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Pages New Dacian's MedicineThe Human's Story - The Proto-Brain

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From all that has been done so far, in this long series of posts about the „human's story”, you have been able to encounter things from the most unusual, the least known, besides what anyone who has documented as much as knows …

But, everything does not end here … There are evolutionary or creationist details of the most important ones because it is impossible not to have concluded that everything is nothing more than a permanent completion of an ensemble, of a superorganism, after as we concluded a little earlier, without „finalizing” its description, generically called Homo Sapiens …

So, let’s continue with the actual evolution of this Homo Sapiens, the „evolutionary peak of primates”, even if the approach cannot include the „opinions” of the creators, for which it all starts about 7,000 years ago with Homo Sapiens „perfect” and … ready!

The history of Homo Sapiens (Cro Magnon), „certified by scientists”, begins about 200,000 years ago in East Africa. The history that was „lived” with certainty along with other hominid species, such as Erectus, Habilis, Neanderthal, until „Cro Magnon”, later Sapiens became the majority and then „unique” …

At creationists, there is no possibility of „comments” in what would be the vaguest allusion of the monkeys’ tangent to the creation of Divine Power … As we have already „found”, everything was, from the beginning, „Sapiens”, „the work of Power” Divine ”, without doubt, without comments.

So, from evolutionists, of their discoveries, the life of „Sapiens” begins in East Africa … Certain data are revealed only by the genetic markers that identify the „primary” population group in this area … But is that so? !?

We go further with „Cro Magnon” or „Sapiens”, which pass quickly to migration and the popularity of the whole earth, the limits of their migration being permanently signaled by the disappearance of an indigenous species to those places (all 6 species mentioned above).

At this moment in history, 200,000 years ago, from the ones presented above, the modern man „possessed” most „basic knowledge” / „accumulations”: the use of wood, bone and stone tools, the spear, the bow, the fire master, the hunter, fed on the gathering of natural resources of fruits, vegetables, plants, had developed the first small settlements, around or outside the caves, mastered an organized, articulated language that supported life, hunting, etc. in groups and others …

The development of the tools is certified by the archaeological discoveries, the use of fire, organized hunting, etc … So, it is obvious that a set of factors of „development” of the brain, of the skills, has acted constantly, overtime …

What are these development factors?!? This would be a „legitimate” question, as long as we only talked about enlarging the skull box, based on anthropological discoveries … Especially since, in fossils discovered a million years ago, the brain already has almost the „human” dimensions today.

Or I can complement the rhetoric with a kind of tangible reality: How do we all have a large cranial capacity, a large brain, relatively the same, but are there major differences in intelligence between healthy individuals?!? Attention, intelligence, and not cultural, professional, or similar luggage!

Essentially, the „gross” size of the human brain varies greatly, some of us being about „one-liter”, going up to volumes of 1.7 l … Most of this variation depends on the size of the body, but the average is where about 1.4 l, equal to the average size of the Neanderthal man’s brain (average deduced from the „analysis” of over 300 skeletons, fossils).

So, not necessarily the size matters … Then?!? After the ones analyzed, it would be something related to the „composition”, the „specialization” of the brain …

Well, our brain has „reorganized”, especially concerning the cerebral cortex, as can be deduced from changing the proportions of the central lobes, which attracted the „straightening” of the frontal part of the skull (forehead).

For example, the occipital lobe, responsible for the sense of sight is smaller than that of primates, the primary visual cortex representing only 2.3% compared to that of primates reaching 5%. The human cerebellum is also relatively small, about 20% smaller than the primates.

But man is more „developed” in terms of the parietal, temporal lobes, and the prefrontal cortex of the frontal lobe … And, for example, the temporal lobe (which is located in the middle cranial fossa at the base of the skull box, above the rock of the temporal bone) is 25% higher than in primates …

But, compared to the analysis of the fossilized skulls of our ancestors, it shows that this growth occurred late in the evolution of hominids … In Sapiens the middle cranial fossa is 20% larger compared to the archaic species, including the Neanderthal, proving quite empirically a massive development of perception. and the use of auditory language.

But not necessarily, because nowadays it is known that there are no clearly defined areas for certain functions and, most of the functions call for multiple areas of the brain … However, it is a kind of increase in the use of that area and a kind of evidence of the increased level of language involved in the global activities of Sapien’s brain.

Then, the prefrontal cortex „directs” higher „cognitive activities, such as language, thinking, planning, and social behavior. This, in comparison with the „fossil” skulls, is permanently present, evidence being the permanent „evolutionary lift, from the hollow shape” of the frontal part of the cranial box …

„Brutal”, this evolution is not the only thing that reveals the complex social interaction, our ability to conceive and process abstract ideas, and to „extrapolate” them in the communication of all forms.

All this is not enough, because from the anthropological point of view, as regards the brain, it seems that the „main” evolutionary element, the one that made the difference between Sapiens and Afarensis, for example, is the coefficient of encephalization, reflected in increasing the dimensions of the neocortex, in particular of the „cerebral cortex”, of the „ash substance”, and not in the „global” volume of the brain or the so-called „specialization” …

This coefficient increased, from Australopithecus Afarensis, if we still gave it an example, from 2.5, close to that of the primates of our times, to 3.7 to Homo Erectus, an average of 4 and „above” to the following hominids reaching the modern man, to Sapiens, to values ​​between 4 and 5, depending on the individual …

So, as a finding, from Erectus, the coefficient of encephalization already seems to be stagnating or, at most, a small increase, apparently insignificant …

Surprised?!? Please continue to remove the question marks (or have more but also a motivation to read my next posts)!

And, of course, that this development of the brain or the cerebral cortex, „strikes” a small problem such as „How can the brain develop in a” fixed „skull and, above all, how it can” thicken „the cortex as long as it seems that, from birth, we will have the same number of neurons that will decrease permanently, with age?!? ”…

I will start with the size of the skull, where it should be remembered that, both in primates and Sapiens ancestors, babies, if I may say so, have very malleable skulls, which can be accidentally or willfully deformed, relatively easily, both to facilitate birth ( pelvic passage) and, yes, you guessed it, to allow different adaptations to the brain or the environment …

This statement is not random … I invite you to remember the intentional deformation of the young skulls practiced in Egypt, Greece, Peru, Australia (so throughout the Earth’s surface) … And I do not emphasize this to „speculate” the malleability of the skull but it allows a correlation with the malleability of the brain which, in such skulls can no longer have the normal form but obviously will adapt and develop unaffected.

Remember the cranial sutures that, up to a certain age, allow some adaptability of the skull to the „growth” of the brain?!? Or, conversely, should I mention that intracranial pressure slightly influences the shape of the bones of the cranial vault during growth?!? Or, even if it’s pathological, remember that excess cerebrospinal fluid (CSF) inside the skull can exert pressure that causes the skull to swell like a balloon?!?

Now, the next step, let’s not forget about the undifferentiated stem cells … Even though current theories claim that the number of neurons is fixed, new findings in science show that neurons are not only replaceable but, in particular, can be multiplied in the „required” areas. „Through the stem cells that will develop in the” specific neuronal environment „, but without affecting the global decrease in the number of neurons …

But not this „remark” is important … It will be important to „implant” information into DNA that is nothing more than a storage medium … I will „scientifically” detail these findings of genetics in future posts … and thus the gene will go further. , at the future „births” that will „benefit” from the „malleability” of both the incipient development process of the new brain and of the cranial box …

So, from the researchers, from the moment of the birth of an individual, when the brain has only a quarter of the size that will „reach” it in the adult stage, it grows in size very quickly, in 90 days doubling its size, at the age of 3 years it reaches 80% of the „adult” dimension and at the age of 6 it reaches 90% of the size of the adult person’s brain.

I will approach this „period” based on a famous study …

Human babies begin to notice where the attention of others is directed, for example, looking in the direction of the parent, before the age of seven-nine months … And, until they turn two or three, depending on the baby, the children begin to understand that the actions of others have a purpose.

Well, primates, chimpanzees, gorillas, etc. have the same behavior, unlike in them, the reactions are faster in terms of age, even though the experiments show that they do not understand the purpose but, in the end, they take the action, as if they understood the purpose, with the maximum possible efficiency of that action.

And this without being able to suspect the „intervention” of mimicry … In the sense that, if the researcher pretends to have problems in reaching a goal, the primates do not imitate the behavior of the researcher but reach their goal without problems, avoiding the problems that encountered them. researcher …

I could go on with countless examples, discoveries, of this kind, but I will just point to the conclusion related to experiments like the one presented above: primates have a „theory of mind” similar to that of man, in the sense that „I understand that others see, I hear. and I know things ”.

I emphasize that I could go into some details „which will dispel any doubt”, but this I will do later … There is now neither the time to describe the „details” nor the „level of understanding and processing required” presumably …

For example, to understand my „escape” later, I will detail what „neither goes through your head”, continuing the „example” presented above …

In most mammals, the sclera is not white, but dark in color, so it cannot be noticed where the animal looks. So it is very possible that the human’s white sclera is not just a strange occurrence, this contrast between it and iris may have appeared just as a non-verbal mode of intercommunication, to help us see in what direction the others are looking.

This statement may seem „pointless” but if we consider that we are very social beings, from the earliest times and forms of existence, both to cooperate in all sorts of tasks and simply to survive, the capacity to survive to observe quickly and easily where one looks is becoming particularly useful and may have been the „adaptive” reason why our eyes have evolved so unusually compared to other animals …

Moreover, we are „animals” especially visual, social and communicative, which is why, from ancient times, there was the masterful perception described by Cicero in his thinking: „Ut imago est animi voltus sic indices oculi” („The face is the image” the mind, and the eyes are interpreted „).

Maybe that’s why newborns are sensitive to changing the direction they look at adults, at 6 months they can watch someone else’s eyes, at 18 months they follow our eyes without needing any additional clues, such as head position, etc … Compared to chimpanzees that, in the adult stage, follow the gaze but need for identification and the position of the head …

I should also point out that by interpreting one’s gaze we can „decipher” if that person is aggressive, dominant, submissive, often able to go into perceptions until „deciphering” if he is intelligent, competent, understanding, even if he is attracted to us ?!?

And, the white sclera also appears in some primates, chimpanzees, gorillas … So, it is a clear indicator of the presence and in our „ancestors”, hominids.

All presented are part of a much larger ensemble but it is quite important to note that there is clear evidence of this permanent adaptability, this permanent evolution, the human being evolving or evolving from one generation to another, from one DNA transmission to another. …

And, it comes with this little „detail”! Believe me, there are a lot of details! So, let’s return to the logical thread of argumentation!

We remained in the descriptions of an important „enough” detail, the structural relationship between the white matter and the gray matter, which reveals the levels of inter-neuronal connectivity, a level that in the child far exceeds the number of connections of an adult person …

This is because most researchers agree that a healthy child is born with all the neurons, from this moment, of birth, starting a cycle of downward evolution of their number.

So, in the end, what is involved in changing this relationship, between „gray matter” and „white matter”?!?

Simply the environment, the experiences to which the body is „requested”, the processes of „modeling” the brain being dependent on the „practiced” experiences that determine the „plasticity” and the ability to adapt the brain.

So, a kind of specialization on certain „developments”, „typified” by functionality, specific to each individual … So, from here and the idea of ​​individuality „related” to the brain, to the „lived” experience, studied, analyzed, etc.

But, if this structure, composition, or what it is, is still so „individual”, how is it possible to transmit it further, even in infinite „quantities”?!?

I think it is a legitimate question as long as it is indisputable that behaviors are transmitted and not just gestures, tics, or other „things” that are similar to reflexes. Well, you’ll see it! It is not a material mechanism, that’s why I will stop … But, to remember, genetically something is inherited …

So, on a careful note, the first period of brain development is given, indeed, by the information in the human genes, these having at the beginning of human life the main role … From the ones presented above, it is clear that the „genetic substrate” creates a kind of maximum absorption capacity in the first years of the life of the individual, a kind of substrate of „specialization” adaptive to the environment.

So it would be something „programmed”, transmitted through genes, which are nothing but elements providing „templates”, „essential information” for the functioning of the body, but being nothing but inert molecules, they are not involved in biological processes. And, as we have shown in the previous posts, they take into account the environment, they are directly influenced by it …

Therefore, we come to the second mechanism of brain modeling, the adaptive one, depending on the requirements of adaptation to the environment, specialization on various reactions, etc.

Modern studies say that everything „stands” in the neural connections that will be formed, each neuron being able to make connections with over 1,000 neurons, to a „volume” of the mature brain of over 100 billion neurons, resulting in huge potential.

So, the first logical question would be, why is the operational capacity of information absorption of the adult brain compared to the same brain in the child stage?

Well, I think everyone knows that the human brain has so-called circumferences, which look like folds. What would be the role of these folds?!? All researchers agree that these circumvolutions increase the surface area, area, processing, and expression areas through the gray matter …

But, all the researchers also agree with the fact that these circumferences appeared as a kind of evolutionary adaptation due to the necessity of adopting a constantly developing brain… „Framing” the brain into relatively small cranial vaults … In fact, „framing” „Of the neocortex, the newest formation of the brain from an evolutionary point of view, in small skull boxes …

For „clarifications”, the neocortex is a layer of cells with variable thickness, between 2 and 5 millimeters, which is presented as a thin, dark gray stripe, which follows the surface of the brain … From here it will be deduced immediately that the circumferences are „Necessary” to enlarge the surface of the neocortex and not necessarily, the surface of the brain …

If we still talked about the primary role of genes in the initial development of the brain of a human individual, the researchers, even if they justify this adaptation effect as being born of the need to adapt the brain in the „developing” skull of the fetus, in the intrauterine stage, we can now correlate with a kind of need to confirm the structure of the old brain to something that takes into account both past biologically, functionally and, above all, abstractly … So, not only by some kind of template „Species”, even evolutionary „adapted”, but also to a particular template, intellectual, etc.

So why would we exclude the „adaptability” of all the dimensions that describe the brain and skull box from one generation to another?!?

No matter how many „junkies”, bitches, etc., we would be, it is impossible not to raise the question: „Where does the genetic information appear as long as the organs of the fetus’s body gradually develop, following the course of life evolution, as we presented above?!? ” It is obvious that this is not an „intrauterine development” type adaptation, but an evolutionary „assumed” adaptation, transmitted on the „paths” of DNA.

And here we talk about a DNA that also evolves, permanently, from one generation to another, and, as you will see in future posts, even during the life of the same individual … Obvious conclusion no matter how long we have anchored in a way of DNA standard that must transmit the „genes” of the species further unchanged …

Which „unchanged”?!? It is a clear question that arises under the conditions in which both creationists and evolutionists accept evolution, change, regardless of its meaning …

But, all the ones presented are part of a much larger ensemble, but it is quite important to note that there is clear evidence of this permanent adaptability, this permanent evolution, the human being evolving or evolving from one generation to another, from a DNA transmission. the high …

And, at the end of this post, I will give some details about what these „specializations” would be all about.

The „road” of man „necessarily” passes through all kinds of such specializations … For example, one of the most „highlighted” specializations is represented by everything that attracted the use of fire … I made a „link” to the discovery of fire because many researchers identify the moment of mastery of fire with that of the „development” of the true Homo Sapiens … But is that so?!?

The old caves, including those of the Neanderthals, show traces of constant fire use, but this species did not „go” further in its „use” except for light, heat, possibly cooking. And, given the European placement of the Neanderthal area, „accidental fire” was hard to find … So, there were „methods” of use at the time and place desired for this fire.

Then there are whole „stories” about the discovery and use of cooking as a result of this use of fire … Do you think that this ability belonged only to the „group” Sapiens?!? We have to deal with accumulated discoveries over time, developed from Homo Habilis, over hundreds of thousands of years …

But, as the followers of this „cooking theory” who made Homo Sapiens „smarter” say, „fits in” with reality? Including the fact that „the art of cooking” gave people more time or „raised” them in the direction of organizing family or tribal groups, with the same result of the time gained?!?

Today’s monkeys have these behaviors without using fire or cooking …

And, even if we extend the reasoning only to some „proto-people” who took care of the fire and we still have to deal with some qualities in this direction … It is impossible that in this case there are no qualities attributed to being exclusively human in this sense…

So, the multiple „stories” of Prometheus type fall from a real, correct argumentation … Even the creationists have no „stories” about the „gift” of fire …

Then it would be medicine, medical practices, which have permanently helped man to deceive death … Or beliefs, which have permanently helped man to accept death … And any specialization you will want to choose …

In the case of all of them, it is not about a real specialization, real progress … A real specialization is represented by constant practice in interaction with the environment … Something that can no longer be missing from the life of man and not of his tools …

So, I think I can complete, by specialization it is obvious that „perspective”, „craftsmanship”, „projection”, „correlation”, etc. „intelligence” will be understood … And, many details about this topic in future posts!

Love, Gratitude, and Understanding (Namaste)!

Dorin, Merticaru