Role of parietal regions in episodic memory retrieval: The dual attentional processes hypothesis

Cabeza, Roberto

doi:10.1016/j.neuropsychologia.2008.03.019

Cited by 280 publications

(316 citation statements)

References 67 publications

(128 reference statements)

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“…This is consistent with neuropsychological studies showing that patients with parietal lesions reported ABMs that lacked episodic richness (Berryhill et al, 2007;Davidson et al, 2008). With regard to the role of the parietal cortex in episodic memory, the current findings can be interpreted in light of the dual attentional processes hypothesis (Cabeza, 2008;Ciaramelli et al, 2008), which distinguishes between the role of dorsal and ventral parietal regions. More specifically, it proposes that the dorsal parietal region mediates the allocation of attention controlling episodic retrieval depending on the rememberer"s goal, providing top-down attentional support for strategic retrieval processes.…”

Section: Neuropsychological Predictors Of the Proportion Of Internal supporting

confidence: 91%

Episodic autobiographical memory in amnestic mild cognitive impairment: What are the neural correlates?

Bastin¹,

Feyers²,

Jedidi³

et al. 2012

Human Brain Mapping

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Autobiographical memory in amnestic Mild Cognitive Impairment (aMCI) is characterized by impaired retrieval of episodic memories, but relatively preserved personal semantic knowledge.This study aimed to identify (via FDG-PET) the neural substrates of impaired episodic specificity of autobiographical memories in 35 aMCI patients compared with 24 healthy elderly controls.Significant correlations between regional cerebral activity and the proportion of episodic details in autobiographical memories from two life periods were found in specific regions of an autobiographical brain network. In aMCI patients, more than in controls, specifically episodic memories from early adulthood were associated with metabolic activity in the cuneus and in parietal regions. We hypothesized that variable retrieval of episodic autobiographical memories in our aMCI patients would be related to their variable capacity to reactivate specific sensoryperceptual and contextual details of early adulthood events linked to reduced (occipito-parietal) visual imagery and less efficient (parietal) attentional processes. For recent memories (last year), a correlation emerged between the proportion of episodic details and activity in lateral temporal regions and the temporo-parietal junction. Accordingly, variable episodic memory for recent events may be related to the efficiency of controlled search through general events likely to provide cues for the retrieval of episodic details and to the ability to establish a self perspective favouring recollection.

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Section: Neuropsychological Predictors Of the Proportion Of Internal supporting

confidence: 91%

Episodic autobiographical memory in amnestic mild cognitive impairment: What are the neural correlates?

Bastin¹,

Feyers²,

Jedidi³

et al. 2012

Human Brain Mapping

View full text Add to dashboard Cite

show abstract

“…Third, both patients are deficient in the ability to imagine or construct future events, a memory process that is thought to rely on the retrieval of episodic memories (Berryhill, Picasso, & Olson, submitted). These findings bolster the claims of fMRI studies linking PPC activity to LTM retrieval processes (reviewed in Cabeza, 2008;Wagner, Shannon, Kahn, & Buckner, 2005;Vilberg & Rugg, 2008) while calling into question the dissociation between short-term and long-term memory reported in prior studies of patients with unilateral damage to the parietal lobe (Shallice & Warrington, 1970).…”

Section: Generality Of Findingssupporting

confidence: 73%

The right parietal lobe is critical for visual working memory

2008

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Neuroimaging evidence suggests that the parietal lobe has an important role in memory retrieval, yet neuropsychology is largely silent on this topic. Recently, we reported that unilateral parietal lobe damage impairs various forms of visual working memory when tested by old/new recognition. Here, we investigate whether parietal lobe working memory deficits are linked to problems at retrieval. We tested two patients with bilateral parietal lobe damage in a series of visual working memory tasks that probed recall and old/new recognition. Stimuli were presented sequentially and several stimulus categories were tested. The results of these experiments show that parietal lobe damage disproportionately impairs old/new recognition as compared to cued recall across stimulus categories. The observed performance dissociation suggests that the posterior parietal lobe plays a particularly vital role in working memory retrieval.

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“…Regarding the inferior parietal cortex, some authors have suggested that it supports bottomup attention to memory, that is, the capture of attentional resources by relevant memory cues and/or recovered memories (Cabeza, 2008;Cabeza et al, 2008;Ciaramelli et al, 2008).…”

Section: Functional Connectivity During Associative Cermentioning

confidence: 99%

Item familiarity and controlled associative retrieval in Alzheimer's disease: An fMRI study

Genon

Collette

Feyers

et al. 2013

Cortex

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Typical Alzheimer's disease (AD) is characterized by an impaired form of associative memory, recollection, that includes the controlled retrieval of associations. In contrast, familiarity-based memory for individual items may sometimes be preserved in the early stages of the disease. This is the first study that directly examines whole brain regional activity during one core aspect of the recollection function: associative controlled episodic retrieval (CER), contrasted to item familiarity in AD patients. Cerebral activity related to associative CER and item familiarity in AD patients and healthy controls (HC) was measured with functional magnetic resonance imaging during a word-pair recognition task to which the process dissociation procedure was applied. Some patients had null CER estimates (AD-), whereas others did show some CER abilities (AD+), although significantly less than HC. In contrast, familiarity estimates were equivalent in the three groups. In AD+, as in controls, associative CER activated the inferior precuneus/posterior cingulate cortex (PCC). When performing group comparisons, no region was found to be significantly more activated during CER in HC than AD+ and vice versa. However, during associative CER, functional connectivity between this region and the hippocampus, the inferior parietal and dorsolateral prefrontal cortex (DLPFC) was significantly higher in HC than in AD+. In all three groups, item familiarity was related to activation along the intraparietal sulcus (IPS). In conclusion, whereas the preserved automatic detection of an old item (without retrieval of accurate word association) is related to parietal activation centred on the IPS, the inferior precuneus/PCC supports associative CER ability in AD patients, as in HC. However, AD patients have deficient functional connectivity during associative CER, suggesting that the residual recollection function in these patients might be impoverished by the lack of some recollection-related aspects such as autonoetic quality, episodic details and verification.

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Role of parietal regions in episodic memory retrieval: The dual attentional processes hypothesis

Cited by 280 publications

References 67 publications

Episodic autobiographical memory in amnestic mild cognitive impairment: What are the neural correlates?

Episodic autobiographical memory in amnestic mild cognitive impairment: What are the neural correlates?

The right parietal lobe is critical for visual working memory

Item familiarity and controlled associative retrieval in Alzheimer's disease: An fMRI study

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