The Brain and the Cortex

The central nervous system is comprised of the brain and the spinal cords, which carry all the nerves. The outermost shell of the brain is known as the cerebral cortex and it is where all cognitive function occurs. Motor skills, sensations, emotions, and thoughts originate from this zone. It can be divided into four lobes:

  1. Frontal Lobe: Also known as the motor cortex, this portion of the brain is involved in motor skills, higher lever cognition and expressive language.
  2. Occipital Lobe: Also known as the visual cortex, this portion of the brain is involved in interpreting visual stimuli and information.
  3. Parietal Lobe: Also known as the somatosensory cortex, this portion of the brain is involved in the processing of other tactile sensory information such as pressure, touch and pain.
  4. Temporal Lobe: Also known as the auditory cortex, this portion of the brain is involved in the interpretation of the sounds and language we hear.

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