![]() ![]() Brain damage associated with Korsakoff's snydome is DIFFUSE The gradual, insidious onset and progressive development of Korsakoff's syndrome complicate the study of resulting retrograde amnesia Deficits in implicit memory depend on particular test used, but in general are less severe than in explicit memory During early stages of the disorder, anterograde amnesia for explicit episodic memories is most prominent symptom but as the disorder progresses, retrograde amnesia, which can eventually extend back into childhood, also develops Amnesia of Korsakoff's syndrome is similar to medial temporal lobe amnesia in some respects Lesions to medial diencephalon (medial thalamus + hypothalamus) and diffuse damage to several other brain structures including neorcortex, hippocampus, and cerebellum common Characterized by variety of sensory + motor problems, confusion, personality changes, and risk of death from liver, GI, heart disorders ![]() Korsakoff's syndrome is a disorder of memory common in people who have consumed large amounts of alcohol largely attributable to brain damage associated with thiamine deficiency that often accompanies heavy alcohol consumption Led to creation of 2 distinct categories of Long Term memroeis: Explicit and Implicit memories H.M's specific problem = difficultyi n MEMORY CONSOLIDATION: transfer of ST memories to LT storageģ) H.M's case was the first to reveal that a patient with amnesia might claim no recollection of a previous experience while demonstrating memory for it by improved performance (mirror-drawing and incomplete-pictures test). Renewed efforts to relate individual brain structures to specific mnemnic (memory-related) processes in particular, at clarifying the mnenomic functions of hippocampus + other medial temporal lobe structuresĢ) Discovery that he had difficulty forming certain kinds of LT memories without disruption performance on test of ST memory or his remote memory (memory for experiences in distant past), supported the theory that there are different modes of storage for ST, LT, and remote memory. Challenged the then prevalent view that memory functions are diffusely and equivalently distributed throughout the brain. 1) Showed that medial temporal lobes play an important role in memory. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |