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The Parietal Lobe
The Parietal Lobe
The Parietal Lobe
The Parietal Lobe
The Parietal Lobe
The Parietal Lobe
The Parietal Lobe
The Parietal Lobe
The Parietal Lobe
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The Parietal Lobe

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  • 1. The Parietal Lobe
  • 2. Location <ul><li>“ The parietal lobes are superior to the occipital lobes and posterior to the central sulcus (fissure) and frontal lobes.” </li></ul>
  • 3. What…? <ul><li>Superior means above or over and posterior means behind. </li></ul><ul><li>So basically, that means that it’s above the occipital lobe and behind the frontal lobe. </li></ul><ul><li>The central sulcus is a fissure in the brain between the parietal and frontal lobes. </li></ul><ul><li>It also divides the primary motor cortex from the primary somatosensory cortex. . </li></ul>Central Sulcus
  • 4. Function <ul><li>The parietal lobe controls and processes “somesthetic sensation,” and taste </li></ul><ul><li>Somesthetic sensation includes touch, pain, and physical awareness, and is handled by a structure called the primary somatosensory cortex </li></ul>
  • 5. More Functions <ul><li>The parietal lobe also coordinates sophisticated perceptive abilities, such as the ability to perceive spatial relationships </li></ul><ul><li>Broca’s and Wernicke’s areas are also part of the left portion of the parietal lobe </li></ul><ul><li>The former is concerned with the ability to speak, and the latter is concerned with the comprehension and construction of speech </li></ul>
  • 6. Diseases, Disorders, and Dysfunctions <ul><li>Tumors in the parietal lobe may cause seizures or astereognosis, and can warp the skull. </li></ul><ul><li>Astereognosis: inability to identify objects by touch </li></ul>
  • 7. Consequences of Damage <ul><li>Damage of the left parietal lobe can cause something called Gerstmann’s Syndrome </li></ul><ul><li>Symptoms include difficulty with writing (agraphia), mathematics (acalculia), language (aphasia), and the inability to percieve objects normally (agnosia) </li></ul>
  • 8. Damage Continued <ul><li>Damage to the right parietal lobe can cause neglect of part of the body or space (contralateral neglect), and can cause difficulty in drawing </li></ul>
  • 9. More Damages <ul><li>Damage to both sides of the parietal lobe can cause Balint’s syndrome, which impairs visual attention and motor control </li></ul><ul><li>Victims of this disorder can have trouble controlling their gaze, reaching for objects, and integrating an entire scene </li></ul>

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