Cortical Column Structure Quiz

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What is the main difference between somatosensory area I and somatosensory area II?

Area I has a high degree of localization, while area II has poor localization

Where does the somatosensory area I lie in the human cerebral cortex?

Behind the central fissure

Which body part is represented in the most lateral portion of somatosensory area I?

The head

How are layers of neurons organized in the cerebral cortex?

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

What is the organization of sensory cortex columns?

<p>Vertical columns</p> Signup and view all the answers

Which part of the body has a higher number of specialized nerve endings according to the text?

<p>The lips and thumbs</p> Signup and view all the answers

What is the main function of the somatosensory association area?

<p>To combine information from different parts of the primary somatosensory area</p> Signup and view all the answers

What effect does lateral inhibition have on sensory perception?

<p>Enhances the degree of contrast in the sensory pattern perceived in the cerebral cortex</p> Signup and view all the answers

Where does surround inhibition primarily occur in the dorsal column system?

<p>At each synaptic level, including the dorsal column nuclei and thalamus</p> Signup and view all the answers

Which part of the brain plays a role in deciphering complex body sensations?

<p>Somatosensory association area</p> Signup and view all the answers

What contributes to increasing the degree of contrast in perceived spatial patterns?

<p>Inhibition of lateral spread of excitatory signals</p> Signup and view all the answers

Which region combines sensory information from multiple points within the primary somatosensory area?

<p>Somatosensory association area</p> Signup and view all the answers

What is the function of the columns of neurons at layers IV in the cortex?

<p>Function almost independently</p> Signup and view all the answers

Which area of the cerebral cortex is responsible for responding to muscle, tendon, and joint receptors?

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

What is the main function of Brodmann’s areas 5 and 7 in the cerebral cortex?

<p>Somatosensory association</p> Signup and view all the answers

What does the destruction of somatosensory area I mainly affect?

<p>Weight perception of objects</p> Signup and view all the answers

Which part of the brain allows for some degree of localization in somatosensory area I?

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

How does sensory signal analysis change as it spreads backward into the parietal cortex?

<p>It becomes more complex</p> Signup and view all the answers

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