Somatic Sensory Cortex
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Questions and Answers

Which area of the somatic sensory cortex involves a topographic map of the body known as spatial orientation?

  • Somatic sensory area II
  • Somatic sensory area I (correct)
  • Association sensory area
  • Post central gyrus

    • In the somatic sensory area I, how is the body represented in terms of spatial orientation?

  • It is inverted: body is represented upside-down except the face (correct)
  • It involves a topographic map of the body known as spatial orientation
  • It is crossed: receives thalamocortical sensory signals from opposite side of the body
  • The area of representation is directly proportional to the number of specialized sensory receptors in this area

    • What type of sensory signals does somatic sensory area I (SSI) receive?

  • Sensory signals from the primary motor cortex
  • Sensory signals from both sides of the body + from SSI
  • Thalamocortical sensory signals from opposite side of the body (correct)
  • Sensory signals from the face and trunk

    • Which area of the somatic sensory cortex is below the primary sensory area SSI and receives sensory signals from both sides of the body + from SSI?

    <p>Somatic sensory area II</p> Signup and view all the answers

    What is the function of somatic sensory area I in the recognition of?

    <p>Fine touch, stereognosis, vibration, and proprioceptive sensations</p> Signup and view all the answers

    Which area of the somatic sensory cortex is responsible for discrimination of fine gradations of weight and temperature?

    <p>Somatic sensory area I</p> Signup and view all the answers

    Which part of the body has a large representation area in somatic sensory area I?

    <p>Thumb</p> Signup and view all the answers

    Which area receives thalamocortical sensory signals from both sides of the body + from SSI?

    <p>Somatic sensory area II</p> Signup and view all the answers

    What type of signals does Somatic Sensory Cortex receive from opposite sides of the body?

    <p>Thalamocortical sensory signals</p> Signup and view all the answers

    What do areas such as thumb and lips have a large representation area in somatic sensory cortex?

    <p>They have more specialized sensory receptors in these areas.</p> Signup and view all the answers

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