The storage in sensory memory and short-term memory generally have a strictly limited capacity and duration, which means that information is available only for a certain period of time, but is not retained indefinitely. By contrast, long-term memory can store much larger quantities of information for potentially unlimited duration (sometimes a whole life span). The capacity can also approach infinity (unlimited).
‘Memory’ labels a diverse set of cognitive capacities by which we retain information and reconstruct past experiences, usually for present purposes. Memory is one of the most important ways by which our histories animate our current actions and experiences. Most notably, the human ability to conjure up long-gone but specific episodes of our lives is both familiar and puzzling, and is a key aspect of personal identity. Memory seems to be a source of knowledge. We remember experiences and events which are not happening now, so memory differs from perception. We remember events which really happened, so memory is unlike pure imagination. Yet, in practice, there can be close interactions between remembering, perceiving, and imagining. Some memories are shaped by language, others by imagery. Much of our moral and social life depends on the peculiar ways in which we are embedded in time.
“(Memories) are necessarily memories of particular events or situations, namely of episodes in the subject's autobiography”
Christoph Hoerl
Costa-Mattioli, M; et al. (2007). "eIF2α Phosphorylation Bidirectionally Regulates the Switch from Short- to Long-Term Synaptic Plasticity and Memory". Cell 129: 195–206. doi:10.1016/j.cell.2007.01.050. PMID 17418795
Hoerl, Christoph and McCormack, Teresa (2005), ‘Joint Reminiscing as Joint Attention to the Past’, in N. Eilan, C. Hoerl, T. McCormack, and J. Roessler (eds), Joint Attention: communication and other minds (Oxford: Oxford University Press), pp. 260–286.
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