6. To imagine: is the main term associated to any operation on image models.

7. To think: it is the main term associated to any operation on symbolic

models.

For human beings, usually, the symbolic models are mixed with image models but

when "to think" is used, the general frame continues to be a symbolic one.

8. Intelligence: is the facility to make and operate a long-range model. There

is a kind of intelligence based on image models (human and animal) and one

based on symbolic models (human only).

9. To represent: there is a complex model, which is too big to be used as a

whole. Such a model can be associated to a simplified model, which on its turn

is associated only to a section of the main model. Such a model represents the

main model on the restricted domain. We should never forget that a

representation model is based on the main model, and the main model only is

fully associated to the external reality.

10. Emotion: this is a temporary state which occurs when a new external

reality appears, and no suitable short-range model is available. Emotion is

associated ONLY to a lack of a suitable SHORT-RANGE model. In such a situation

the PSM is activate. But the activated PSM does not consider this external

reality as a dangerous situation. Even so, it builds a suitable element. Such

an element is self-developing to understand the new external reality. The

emotion starts when PSM is activated, and disappears when a new suitable

short-range model is activated. Because emotion is associated with the

activation of PSM, in an emotional status, the conciousness disappears or is

at least attenuated.

The brain can predict the possiblity that an emotional status occurs.

Sometimes such status can be prevented by a suitable WBAM, built in advance.

That is, a ZM will build a WBAM based on the available information about a

future new external reality. ZM will activate that WBAM when the new external

reality occurs (see also the general theory).

We already emphasized that emotions are associated to the lack of a short-

range model, when a new external reality occurs. The word "angry" can be

associated with the lack of a long-range model associated with a full section

of the external reality (for instance when a person lives in an environment,

which he/she doesn't fit in). In such a situation, the PSM is activated as

well, but it has no solution. In fact, PSM can't build a long-range model. A

long-range model is difficult to build, because it starts from a general model

which is not directly associated to a specified external reality. The lack of

a suitable long-range model means that many short-range models can become

unstable, due to a lack of correlation between them. Such a person has a

feeling that there is a problem, but he/she cannot identify it. Such a person

is in an angry-status. About the same considerations can be associated to the

word "anxiety". Here we can see a class of problems associated to the fact

that the words in common life are not associated to the hardware and so, the

external definitions are not precise enough. As the language will evolve based

on internal definitions, the quality of the language will improve.

MDT is able to generate a definition, and then a word has to be associated to

that definition. Unfortunately, the words have already an external definition.

Thus, there are two possibilities: to invent a new word, or to use an already

existing word. In the latter situation, two definitions associated to the same

word could exist: an internal one generated by MDT, and an external one, as we

can find in dictionaries. My decision was to use as much as possible the

already existing words, with the risk to have two different definitions

associated to the same word. As MDT will be accepted, all the words associated

to functions of the brain will be associated only to their internal

definitions.

11: To be irritated, to be under stress

Such a phrase is used when there is a temporary situation of instability of

the structure of models. Such a status can affect the short-range models (to

be irritated) or the long-range models (to be under stress).

In the following, we will describe some situations when such a temporary

instability can occur.

11a. There is a normal model associated to the actual external reality. The

problem occurs when such external reality evolves in a cyclical way, for very

long time. In such a situation, the prediction of the evolution of the

external reality is identical with IR, forever.

If the external reality is a sound, and if the sound contains a sequence which

is repeated on and on, this uses a lot of energy of the brain for a nonsense

activity (due to the hardware design, it is impossible not to hear a sound).

Because the activation of other models becomes difficult, there will be an

instability of the structure of models, and so there is an irritation-status.

Examples: the use as weapon of the rattlesnake's rattle and of the "Chinese

drop"

It is important to observe two parameters: the length of the sequence and the

repetition interval. The musical piece called "Bolero" by Maurice Ravel

contains a sequence, which is long enough to produce no irritation. In fact,

every time when the sequence is repeated, there are other musical instruments.

In this way, this musical piece is not too close to the irritation limit. Even

so, at the end of the piece, the repeated sequence ends, producing an instant

relaxation.

Let's see this problem in the case of visual arts. Let's suppose a large white

surface. Such a surface can produce irritation, because in any point of this

surface, the IR is identical with the prediction. There is a natural tendency

to put some elements on that surface, to reduce the irritation. But, if the

details are randomly spread, the prediction will be different of the IR in

most of the points. This also can produce some irritation. The solution found

in about all cultural zones and times was to have some sequence made of

identical elements, but every element has to be complicated enough so that

sometimes the IR is identical with the prediction, and sometimes not. When

such a surface is explored, the brain seems to have a pleasure. The pleasure

can be defined as a situation when the prediction is close to IR, but about

never the same. This can be seen mainly on cultural products of ancient

cultures, but also nowadays.

We can see this also on the shape of the Christian cross: a Christian-Orthodox

cross has more detail than a Christian-Catholic cross because the Orthodox

religion is mostly oriented to image models while the Catholic religion is

more oriented to symbolic models.

The modern cultural zones are based mainly on symbolic models. There is a

reduced tendency to see all the details in a symbolic environment. Thus a

perfectly plane surface, without details, will produce no irritation. This is

so because, in a symbolic environment, the interaction based on image models

is not important anymore.

11b. The lack of stability of the structure of models could occur when the

external reality is unchanging for a very long time. Here, the prediction is

also identical with IR, but there is an additional technological feature,

which will be described below.

As we know from the main theory, any active model will predict in a continuous

automatic way the possible evolution of the external reality (this is a basic

hardware feature). Now, the problem is how often this prediction is made. My

supposition is that the speed of this activity is variable, and depends on the

speed of changing of the external reality. That is, when the external reality

is changing very fast, the new predictions are made also very often.

Now, if the external reality is not changing anymore, there could be a

problem: the model has to make a new prediction, but there is no reason to do

this. Such a situation can also produce a temporary perturbation of the

stability of the structure of models, i.e. irritation.

In such a situation, the brain could activate other ZMs, (e.g. ZMs which are

not connected to the unchanging external reality) up to the moment when there

will be a change in the main external reality. This activity could be a source

of mistakes or even accidents, as the local-ZM becomes, temporarily, one,

which is not connected to the main external reality. The accidents can occur,

for instance, when the external reality is changing and the suitable local-ZM

has not enough time to reinitialize.

Example: a driver is in a hurry and stops at a stoplight. The external reality

is not changing for a while and so there could be an irritation. Under stress

conditions, the driver could activate another model (associated or not to the

external reality) and so, he/she is not properly prepared for the moment when

the traffic light changes to green. Because this is an important source of

irritation, in some cities there is an additional display, which counts the

time for red or green status, and so the irritation is diminished.

Thus, time flows with a variable speed, depending on the speed of change of

the external reality (see ETA about "time").

11c. The word "irritation" is used also when an external factor interferes

with the activity of a main model. This external factor could also activate

the PSM. Such a situation can also affect the stability of the structure of

models and so, produce irritation.

As we know, faced with a new external reality (for instance a strong noise),

the brain will switch from the actual-ZM to another model, which understands

the new situation. When such external perturbation occurs on and on, the brain

is forced to switch the ZMs very often. Such activity can be affected by

mistakes, because switching from a model to another is a very complex

activity. When a model is deactivated, some information has to be stored to be

used when the model will be reactivated. Sometimes, the external reality can

change so much that the stored information becomes of no use. But the brain

does not know easily if the stored information is good or not at the new

activation. So, there could be mistakes, and the stability of the structure of

models can also be affected (irritation occurs).

Because the activation and deactivation of a symbolic model is much more

complicated than for an image model, the switching between a symbolic model

and an image model, or even worse, between two symbolic models, is very

dangerous (don't use the mobile phone when you drive, e.g.)

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