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Causes
All causes of Astereognosis is a result of stroke or major head injury. The results of a stroke or head injury cause brain damage, thus restricting the brain from functioning in particular regions which may damage the nerves. From the above information, it is recognized that Astereognosis can be caused solely by any type of brain damage. There are many different failures in the brain which may cause Astereognosis, including damage in the parietal lobe, damage in the posterior association areas, the pathways in the medial lemniscus, the posterior columns of the cervical spinal cord, the posterior roots of spinal nerves, and in the brachial plexus.

Parietal Lobe
The Parietal lobe of the brain is located in the mid section of the brain. The parietal lobe is used for sensory information such as pressure, touch, and pain. Astereognosis is usually caused by damage in the parietal lobe of the brain. This damage in the parietal lobe is located directly opposite of the area that has the affected body part. The damage is in the lesions part of the parietal lobe in the brain. In conclusion, when there is a damage in the parietal lobe, it sacrifices, some or all of the brain's capacity of sensory input. Due to this damage, the brain is unable to connect with the nervous system, therefore losing the individual's ability to understand the object they are holding.

Association Areas
There are three different types of association areas associated with the brain which include posterior association area, limbic association area, and anterior association area. The posterior association area is the zone that surpasses through three of the four lobes which include the parietal lobe, temporal lobe and occipital lobe. The limbic association area goes through the edge of the cerebral hemisphere in the brain. The anterior association area is the area from rostral to postcentral gyrus. The posterior association area covers three of the four major lobes that contribute to the brain's main usages. One of the four major lobes is the parietal lobe which associates with sensory information. The second of the four lobes is the occipital lobe which helps with visual stimuli and information. The third of the four is the temporal lobe which is associated with sounds and language. The last lobe is the frontal lobe which helps the brain with reasoning, motor skills, higher level cognition, and expressive language. The posterior association area is located at the back of the brain which means it does not surpass the frontal lobe. During Astereognosis, the brain is able to function with regular motor skills since the frontal lobe is not within the posterior association area, another main cause of Astereognosis. Since the frontal lobe is not associated with the posterior association area, people that have damage in the posterior area fortunately, do not lose their memory. Another cause of Astereognosis is posterior association areas in the brain which is also located opposite from the area that is affected. The posterior association area is a part of the brain that helps link information of various parts of the brain, specifically the major lobes of the cerebral cortex.