Spotlight - Marshall McLuhan # 4

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https://app.podscribe.ai/episode/52969347
Speaker 0 (0s): Well, here we go. We are back TrueLife podcast on Thursday, Thursday to Thursday, Thursday night. Do you remember what we were talking about? Let me refresh your memory, my friends, but before I refresh your memory, let me refresh how awesome you are. You wake up, tell yourself your awesome. Give there's a little Pat on the back, you wake up in. The first thing that you thought about was something beautiful. Did you look out your window and see a rainbow? 

Oh my gosh. Look up this rainbow. It is so pretty, so many blues and purples. How about a, a little dollop, a little, a little kid walk in their dog. That's always a cool one. Right? Would be a butterfly on your shoulder. Maybe a nice whoosh, a nice calm, wind blowing over the plant's in your backyard. That's the whisper of the earth embracing you. 

Something like that. Right I'm not sure that last part flowed together. Like I wanted it to Well now, I guess I can refresh your memory. We we're doing a spotlight on mr. Marshall McLuhan and I left off, you know, where I left you. I left off at East meets West and the hemispheres, not just on our planet, but in our brain, right at the left hemisphere on the right hemisphere, we have the orient meets the Oxidental. 

You know what that makes me think of, you know, the town and country symbol, or at least that's what we call it in Hawaii or The I think more accurately its the yin and the yang, you know, it's a circle with a black Paisley in a white Paisley with the white Paisley has a little black.in it. And the black Paisley has a little white.in it. Think about that symbol for a minute. It's a really powerful symbol. One cannot exist without the other in it seems they are always flowing together and that pattern of the yin and the yang be it male and female or left brain, right brain. 

It seems to be a pattern of behavior as well as a symbol of what's happening. Think about our political parties in the U S aren't. They always like morphing into the other one. Like the Republican's are becoming the Democrats, Democrats are become when the Republicans of a concern become when the Democrats is just so symbolic of this circle of life, then the cycle of life in the more that I think about the symbol, the more that I realize how powerful that actually is, is really a mesmorizing to think about it. 

And I think it fits nicely here with this East meets West and the hemispheres. I just can't. It just seems so strange to me. The way our brain is constructed is also the way the world is constructed or is it because our brain is constructed one way. That's how we see the world. That's probably more accurate in a previous podcast. I talked about the similarities between supply chains and neural networks. 

Speaker 1 (3m 56s): I just 

Speaker 0 (3m 58s): It's one of those things that really gets me. I, I, I don't think we can really create anything in the outer world. That's not already is something that's been hardwired into us, but I'm kinda getting out into the muddy waters. Let's bring it full circle back to the brain and some of the Marshall McLuhan's ideas about processing information in the brain. So the brain on the outside as a, in a way in a grossly anatomical way, the brain appears to be what it seems Walnut like and symmetrical covered all over with convoluted fishers designed to give more tissue area. 

But underneath within that three pounds of whitish mush is a seeding electrochemical masse, which has the power to function asymmetrically. Normally of course we do not know it. If we decide to go for a jog, the left hemisphere through the Corpus callosum sends a signal to the right hemisphere to move both hips, synchronously synchronously. Is that correct? 

Speaker 1 (5m 11s): Say that route as well. 

Speaker 0 (5m 15s): We Right a capacity largely controlled by the left posterior lobe, the right hemisphere guides, the curly cues of the West Palmer method, millions of neural interfaces keep us coordinated. Although if we might take a slight detour, have thought the fact that neurons never actually connect or touch should be of immense interest to neuro physiologists. 

When an electrical impulse reaches the tip of a neuron's tail or axon, it discharge is a chemical called in your own transmitter. Let me pause there for 

Speaker 2 (5m 58s): A minute. If you remember yesterday, we talked about how the brain is not connected, but it interfaces. And if you remember my little diatribe, the world is not connected, but it interfaces. It's a very big distinction there. Everyone wants to talk about how everything is connected. It's the wrong word. Everything interfaces is this chemical message diffuses across the gap called the synapse to receptors located in the next cell triggering yet another electrical charge that courses through another axon until the message reaches millions of other neurons, the brain, it would appear as a mosaic that resinates in its discrete parts. 

That's the left side of the upper brain has a very specialist role. It is largely concerned with linguistic matters. The ability to order to quantify to label the right side of the neocortex is best in spatial tasks. The sense of the multi-dimensional the field of vision in each eyes divided between the left and right brain Josephine Sims tells us that the left hemisphere prefers units of neural information, which can be said to be similar and focal. 

Whereas the right brain area favors on integrated units have data the back or a posterior lobes of the upper brain, which deal with specific touch sensations and spatial information interact vigorously with the frontal lobes, which tend to abstractly play with the constraints of time and the ability to plan the world have now linked to the world of the future. 

And when I'm sorry, and then there is the lower brain, the various levels of earlier tissue, which covered and evolved over millions of years, the spinal cord and the brainstem that attend to such basics as heartbeat and respiration, the art complex reptilian, CDE of aggression, ritual, Tara territory, social hierarchy, the limbic system cradle of our emotions. 

Paul McClain says that the upper brain lives in an uneasy peace with the lower end midbrain. And what we may actually be talking about are three separately, interfacing cognitive systems. However, fascinating such a theory may be. We should focus the relationship between the cortical hemispheres, which in our view is the projection of consciousness, consciousness being the some interaction between oneself and the outside world. 

The hemispheres manifest their very nature by the way, in which they perceive and analyze the environment. Carl Sagan says this ability is the unique Mark of the primate, the area's of Berocca and Veronica in the left cortical hemisphere centralize our capacities for speech hearing and writing and thus mediate our expression of comprehension in language. The left hemisphere is the seat of hierarchies and categories of the linear, the mathematical and the sequential. 

The ordering sense of the left brain is quantitative. The diachronic reading, writing, naming within a perception of significant order. We are not surprised there are for when neuroscientists to place the guidance of complex sensory motor skills like typing or adjusting a micrometer in that part of the cortex, the left hemispher...