1.4 The Brain and the Functioning of Nerve Cells

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Figure 1.32: The different sections of the human nervous system.

nected by the corpus callosum. The cerebrum is covered by the cerebral cortex. The left

hemisphere is connected with the right side of the body and vice versa.

In most people, the left hemisphere controls verbal skills and logic, the right hemi-

sphere spatial perception, art, and music. Each hemisphere is divided into 4 lobes:

frontal, parietal, occipital, and temporal.

The cerebral cortex is only 2 mm thick, but is responsible for cognitive functions,

such as speech, emotions, memory, and voluntary movement. The cortex is involved in

problem solving, emotion, complex thought, coordination of complex movement, initi-

ation of voluntary movement, processing tactile, visual, and sound quality stimuli, pro-

cessing of multisensory information, and language comprehension and production (Fig-

ure 1.33).

Figure 1.33: The different sections of the cerebral cortex.