Parietal Lobe
external image parietal.jpg

´╗┐Location and Functions

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  • The parietal lobes are located behind the frontal lobe at the top of the brain.
  • Main functions of the parietal lobes include sensation, perception, spatial orientation, integrating sensory input and speech.
  • Some of the sensations picked up by the parietal lobes are touch and pressure while some of the fine sensations picked up by the parietal lobes are judgement of texture, weight, size and shape.

Damage to the Parietal Lobes

  • Damage to the right parietal lobe can cause visuo-spatial deficits like a person having a hard time finding their way around new or familiar places.
  • Dyscalculia, which is a difficulty with mathematics, can also be associated with damage to the right parietal lobe.

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  • Damage to the right parietal lobe can result in neglecting part of the body or space (contralateral neglect), which can impair many self-care skills such as dressing and washing. Right side damage can also cause difficulty in making things (constructional apraxia), denial of deficits (anosagnosia) and drawing ability.
  • Damage to the left parietal lobe can cause a person to lose their ability to understand language (spoken or written).
  • Damage to the left parietal lobe can also result in what is called "Gerstmann's Syndrome." It includes right-left confusion, difficulty with writing (agraphia) and difficulty with mathematics (acalculia). It can also produce disorders of language (aphasia) and the inability to perceive objects normally (agnosia).

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References

http://biology.about.com/library/organs/brain/blparietallobe.htm
http://www.waiting.com/brainanatomy.html#anchor2703258
http://www.neuroskills.com/tbi/bparieta.shtml
http://www.sciencedaily.com/releases/2007/03/070322132931.htm
http://www.neuroskills.com/images/parietal.jpg