Tag Archives: brain

The Four Lobes of the Cerebral Cortex

The brain, the brain, the center of the chain…

— The Babysitter’s Club

The cerebral cortex is the outside part of the human brain’s cerebrum, with the cerebrum consisting of two hemispheres connected to each other by another structure called the corpus callosum. Each hemisphere’s cerebral cortex is traditionally divided into four main lobes, which loosely manage specific brain functions and specifically all voluntary actions of the body.

Because each side of the cerebral cortex has four lobes, I guess you could say that the cerebral cortex has eight lobes. Interestingly, each hemisphere is a bit functionally different in its operation, so perhaps those eight lobes are indeed distinct: left frontal lobe, right frontal lobe, left parietal lob, etc.

There has been research over the years about the functional differences in the hemispheres. Roger Sperry won a Nobel prize in 1981 for his pioneering work on split-brain research, although some of those findings are now known to be much more nuanced than before. Psychiatrist Iain McGilchrist has written a interesting sounding book on the differences between the two hemispheres, that is high on my to-read list!

  • Frontal Lobe: attention, planning, deciding, movement
  • Parietal Lobe: language, taste, touch, temperature
  • Temporal Lobe: hearing, emotion, smell, memory
  • Occipital Lobe: sight, vision

Further Reading:

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

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

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

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

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

[*11.148]

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The Brain with David Eagleman

sq_whowhatSpeaking of brains, “The Brain with David Eagleman” by neuroscientist and author David Eagleman is currently showing on PBS. The first episode “What is reality?” was pretty good, showing reasons why what we think of as an objective reality is really just a temporally delayed and conceptually constructed neurological fabrication.

The six episodes are titled:

  1. What is reality?
  2. What makes me?
  3. Who is in control?
  4. How do I decide?
  5. Why do I need you?
  6. Who will we be?

I wonder if the answers to these questions will pretty much be “the brain, the brain, the brain…”. Check your local listings and tune in to find out!

Books:

David Eagleman / The Brain: the story of you

David Eagleman / Incognito: the secret lives of the brain

David Eagleman / Sum: forty tales from the afterlife

David Eagleman / Why the Net Matters: six easy ways to avert the collapse of civilization

References:

http://www.eagleman.com/

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

[*9.56, *9.57]

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The Whole Brain Model of Ned Herrmann

sq_herrmann_brain

Are four different kinds of thinking performed in four distinct areas of the brain?

  • Facts: logical, analytical, fact based, quantitative (left cerebral)
  • Forms: sequential, organized, detailed, planned (left limbic)
  • Feelings: interpersonal, feeling based, kinesthetic, emotional (right limbic)
  • Futures: holistic, intuitive, integrating, synthesizing (right cerebral)

I’ve arranged the quadrants differently than usual. Some might want to see the diagram rotated 180 degrees, so that Facts are at the top. However, there are several reasons that I prefer this arrangement, with organized at top, synthesizing at right, kinesthetic at left, and quantitative at bottom. Part of my confusion is that I ordinarily want to place both Facts and Forms at top, and Feelings and Futures at right.

References:

Ned Herrmann / The Creative Brain

Ned Herrmann / The Whole Brain Business Book

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

http://www.herrmannsolutions.com/what-is-whole-brain-thinking-2/

Facts, Form, Feelings and Future in Museum Guiding

Notes:

Images of Whole Brain Herrmann.

The images above remind one of the “Simon Says” toy! Blue, red, green, and yellow are often used in company logos. Three are pigment primary colors, and three are light primary colors. Do colors help one distinguish the quadrants?

Also see the following post, “A Story for Everyone”:

https://equivalentexchange.wordpress.com/2011/06/09/a-story-for-everyone/sq_whowhat

(Where my Who, How, Why, and What are arranged appropriately as Feelings, Forms, Futures, and Facts.)

[*6.120, *6.121, *8.92, *8.139]

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