The largest brain structure, the cerebrum, is where the highest form of thinking

The cerebrum or cerebral cortex looks like a cauliflower or two halves of a walnut.
In humans it is larger and highly wrinkled while there are fewer wrinkles in lower animals and it is completely smooth in rats.
Frontal lobes—sending commands to skeletal muscles, short-term memory, emotion, making plans, thinking creatively, taking initiative, speech (left hemisphere).
Occipital lobes—visual processing.
Parietal lobes—processing touch information, attention, various mental operations.
Temporal lobes—processing auditory information, memory, perception, emotion, language comprehension (left hemisphere).