Self-Imagining, Recognition Memory, and Prospective Memory in Memory-Impaired Individuals with Neurological Damage
AuthorGrilli, Matthew Dennis
AdvisorGlisky, Elizabeth L
MetadataShow full item record
PublisherThe University of Arizona.
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
AbstractThe present study investigated the reliability and robustness of a new mnemonic strategy - self-imagination - in a group of memory-impaired individuals with neurological damage. Despite severe memory deficits, almost all of the participants demonstrated a self-imagination effect (SIE) for recognition memory in study 1. Moreover, the ability to benefit from self-imagination was not affected by the severity of the memory deficit. In study 3, more than half of the participants showed a SIE on a task of event-based prospective memory. The data from study 2 suggest the SIE is not attributable to semantic processing or emotional processing and indicate that self-imagination is distinct from other mnemonic strategies. Overall the findings from the present study implicate self-imagination as a new and effective mnemonic strategy. The data also indicate that when it comes to memory there is something special about processing information in relation to the self.
Degree GrantorUniversity of Arizona
Showing items related by title, author, creator and subject.
Politics of Memory and Moving Forward: The Rise of Memorials and Counter-Memorials in Post-Conflict GuatemalaOglesby, Elizabeth; Pettersen, Christian Leland (The University of Arizona., 2013)Guatemala officially ended its 36-year civil war with the signing of the peace accords in 1996. After the signing of the accords, two truth commissions recorded valuable oral testimony and published their findings, with the claim they were spreading restorative justice. At the same time, retribution seemed far off; many of the generals in charge of orchestrating the genocide had impunity. On March 19, 2013, criminal prosecution for those generals began. In my thesis, I argue that in addition to truth commissions and criminal prosecutions, there is a third component to public healing and justice: sites of memory. I recognize that sites of public memory have function, that they open spaces for dialogue and reconciliation. Through the analysis of three sites in Guatemala, I examine the relationship between sites of memory and neoliberal peace, arguing that they are an essential element to the formation of a common narrative, and the strengthening of regional hegemony.
MEMORY FUNCTIONING IN PARKINSON'S DISEASE: THE EFFECT OF AGE OF ONSET ON HIGH SPEED MEMORY SCANNING.Kaszniak, Alfred; STEBBINS, GLENN THURSTON, III.; Nadel, Lynn; Domino, George; Allender, James; Greenberg, Jeff (The University of Arizona., 1987)A sample of 25 idiopathic Parkinson's disease subjects and 25 age and education matched elderly healthy control subjects were assessed for their speed of primary memory scanning speed using the Sternberg memory scanning paradigm. In addition, all patients were assessed for cognitive functioning as measured by the Mattis Dementia Rating Scale and the Wechsler Memory Scale. Significant differences were found between Parkinson's disease subjects and control subjects on speed of primary memory scanning, with the parkinsonian subjects performing significantly slower than the control subjects. Increased variability in the measure of memory scanning speed was noted for the parkinsonian subjects as compared to control subjects and different variables associated with increased cognitive disturbances in parkinsonian subjects were investigated as possible sources of this variability. It was found that the majority of variance could be accounted for by the parkinsonian subjects' age of symptom onset. Parkinsonian subjects who developed the disease later in life were significantly slower at primary memory scanning speed than were either parkinsonian subjects who developed the disease earlier in life, or than healthy control subjects. Cognitive variables measuring initiation and perseveration, construction and attention were found to be highly associated with increased primary memory scanning time. The relationship between these cognitive abilities and frontal lobe dysfunction is discussed. Also, the possible relationship between slowing of memory scanning and dopamine depletion is presented.
Investigating Spatial Memory Reconsolidation in Rats: Memory Updating, Effects of Aging, and Hippocampal Network ActivityFellous, Jean-Marc; Jones, Bethany Jayne; Nadel, Lynn; Glisky, Elizabeth; Barnes, Carol; Fellous, Jean-Marc (The University of Arizona., 2012)Upon acquisition, memories undergo an initial stabilization, or consolidation, process after which they are generally resistant to interference. There is now an abundance of evidence that reactivation or retrieval of a consolidated memory opens up a window of time during which the memory can be strengthened, disrupted, or updated via a process of "reconsolidation". This dissertation is comprised of three experimental studies in rats aimed at investigating previously unexamined aspects of this dynamic memory process. The first study assessed whether spatial memories learned under positively-motivated conditions could be updated with new information following reactivation. Rats that learned a second spatial task in the same environmental context as a previously learned task intruded items from the second episode during recall of the first. This result suggests that the context reactivated the memory for the first task, triggering reconsolidation and updating of the memory. The second study used the memory updating effect obtained in the first study as a behavioral measure to investigate the effects of aging on reconsolidation. Unlike in the young rats, the context reminder did not lead to intrusions of the second learning episode during recall of the first. Older adult human participants in this study also showed a different pattern of results than what had been seen previously in young participants. Therefore, in humans as well as in rats, it appears that aging may lead to changes in spatial memory reconsolidation. The third study piloted an experiment to examine hippocampal network activity associated with the spatial memory reconsolidation task used in the first two studies. Preliminarily, we found that the context reminder manipulation was associated with more place field stability across some spatial tasks and that stability across certain tasks was positively related to our measure of memory updating. Additionally, we found evidence that the context reminder enhanced neural replay of some learning episodes. While preliminary, these results suggest that both place field stability and replay may play roles in this reconsolidation paradigm.