time. Adult neurogenesis in mammals appears to occur in the olfactory bulb (these neurons have frequent turnover, due to their exposure and death) and the hippocampus- the part of the brain that creates memories (more info here). There is evidence that it may happen elsewhere in the brain too (for instance, this paper in Cell showed that it happens to interneurons in striatum).

However, unfortunately, some nerves can’t repair themselves or regrow once damaged in adulthood (like those in the spinal column). Not all neurons are like this, and sometimes they can repair themselves with partial damage but not when completely damaged, as comes into play with paralysis and Alzheimer’s disease. The field is still learning about these and which factors make them irreparable or irreplaceable. Maybe one day we’ll be able to fix all neural damage (people are investigating how to do this now! We’re not close to a cure, but others are beginning to understand this better).

For now, it’s important to know that this absolute statement is a myth, and some neurons do regrow- and our brain is changing all the time, as we learn new things and experience new memories.

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As someone who wants to study the human consciousness I found this very interesting.

Scott Routley was a “vegetable”. A car accident seriously injured both sides of his brain, and for 12 years, he was completely unresponsive.

Unable to speak or track people with his eyes, it seemed that Routley was unaware of his surroundings, and doctors assumed he was lost in limbo. They were wrong.

In 2012, Professor Adrian Owen decided to run tests on comatose patients like Scott Routley. Curious if some “vegetables” were actually conscious, Owen put Routley in an fMRI and told him to imagine walking through his home. Suddenly, the brain scan showed activity. Routley not only heard Owen, he was responding.

Next, the two worked out a code. Owen asked a series of “yes or no” questions, and if the answer was “yes,” Routley thought about walking around his house. If the answer was “no,” Routley thought about playing tennis.

These different actions showed activity different parts of the brain. Owen started off with easy questions like, “Is the sky blue?” However, they changed medical science when Owen asked, “Are you in pain?” and Routley answered, “No.” It was the first time a comatose patient with serious brain damage had let doctors know about his condition.

While Scott Routley is still trapped in his body, he finally has a way to reach out to the people around him. This finding has huge implications.




What a fucking nightmare, just kill me.

I know a girl who was hit by a drunk driver and in that state for a year. When she woke up the first thing she did was tell off the doctor who tried to convince her mom to pull the plug. She heard *everything* while being called brain dead.


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