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Thursday, March 21, 2019

Essay --

Experimental findings intimate by performance on a variety of different tasks, divided retentivity (EM) for specific events declines as a function of advancing age, even in healthy individuals (episodic memory Tulving., 1983 Light., 1991 Craik & Jennings., 1992). The question of how best to account for this decline in functional terms is a long-standing one (Light., 1991). This paper will concenter on the use of functional neuroimaging to investigate the neural correlates of age-related changes in episodic memory encoding between sr. and younger adults. With specific concentrate on on the prefrontal cortex (PFC) and hippocampus regions. With the emergence of functional neuroimaging technology, portentous advancements in current knowledge of the human memory have evolved. with such technology, the measurement of cerebral metabolic activity screw be measured during cognitive tasks (Langley & Madden., 2000). This enables the identification of specific wit regions involved in recruiting specific memory processes activated during cognitive tasks (Langley & Madden., 2000). Recent availability of these neuroimaging techniques has provided enlightening insight for theories of memory, opening an avenue for further research into cognitive age-related neuroscience. Until of late much age-related memory decline has been documented through behavioural studies, suggest that some aspects of memory functioning during aging have age-associated structural brain changes (Langley & Madden., 2000). Increasing numbers of studies have explored the associations between these memory deficits and structural changes, (eg., Golomb et al., 1994 Raz et al., 1998, 1999 as cited in Langley & Madden., 2000). As humans age, many impairments occur in the cognitive syst... ...g of similar (not dissimilar) objects compared to younger adults. likewise this response predicted behavioural performance at bottom both groups and evidently found to be related to structural changes indoor s this region. This study provides valuable evidence for age-related differences within the hippocampal, these changes may impact older adults performance on a range of episodic memory tasks. Similarly Wilson et als. (2006) model that accounts for age-related susceptibility to interference, suggests that age-related changes in the DG may consequent in less efficient pattern separation due to an damage ability to reduce similarity among new input pattern (Wilson et al., 2006). thereof it may be suggested that age-related difference discussed in the evidence above can be associated with natural/general deterioration of healthy ageing individuals. In summary.

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