HN Theater @HNTheaterMonth

The best talks and videos of Hacker News.

Hacker News Comments on
RSA ANIMATE: The Divided Brain

RSA · Youtube · 6 HN points · 6 HN comments
HN Theater has aggregated all Hacker News stories and comments that mention RSA's video "RSA ANIMATE: The Divided Brain".
Youtube Summary
In this new RSA Animate, renowned psychiatrist and writer Iain McGilchrist explains how our 'divided brain' has profoundly altered human behaviour, culture and society.

Taken from a lecture given by Iain McGilchrist as part of the RSA's free public events programme. To view the full lecture, go to http://www.youtube.com/watch?v=SbUHxC4wiWk.

The RSA is a 258 year-old charity devoted to creating social progress and spreading world-changing ideas.

Follow the RSA on Twitter: https://twitter.com/RSAEvents
Like the RSA on Facebook: https://www.facebook.com/rsaeventsofficial/
Listen to RSA podcasts: https://soundcloud.com/the_rsa
See RSA Events behind the scenes: https://instagram.com/rsa_events/

------
Produced and edited by Abi Stephenson, RSA. Animation by Cognitive Media.
HN Theater Rankings

Hacker News Stories and Comments

All the comments and stories posted to Hacker News that reference this video.
I think you're right. There seems to be two sorts of attention in the mind, narrowly focused attention and broad diffuse attention.

I see the goal of meditation not so much as alternating between the two modes but rather like balancing them and running them both in parallel.

This entire video is really excellent, but see particularly this bit here, where Iain McGilchrist describes the concept.

https://youtu.be/dFs9WO2B8uI?t=88

anon2020dot00
Interesting, a lot to ponder on with regards to "The Divided Brain".

The diffused mode could be the broad diffuse attention while focus mode is the the narrowly focused attention. It seems like there is specialized parts in the brain for attention with one hemisphere for narrow and the other for broad. But I think that this is just one theory and it could also be the case that these two modes are more evenly distributed throughout the brain.

gerbilly
I wasn't really focused so much on where in the brain the two types of attention were located. It may be as he describes it in the video, or it may not.

For meditation, however, I feel strongly that the goal is to achieve a balanced state of mind, and the balance is as I understand it, is between these two types of attention.

>(The old: left hemisphere math, right art or vice versa has been debunked if I remember correctly)

As usual with biology, it's a bit more complicated than the '60s explanation ever revealed to the public. https://youtu.be/dFs9WO2B8uI

RSA animation of this topic: https://www.youtube.com/watch?v=dFs9WO2B8uI

First time heard of this, very interesting. Thank you for sharing.

Hey, thanks for the appreciation.

Indeed, Ian Mc Gilchrist mentions how empathy is the realm of the right brain hemisphere.

There is a good animated summary of his work:

RSA ANIMATE: The Divided Brain https://www.youtube.com/watch?v=dFs9WO2B8uI

That question has a very complex and complicated answer, hence why McGilchrist devoted the entire first half of the book to it, I can hardly summarize it here. You might want to watch the RSA Animated talk by McGilchrist:

http://www.youtube.com/watch?v=dFs9WO2B8uI

If this reminds you of Julian Jaynes, then yes, there exists some similarity, but, to quote Wikipedia:

"McGilchrist, while accepting Jayne's intention, felt that Jayne's hypothesis was "the precise inverse of what happened" and that rather than a shift from bicameralism there evolved a separation of the hemispheres."

In my opinion, it seems like a better question to ask then consists of asking if what McGilchrist describes holds 'all the way down', and I lack an answer to that.

I want to quote at length because it's fascinating in the context of the left/right hemisphere concepts Iain McGilchrist has been best known for (especially the idea that left-hemisphere dominance is a relatively recent human adaptation):

https://www.youtube.com/watch?v=dFs9WO2B8uI

https://www.ted.com/talks/iain_mcgilchrist_the_divided_brain

https://www.thersa.org/globalassets/pdfs/blogs/rsa-divided-b...

https://en.wikipedia.org/wiki/The_Master_and_His_Emissary

Linguists also administered several brain exams specifically geared towards measuring Genie's language comprehension. On one such test she had no difficulty giving the correct meaning of sentences containing familiar homophones, demonstrating that her receptive comprehension was significantly better than her expressive language. Genie also did very well at identifying rhymes, both tasks that adult split-brain and left hemispherectomy patients had previously been recorded performing well on. During these tests an EEG consistently picked up more activity from the two electrodes over the right hemisphere of her brain than from those over the normal locations of the Broca's area and Wernicke's area, and found especially high involvement from her right anterior cerebral cortex, lending further support to the researchers' conclusion that Genie was using her right hemisphere to acquire language.

As early as 1972 Genie scored between the level an 8-year-old and an adult on all right-hemisphere tasks the scientists tested her on, and showed extraordinarily rapid improvement on them. Her ability to piece together objects solely from tactile information was exceptionally good, and on spatial awareness tests her scores were reportedly the highest ever recorded. Similarly, on a Mooney Face Test in May 1975 had the highest score in medical literature at that time, and on a separate gestalt perception test her extrapolated score was in the 95th percentile for adults. On several other tests involving right-hemisphere tasks, her results were markedly better than other people in equivalent phases of mental development; in 1977 the scientists measured her capacity for stereognosis at approximately the level of a typical 10-year-old, significantly higher than her estimated mental age. The scientists also noted in 1974 that Genie seemed to be able to recognize the location she was in and was good at getting from one place to another, an ability which primarily involves the right hemisphere.

Genie's performance on these tests led the scientists to believe that her brain had lateralized, and that her right hemisphere had undergone specialization. Because Genie's performance was so high on such a wide variety of tasks predominantly utilizing the right hemisphere of her brain, they concluded her exceptional abilities extended to typical right-hemisphere functions in general and were not specific to any individual task. They attributed her extreme right hemisphere dominance to the fact that what very little cognitive stimulation she did receive was almost entirely visual and tactile. While even this had been extremely minimal it had been enough to commence lateralization in her right hemisphere, and the severe imbalance in stimulation caused her right hemisphere to become extraordinarily developed.

By contrast, Genie performed significantly below average and showed much slower progress on all tests measuring predominantly left-hemisphere tasks. Stephen Krashen wrote that by 2 years after the first examinations on her mental age Genie's scores on left-hemisphere tasks consistently fell into the 2½- to 3-year-old range, only showing an improvement of 1½ years. On sequential order tests she consistently scored well below average for someone with a fully intact brain, although she did somewhat better on visual than on auditory tests. The scientists especially noted that she did not start to count until late 1972, and then only in an extremely deliberate and laborious manner. In January 1972 the scientists measured her in the 50th percentile for an 8½- to 9-year-old on Raven's Progressive Matrices, although they noted she was outside of the age range of the test's design. Similarly, when the scientists administered Knox Cubes tests in 1973 and 1975 Genie's score improved from the level of a 6-year-old to a 7½-year-old, more rapid than her progress with language but significantly slower than that of right hemisphere tasks.

May 19, 2014 · 2 points, 0 comments · submitted by gmays
Mar 18, 2012 · 4 points, 1 comments · submitted by siavosh
siavosh
This talk really resonated with me. As engineers, I think we can acknowledge the power of abstraction/reason/focus. But too many times we find ourselves idolizing these things.

A couple golden quotes from the video:

"The left hemisphere is the Berlusconi of the brain, it controls the media...the right hemisphere doesn't have a voice"

“The intuitive mind is a sacred gift and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift.” -attributed to Einstein.

HN Theater is an independent project and is not operated by Y Combinator or any of the video hosting platforms linked to on this site.
~ yaj@
;laksdfhjdhksalkfj more things
yahnd.com ~ Privacy Policy ~
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.