Mind and Behavior Essay

Excerpt from Essay :

Mind and Behaviour

Episodic memory, a type of explicit memory, includes memory for specific times, places and events that can be clearly and explicitly described. Impairment to episodic memory is one of the most common presenting clinical symptoms of Alzheimer's in its early stages. How does episodic memory function and what mechanisms are involved and affected by its dysfunction in Alzheimer's disease? Sperling et al. (2010) describe how a default network comprised of the medial temporal lobe and cortical regions are most prominently involved in memory function, in which the posteromedial cortices play a key role in the encoding and retrieval of memories. These regions are particularly susceptible to early amyloid deposition involved in the development of Alzheimer's disease (Sperling et al., 2010). Functional abnormalities in these regions have been detected through magnetic resonance imaging studies of individuals with clinical presentations of Alzheimer's disease, as well as individuals at risk of developing Alzheimer's disease, such as
...It is noted by Sperling et al. (2010) that MRI imaging revealed that the changes to these regions manifest as increases rather decreases in measured activity, which they have interpreted as demonstrated excitotoxicity leading to imminent functional failure of the neuronal networks. Furthermore, these findings may lead in the future to potential effective predictive models and treatments for Alzheimer's disease (Sperling et al., 2010).

Explicit memory is most significantly implicated in the development of Alzheimer's disease, but what about implicit memory? Contrary to explicit memory, implicit memory involves task performance outside of the realm of conscious awareness, which includes memory for how to perform everyday tasks without conscious recollection and…

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References

Fleischman, D.A., Wilson, R.S., Gabrieli, J.D., Schneider, J.A., Bienias, J.L., Bennett, D.A. (2005). Implicit memory and Alzheimer's disease neuropathy. Brain, 128(9), 2006-15.

Lanciano, T., Curci, A., Semin, G.R. (2010). The emotional and reconstructive determinants of emotional memories: an experimental approach to flashbulb memories. Memory, 18(5), 473-85.

Sperling, R.A., Dickerson, B.C., Pihlajamaki, M., Vannini, P., LaViolette, P.S., Vitolo, O.V., Hedden, T., Becker, J.A., Rentz, D.M., Selkoe, D.J., Johnson, K.A. (2010). Functional alterations in memory networks in early Alzheimer's disease. Neuromolecular Medicine, 12(1), 27-43.

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