stereognosis

People suffering from Alzheimer's disease show a reduction in stereognosis.

For other types of dementia, stereognosis does not appear to decline.

Stereognosis tests determine whether or not the parietal lobe of the brain is intact.

Testing graphesthesia can be substituted for stereognosis if a patient is unable to grasp an object.

Examples include the ability to discriminate between sharp and dull objects touching the skin, stereognosis, graphesthesia, and two-point discrimination.

While the Krukenberg procedure's poor cosmesis makes it very rare, it does preserve proprioception and stereognosis in the functional stump and so allows for effective maneuvering.

Dejerine's cortical sensory syndrome: Loss of proprioception and stereognosis with retention of touch, pain, temperature and vibration seen in parietal lobe lesion.

As a result, the octopus does not possess stereognosis; that is, it does not form a mental image of the overall shape of the object it is handling.

Discriminative sensation is well developed in the fingers of humans, and allows us to feel fine textures and determine what an unknown object in our hands is without looking at it (stereognosis).

Damage to the posterior portion of the spinal cord and/or interruption to the posterior spinal artery causes the loss of proprioception and epicritic sensation (e.g.: stereognosis, graphesthesia) below the level of injury.

This sensory information is transmitted by the posterior column-medial lemniscus pathway of the spinal cord, which also carries the sensations of fine touch, stereognosis, tactile pressure, graphesthesia, texture recognition, kinesthesia, two-point discrimination, proprioception, and vibration.