Sorry for taking my time to respond Hadoblado, its been a busy week and I wanted to do a bit of study before I responded.
There is also a thread going on with
scorpiomover, over
here that you may be interested in.
Just hang onto it, I will only need to give it back to you later.
even the criminally statistically liberal practices of psychologists desperate to get published in the book-sale highway of the most popular corporate HR pop quiz junky personality inventory could not prop up evidence for this theory (soz got carried away there)
INTP poetry, I joined the forum to see eloquent strings of cynically loaded euphemisms; it makes my day!
Within the scientific community, leftbrain/rightbrain thinking is not taken seriously.
No, but lateralisation of function in hemispheres still is. It is well understood that a
Hemispherectomy will loose function and as such the procedure is predominately performed on children to ensure neural plasticity will allow the remaining hemisphere to develop capacity for lost functionality.
At a gross morphological level, I agree there is high level of symmetry. I also agree the popular assumptions of hemisphere functions were oversimplified.
brain and neural mapping will probably replace functions in the future and use it as an estimation of your personality, behavior,preferences but then i dislike the intrusion
I also agree with sushi, including disliking the intrusion and accept that my theory is oversimplified but I am just seeking something to use as the basis of further research. I'm happy to modify as more information comes to light.
However, my theory is more concerned with the how than the where. So if we review some of the basic understanding of lateralisation through right brain lesion/stroke studies, we can expose some of the lost functionality:
https://en.wikipedia.org/wiki/Right_hemisphere_brain_damage
Visual Processing
It appears as though they are only able to recognize the parts of a picture, symbol, etc. rather than seeing the image as a whole
Thinking requires an entity to be isolated from its environment in order to identify specific attribute and object. The left is dominant in predator/mating function as seen in the
avian brain studies. It seeks to reduce available options to a single certainty or a set of isolated entities with similar attributes .
Cognitive and communicative
This lack of ability to recognize emotion suggests individuals have an impaired theory of mind, the ability to recognize the thoughts and feelings of others outside of one’s self.
The left lacks the capability to perform a wholistic assessment of body language, facial expressions and tone in the context of the current experience. This is a loss of Fe, which is an objective value based ethical judgment of subject in context.
Tasks involving convergent semantic processing (“relatively straightforward linguistic tasks in which the number of responses is limited”), which involve the most straightforward meanings of words, are not nearly as difficult for RHD patients as tasks involving divergent semantic processing (tasks that “elicit a wide range of meanings which may diverge from a single semantic concept to include non-dominant meanings that are alternate, connotative, and/or less familiar”).
This is a loss of iNtuition. Intuition utilises relational information to provide convergence; ie. it identifies multiple possible outcomes or potential associated entities from a seed concept.
in an experiment in which RHD-affected individuals were asked to name items within a category, they tended to suggest objects connected in more ways than one (with many characteristics in common). For example, when asked to name vegetables, people with RHD would name spinach, cabbage, and lettuce, which share the attributes not only of being vegetables but also of being “green and leafy.” Such results “support a model of semantic processing in which the [right hemisphere] is superior in generating multiple, loosely connected meanings with little overlap,” a function clearly affected by right hemisphere damage
Ok, this is a loss of sensation. Sensation provides pattern matching of attributes, therefore the patient identifies the vegetables with the highest correlation of similar attributes. Thinking would deem this as the best match to the question. So, no value based judgement against preference, and no intuition to identify novel results that create a more distributed representation of answers to increase the possibility that may achieve the questioners preference better.
As a result of pragmatic deficits, individuals with right hemisphere damage have a hard time understanding the figurative cues in language and tend to simply understand sentences from their literal meanings. For instance if someone were to say, Joey took the lion’s share, they would assume Joey took the portion that belonged to the lion as opposed to the colloquial meaning-the majority.
Again no intuition. Another common reference I have seen is hot-dog which produces results of a panting dog not a fast food product. The answer was a pure logical response based on sensory attributes of the two words.
They also tend to show a lack of awareness for the knowledge they share with those they are communicating with and will mention people or things for which others do not have a reference.
A loss of relational or intuitive information and only the literal, localised reference remains. I’m sure if you gave them additional attributes, time, date, location when they had shared this information with you, they would remember. The issue is a loss of contextual information.
and, most significantly, in compiling information about the individual elements together to understand the situation at-large.
Big picture, this is the purpose of value based judgements and intuition. Back to
avian brain studies, the right hemisphere has evolved to identify predators. It expands to seek possibility. As the avian brain lacks a corpus callosum, the left eye will scan the surroundings for predator, the right eye will be scanning the ground for seeds amongst the pebbles.
Beeman (1993) cites a patient who mentioned his ability to read “straightforward texts” but noted that he had stopped reading novels with multiple characters as, in the patient’s words, “I can’t put it all together.”
Same issue as above. The capacity to construct complex environments, including moving objects and entities with personalities has been lost. The capacity to assign intent to an object is critical for survival. A stick and snake could share the same attributes. However, the right hemisphere can associate movement with predatory intent.
Ok, so that was cherry picking and it is Wikipedia, but I’m just trying to establish reasonable doubt. Iain Mcgilchrist's book: The Master and His Emissary: The Divided Brain and the Making of the Western World, goes into much greater detail of hemisphere lateralisation and cites many papers. It is a good read that I would recommend.
So it is not so much that the hemispheres are performing different functions; they both seperate / combine, store / recall the same subjective and objective experience; just in different ways. The left: objects and attributes (nodes, vertices, edges), the right: networks and relationships (edges, links, lines);
as in a graph.
It makes for a very neat error tolerant system as a complete relational network without objects, or all the objects without relationships will still allow you to decipher much of the other hemispheres information to make a very neat error correcting stripped array.
I went looking for this array style but it does not appear to be in use… could be a nice patent opportunity.
Just one last thing. The cerebellum does have many functions that are Sensory in nature so I suspect there is a higher alignment between the left and this structure. Likewise, Feeling is intertwined with emotion, so the limbic system and other deep structures is probably more closely aligned with the right. If that is the case, there should be evidence to support this.
