The Parietal Lobe
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The Parietal Lobe

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    The Parietal Lobe The Parietal Lobe Presentation Transcript

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