Selective. . .

. . .  memory. . .

On the ride home from Pam's birthday dinner, we detoured past the apartment complex where we lived when we were first married.  Beautiful complex.  Well maintained and still very attractive.  Neighborhood has evolved. Many drastic changes have taken place while some, small sections still contain the quaint, old houses we so admired and fantasized about possibly buying (if we could have afforded it) way back then.  The pleasant drive triggered a litany of old memories from my very limited brain, some of which remain as clear as though they were yesterday. But others come with doubts about many of the details that I am able to recall.  Selective memory??  Probably. Nevertheless, I was able to continue the saga until we reached home.

(from wikipedia.com)
". . . Normal aging is associated with a decline in various memory abilities in many cognitive tasks; the phenomenon is known as age-related memory impairment (AMI) or age-associated memory impairment (AAMI). The ability to encode new memories of events or facts and working memory shows decline in both cross-sectional and longitudinal studies. Studies comparing the effects of aging on episodic memory, semantic memory, short-term memory and priming find that episodic memory is especially impaired in normal aging; some types of short-term memory are also impaired. The deficits may be related to impairments seen in the ability to refresh recently processed information. Source information is one type of episodic memory that suffers with old age; this kind of knowledge includes where and when the person learned the information. Knowing the source and context of information can be extremely important in daily decision-making, so this is one way in which memory decline can affect the lives of the elderly. Therefore, reliance on political stereotypes is one way to use their knowledge about the sources when making judgments, and the use of metacognitive knowledge gains importance.[8] This deficit may be related to declines in the ability to bind information together in memory during encoding and retrieve those associations at a later time.

Episodic memory is supported by networks spanning frontal, temporal, and parietal lobes. The interconnections in the lobes are presumed to enable distinct aspects of memory, whereas the effects of gray matter lesions have been extensively studied, less is known about the interconnecting fiber tracts. In aging, degradation of white matter structure has emerged as an important general factor, further focusing attention on the critical white matter connections. . . "

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