Big brain - Cerebrum

karthik · updated · flag

Cerebrum, the largest and the biggest part of the brain is where your thinking and sensing happens. This part of the brain is naturally divided into two halves. The left hemisphere and right hemisphere, which can be mapped into four regions of interest that are based on the naturally occurring folds in the brain called fissures.

Parts of the cerebrum

  • Occipital lobe - Located at the back of the head, this area of the Cerebrum processes all the visual information sent by your eyes and relates them with your memory.
  • Parietal lobe - This part of the brain processes multiple senses like taste, smell, temperature, touch, and helps in motor function, visual attention, and spatial navigation.
  • Temporal lobe - This area of the brain helps in processing auditory signals, visual sense, and memory.
  • Frontal lobe - This area involves the thoughts, decisions, voluntary motions of muscles, urges, rewards, smell, coordination, abstractness, and many other functions.

Right and left hemispheres

The human brain, for general purposes, can be considered as symmetrically divided into two halves longitudinally with naturally occurring deep folds called fissures.

Although it seems that these two cerebral hemispheres operate independently, it’s a huge misconception. The basic concept is that both the halves equally play roles in processing information. They constantly interface and exchange information.

For example, if you look at something with your left eye, the right hemisphere processes the signal first and then interacts with the left hemisphere to do additional processing. This interface layer lies deep within the hemispheres and is called the corpus callosum.