The brain, according to contemporary anatomy is divided into
- The forebrain which includes the cerebrum with its hemispheres and a deeper central part called the diencephalon which includes the thalamus and the hypothalamus.
- The midbrain which is a small part that serves to connect the forebrain with the hindbrain.
3. The midbrain, the medulla and the pons together form the brainstem. Anatomically, the cerebrum has two hemispheres just like the cerebellum and it is divided into lobes; the frontal lobe, the parietal lobe, the temporal lobe and the occipital lobe.
Generally the frontal lobe is said to be responsible for intellectual functions, memory, speech, concentration and the elaboration of thoughts. The parietal lobe is said to control the movements of all the muscles of the body and all the parts of the body is said to be represented in this area, the part of this area for the control of the movement of the hand is particularly well developed and this is not surprising considering its well-developed manipulative ability.
This area also receives input from all the muscles of the body and as a feedback nerves descend to control the movement of these muscles. The temporal lobes basically control hearing and this lobe also houses the very important Wernicke’s area which is called a general interpretative area in that all the information from surrounding areas converge here for integration and interpretation.
We then have the occipital lobe which is where visual impulses are received and integrated. This area therefore controls vision. The enormous enlargement of the brain over the recent thousands of years is to be seen in virtually all parts of the brain; especially the frontal, parietal and the temporal areas. This is seen mainly in the multiplication of the cells which is a response to the demands made on these areas. The enlargement of the other lobes is nothing more than a natural response to the enlargement of the area used for thinking which are the frontal lobe and the Wernicke’s area in the upper portion of the temporal lobe.
The increased demand on this called for a proportional increase in the size of the other parts since these basically belong to the same part of the brain called the cerebrum. The enlargement of the other parts therefore, must be seen as being under the control of the frontal lobe and occurred as a response to this. The proof of this is in the fact that there are extensive interconnections between the lobes of the same hemisphere and also between the lobes of the two hemispheres. This extensive interconnections guarantees the passage of information from one part of the hemisphere to the other, thereby facilitating a mutual interdependence.
The cerebellum is also basically divided into two hemispheres similar to what we have with the cerebrum. It is divided into an anterior lobe, a posterior lobe and a flocculonodular lobe. The different parts of the body too are represented in the cerebellum just like we have noted with the cerebrum. What has been discovered so far about the cerebellum is that it is concerned with the control of posture and movement. There are extensive interconnections between the cerebellum and the cerebrum and this would indicate that information constantly passes from one to the other. The cerebrum and the cerebellum are so similar in appearance that people over the years have generally referred to it as the “small brain”. Most of the functions of the cerebellum however are not known. Very fine precise movements are known to be controlled by the cerebellum and its damage can lead to widespread lack of co-ordination of movements.
The cerebellum is the spiritual receptive part which receives impulses from the spirit and passes it on to the cerebrum for further processing. Over the course of hundred of thousands of years, this function was neglected through the fall of man and as a result the cerebellum, because of evolutionary adaptation to its disuse shrunk progressively in size while the cerebrum which was constantly in use increased dramatically in size.
Since all our decisions were now made without due reference to the spirit which would have brought the cerebellum into play since this was the gateway to it, this implement, the cerebellum was as a consequence deprived of the principal part of its activity and consequently naturally had to shrink in size. If looked at properly the cerebellum can be seen to be a brain in its own right having all the properties and the functional capability of a full brain. The cerebellum, for example has more neurons than the cerebrum and has as many folding as the latter.
This is evidence that given the necessary stimulation it could come to grow equally in size to the cerebrum since it has the neuronal capacity for this. Its growth however, would automatically lead to a relative corresponding decrease in the size of the cerebrum because the latter has only grown at its expense. It shrunk in size due to the lack of spiritual activity among human beings; instead what we have is a pronounced intellectual activity which is conditioned by the discrepancies in the growth of the two brains. A strong cerebellum would allow spiritual works to be seen on earth because being a bridge to the spirit, it is able to receive from the latter and pass it on to the cerebrum. A strong cerebrum however allows intellectual works to be seen and this is the reason why we have more of the intellectual works on earth today and it has interfered in those things which are basically spiritual-human affairs.
The cerebrum, which is the seat of the intellect, has been used to make all sorts of decisions, including not only in earthly but also in spiritual-human matters. This however, has led to chaos and confusion because the intellect is closely bound up with the body which has its origin only on earth and as such would do very well if it were to confine itself to making decisions of an earthly nature, but if it also wants to decide on matters which go beyond the earthly like for example, human spiritual matters; the family, religion and so on, it must fail because this belongs to the ambit of the other brain, the cerebellum, which is able to receive directions for matters of spiritual purport from the spirit itself.
This is indeed a logical and natural arrangement and the rightness of it must convince him who gives these matters a little thought. We are therefore given an intellectual brain on the one hand and a spiritual brain on the other and the two brains should have been developed equally. The cerebrum has convolutions which are folding, the cerebellum too has these same convolutions; the cerebrum has two hemispheres, the cerebellum has the same; the cerebrum has all parts of the body represented on it, the cerebellum has the same and when looked at closely it has all the characteristics of a shrivelled brain. This has happened through thousands of years of disuse. In summary, what we have is a cerebrum that has outpaced the cerebellum in growth since the fall of man, which was an event that occurred many thousands of years ago.