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Unformatted text preview: 1-Review the types of memory impaired in patient HM and what types of memory are intact. What types of memory task could HM learn? Patient HM lost his ability to form Long Term memories. He could only remember memories from before his surgery(anterograde amnesia), but showed 2 yrs of retrograde amnesia. Although he could not form long term memories he was still able to form short term memories as well as his procedural memory. He was able to perform tasks such as the digit span task, as well as the match to sample taskand the Incomplete-drawing test.. Although his short term memory was still intact, distractions were a limiting factor. He could only memorize what he could attempt at as along as he had no distractions. Even simple distractions such as a loud noise would disturb patient HM.***HM was able to pursuit motorand the reverse mirror reading task. His skill level increased and his number of errors decreased every day he practiced, but he had no memory of having practiced it before.2-Review the basic memory problems associated with Korsakoff’s disease and the part of the brain affected by the disease. What is a confabulation? Korsakoff's disease results from a deficiency of the B-vitamin thiamine as a consequence of alcoholism. Damage to the diencephalonoccurs, resulting in anterograde and retrograde amnesia (recent memory is better than past). Nondeclarative, procedural memory is left intact.Korsakoff's patients often exhibit confabulations: false memories(not lies or delusions) invented to fill in the gaps in memory.3-When a patient has a head injury and begins to recover, what changes do you see in their retrograde memory impairment? Patients with head injuries often exhibit post-traumatic amnesia, severity of which is a good indicator of how one will recover. Over time, retrograde amnesia tends to improve. However, memory from the time of coma, the time of injury, will never come back. There is also improvement in anterograde amnesia as the patient recovers.4-What is the serial position curve? What are the primacy and recency effects? The serial position curve is a distribution graph that shows the accuracy ofrecall. This curve shows that when people try to remember a list of numbers or words, we typically tend to remember words at the beginning and/or at the end of a list, but we do not usually remember middle numbers/words as well. Primacy effect: Remembering words at the beginning of a list.Recency effect:Remembering words at the end of a list.5-What is the difference between declarative and procedural memory? Which region of the brain is important for declarative memory? Which region of the brain is important for short-term memory?...
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- Spring '10