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Cerebrum is Latin for ‘brain’ and it is the largest part as a whole. Perception, imagination, thought,
judgment, and decision occur in the cerebrum. The surface of the cerebrum is the central cortex and
it is composed of six layers of neurons. It includes about ten billion neurons and fifty trillion synapses.
It is divided into two sections, the left and the right hemispheres. The right side of the cerebrum controls
things such as imagination and three-dimensional forms. The left side controls numbering skills, posture,
and reasoning. The hemispheres also consist of many other parts such as the lobes. It consists of four
lobes; the occipital lobe, the parietal lobe, the temporal lobe, and the frontal lobe.