Brain – Structure

Picture the brain

The brain looks a bit like a giant crinkled rubbery mushroom, with the average adult brain weighing about 3 lbs 5 oz (1.5 kg). Your brain is divided into two hemispheres: the left and the right. These are linked by a central processing unit called the corpus callosum.

Each half is split into four more compartments:

  • At the very back is the occipital lobe, which handles much of your visual sense.
  • Just behind the ear are the temporal lobes, which are involved in the organization of sound, memory, speech, and emotional responses.
  • At the top of the brain are the parietal lobes, which handle sensations, such as touch, body awareness, pain, pressure, and body temperature. They also help you with spatial orientation.

Behind the forehead are the frontal lobes, which are considered the home of our personality. The uppermost part of the frontal lobes is involved in solving problems, activating spontaneous responses, retrieving memories, applying judgment, and controlling impulses. It also modulates our social and sexual behavior. This area is more developed in humans than in any other animals.


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