Retroactive interference in visuo-spatial and verbal memory
Memory and forgetting are everyday phenomena, and though they have been studied for over a century the processes which underlie them have not been easily understood. Early in the twentieth century it was thought that forgetting was due to decay of memory traces over time. This account of forgetting suggested that decay was perhaps a natural consequence of the passage of time. But a competing theory of memory postulated interference as the culprit of forgetting: either prior learning (proactive interference) or later learning (retroactive interference) were what caused us to forget (Wixted, 2004). So which explanation best explained forgetting, interference or decay? Jenkins & Dallenbach (1924) found that subjects remembered more nonsense syllables after a sleep-filled delay than after an equal delay period in which subjects remained awake. Decay theory would predict no difference between the conditions, since it postulated that the passage of time was responsible for forgetting. But interference theory predicted less forgetting after sleep due to the absence of new learning. Hence decay theory was abandoned as the sole explanation of forgetting.
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Reduced false recognition in amnesia could be a result of impaired item-specific memory: the relationship between item-specific memory and gist memory. Nissan, Jack (2007)It is a common finding that amnesic patients produce fewer false recognitions than healthy controls, and this has led to assumptions that gist memory is damaged in these patients (Schacter et al., 1996, Budson et al., ...
Tracking memory CD4 T cells in vivo: requirements for the generation, survival and re-activation of memory cells MacLeod, Megan Kathryn Louise (The University of Edinburgh, 2005)
Bellamy, Katarina Jane (The University of Edinburgh, 2010)This thesis explores the role of gist memory and gist representation in the formation of false recognition, specifically in the Deese, Roediger and McDermott Paradigm. We found that normal individuals displayed a range ...