<prompt> Stereoanesthesia is due to lesion ofNucleus GracilisNucleus cuneatusCerebral cortexSpinothalamic tract  <response>: C Cerebral cortex Stereognosis: The ability to identify objects by handling them with out looking at them is called stereognosis. Ability obviously depends upon relatively intact touch pressure sensation is compromised when the dorsal columns are dam- aged. It also has a large cortical component; impaired cortex sometimes occurs in the absence of any detectable defect in touch pressure sensation when there is a lesion in the parietal lobe posterior to the postcentral gyrus. 