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Daniel Schacter

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https://www.readbyqxmd.com/read/28633886/remembering-and-imagining-alternative-versions-of-the-personal-past
#1
Peggy L St Jacques, Alexis C Carpenter, Karl K Szpunar, Daniel L Schacter
Although autobiographical memory and episodic simulations recruit similar core brain regions, episodic simulations engage additional neural recruitment in the frontoparietal control network due to greater demands on constructive processes. However, previous functional neuroimaging studies showing differences in remembering and episodic simulation have focused on veridical retrieval of past experiences, and thus have not fully considered how retrieving the past in different ways from how it was originally experienced may also place similar demands on constructive processes...
June 17, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28626776/aging-and-the-resting-state-is-cognition-obsolete
#2
Karen L Campbell, Daniel L Schacter
Recent years have seen the rise in popularity of the resting state approach to neurocognitive aging, with many studies examining age differences in functional connectivity at rest and relating these differences to cognitive performance outside the scanner. There are many advantages to the resting state that likely contribute to its popularity and indeed, many insights have been gained from this work. However, there are also several limitations of the resting state approach that restrict its ability to contribute to the study of neurocognitive aging...
2017: Language, Cognition and Neuroscience
https://www.readbyqxmd.com/read/28603744/aging-and-the-resting-state-cognition-is-not-obsolete
#3
Karen L Campbell, Daniel L Schacter
No abstract text is available yet for this article.
2017: Language, Cognition and Neuroscience
https://www.readbyqxmd.com/read/28547677/episodic-and-semantic-content-of-memory-and-imagination-a-multilevel-analysis
#4
Aleea L Devitt, Donna Rose Addis, Daniel L Schacter
Autobiographical memories of past events and imaginations of future scenarios comprise both episodic and semantic content. Correlating the amount of "internal" (episodic) and "external" (semantic) details generated when describing autobiographical events can illuminate the relationship between the processes supporting these constructs. Yet previous studies performing such correlations were limited by aggregating data across all events generated by an individual, potentially obscuring the underlying relationship within the events themselves...
May 25, 2017: Memory & Cognition
https://www.readbyqxmd.com/read/28475696/scene-construction-and-relational-processing-separable-constructs
#5
Reece P Roberts, Daniel L Schacter, Donna Rose Addis
Imagining hypothetical events often entails the construction of a detailed mental simulation. Despite recent advances, debate still surrounds the fundamental constructive process underpinning simulations supported by the hippocampus. Palombo et al. (2016) report findings that suggest that scene construction drives hippocampal engagement during imagination. However, they fail to consider the findings of a previous study using an extremely similar manipulation that generated similar hippocampal findings, but was interpreted in terms of event specificity and relational processing (Addis et al...
May 5, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28471215/cognitive-aging-and-the-distinction-between-intentional-and-unintentional-mind-wandering
#6
Paul Seli, David Maillet, Daniel Smilek, Jonathan M Oakman, Daniel L Schacter
A growing number of studies have reported age-related reductions in the frequency of mind wandering. Here, at both the trait (Study 1) and state (Study 2) levels, we reexamined this association while distinguishing between intentional (deliberate) and unintentional (spontaneous) mind wandering. Based on research demonstrating age-accompanied deficits in executive functioning, we expected to observe increases in unintentional mind wandering with increasing age. Moreover, because aging is associated with increased task motivation, we reasoned that older adults might be more engaged in their tasks, and hence, show a more pronounced decline in intentional mind wandering relative to young adults...
June 2017: Psychology and Aging
https://www.readbyqxmd.com/read/28460272/mind-wandering-and-task-stimuli-stimulus-dependent-thoughts-influence-performance-on-memory-tasks-and-are-more-often-past-versus-future-oriented
#7
David Maillet, Paul Seli, Daniel L Schacter
Although many studies have indicated that participants frequently mind-wander during experimental tasks, relatively little research has examined the extent to which such thoughts are triggered by task stimuli (stimulus-dependent thoughts; SDTs) versus internally triggered (stimulus-independent thoughts; SITs). In the current experiment, we assessed differences in the frequency and characteristics of SDTs and SITs, as well as their associations with subsequent memory in young adults. Whereas frequency of SDTs (but not SITs) increased in a task with more meaningful stimuli, frequency of SITs (but not SDTs) increased in an easier task...
April 28, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28371688/what-did-you-have-in-mind-examining-the-content-of-intentional-and-unintentional-types-of-mind-wandering
#8
Paul Seli, Brandon C W Ralph, Mahiko Konishi, Daniel Smilek, Daniel L Schacter
It has recently been argued that researchers should distinguish between mind wandering (MW) that is engaged with and without intention. Supporting this argument, studies have found that intentional and unintentional MW have behavioral/neural differences, and that they are differentially associated with certain variables of theoretical interest. Although there have been considerable inroads made into the distinction between intentional/unintentional MW, possible differences in their content remain unexplored...
May 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28324695/imagining-the-future-the-core-episodic-simulation-network-dissociates-as-a-function-of-timecourse-and-the-amount-of-simulated-information
#9
Preston P Thakral, Roland G Benoit, Daniel L Schacter
Neuroimaging data indicate that episodic memory (i.e., remembering specific past experiences) and episodic simulation (i.e., imagining specific future experiences) are associated with enhanced activity in a common set of neural regions, often referred to as the core network. This network comprises the hippocampus, parahippocampal cortex, lateral and medial parietal cortex, lateral temporal cortex, and medial prefrontal cortex. Evidence for a core network has been taken as support for the idea that episodic memory and episodic simulation are supported by common processes...
May 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28276983/priming-not-inhibition-of-related-concepts-during-future-imagining
#10
Karen L Campbell, Roland G Benoit, Daniel L Schacter
Remembering the past and imagining the future both involve the retrieval of details stored in episodic memory and rely on the same core network of brain regions. Given these parallels, one might expect similar component processes to be involved in remembering and imagining. While a strong case can be made for the role of inhibition in memory retrieval, few studies have examined whether inhibition is also necessary for future imagining and results to-date have been mixed. In the current study, we test whether related concepts are inhibited during future imagining using a modified priming approach...
February 14, 2017: Memory
https://www.readbyqxmd.com/read/28276977/effects-of-aging-on-the-relation-between-episodic-simulation-and-prosocial-intentions
#11
Brendan Gaesser, Haley Dodds, Daniel L Schacter
Imagining helping a person in need can facilitate prosocial intentions. Here we investigated how this effect can change with aging. We found that, similar to young adults, older adults were more willing to help a person in need when they imagined helping that person compared to a baseline condition that did not involve helping, but not compared to a conceptual helping control condition. Controlling for heightened emotional concern in older adults revealed an age-related difference in the effect of imagining on willingness to help...
February 24, 2017: Memory
https://www.readbyqxmd.com/read/28244016/intentionality-and-meta-awareness-of-mind-wandering-are-they-one-and-the-same-or-distinct-dimensions
#12
Paul Seli, Brandon C W Ralph, Evan F Risko, Jonathan W Schooler, Daniel L Schacter, Daniel Smilek
Researchers have recently demonstrated that mind-wandering episodes can vary on numerous dimensions, and it has been suggested that assessing these dimensions will play an important role in our understanding of mind wandering. One dimension that has received considerable attention in recent work is the intentionality of mind wandering. Although it has been claimed that indexing the intentionality of mind wandering will be necessary if researchers are to obtain a coherent understanding of the wandering mind, one concern is that this dimension might be redundant with another, longstanding, dimension: namely, meta-awareness...
February 27, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/27989780/shifting-visual-perspective-during-retrieval-shapes-autobiographical-memories
#13
Peggy L St Jacques, Karl K Szpunar, Daniel L Schacter
The dynamic and flexible nature of memories is evident in our ability to adopt multiple visual perspectives. Although autobiographical memories are typically encoded from the visual perspective of our own eyes they can be retrieved from the perspective of an observer looking at our self. Here, we examined the neural mechanisms of shifting visual perspective during long-term memory retrieval and its influence on online and subsequent memories using functional magnetic resonance imaging (fMRI). Participants generated specific autobiographical memories from the last five years and rated their visual perspective...
March 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/27929343/autobiographical-memory-conjunction-errors-in-younger-and-older-adults-evidence-for-a-role-of-inhibitory-ability
#14
Aleea L Devitt, Lynette Tippett, Daniel L Schacter, Donna Rose Addis
Because of its reconstructive nature, autobiographical memory (AM) is subject to a range of distortions. One distortion involves the erroneous incorporation of features from one episodic memory into another, forming what are known as memory conjunction errors. Healthy aging has been associated with an enhanced susceptibility to conjunction errors for laboratory stimuli, yet it is unclear whether these findings translate to the autobiographical domain. We investigated the impact of aging on vulnerability to AM conjunction errors, and explored potential cognitive processes underlying the formation of these errors...
December 2016: Psychology and Aging
https://www.readbyqxmd.com/read/27918169/flexible-retrieval-when-true-inferences-produce-false-memories
#15
Alexis C Carpenter, Daniel L Schacter
Episodic memory involves flexible retrieval processes that allow us to link together distinct episodes, make novel inferences across overlapping events, and recombine elements of past experiences when imagining future events. However, the same flexible retrieval and recombination processes that underpin these adaptive functions may also leave memory prone to error or distortion, such as source misattributions in which details of one event are mistakenly attributed to another related event. To determine whether the same recombination-related retrieval mechanism supports both successful inference and source memory errors, we developed a modified version of an associative inference paradigm in which participants encoded everyday scenes comprised of people, objects, and other contextual details...
March 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/27601666/episodic-specificity-induction-impacts-activity-in-a-core-brain-network-during-construction-of-imagined-future-experiences
#16
Kevin P Madore, Karl K Szpunar, Donna Rose Addis, Daniel L Schacter
Recent behavioral work suggests that an episodic specificity induction-brief training in recollecting the details of a past experience-enhances performance on subsequent tasks that rely on episodic retrieval, including imagining future experiences, solving open-ended problems, and thinking creatively. Despite these far-reaching behavioral effects, nothing is known about the neural processes impacted by an episodic specificity induction. Related neuroimaging work has linked episodic retrieval with a core network of brain regions that supports imagining future experiences...
September 20, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27592332/false-memories-with-age-neural-and-cognitive-underpinnings
#17
REVIEW
Aleea L Devitt, Daniel L Schacter
As we age we become increasingly susceptible to memory distortions and inaccuracies. Over the past decade numerous neuroimaging studies have attempted to illuminate the neural underpinnings of aging and false memory. Here we review these studies, and link their findings with those concerning the cognitive properties of age-related changes in memory accuracy. Collectively this evidence points towards a prominent role for age-related declines in medial temporal and prefrontal brain areas, and corresponding impairments in associative binding and strategic monitoring...
October 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27576065/biospecimen-user-fees-global-feedback-on-a-calculator-tool
#18
Lise A M Matzke, Sindy Babinszky, Alex Slotty, Anna Meredith, Tania Castillo-Pelayo, Marianne K Henderson, Daniel Simeon-Dubach, Brent Schacter, Peter H Watson
The notion of attributing user fees to researchers for biospecimens provided by biobanks has been discussed frequently in the literature. However, the considerations around how to attribute the cost for these biospecimens and data have, until recently, not been well described. Common across most biobank disciplines are similar factors that influence user fees such as capital and operating costs, internal and external demand, and market competition. A biospecimen user fee calculator tool developed by CTRNet, a tumor biobank network, was published in 2014 and is accessible online at www...
February 2017: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/27551087/semantic-representations-in-the-temporal-pole-predict-false-memories
#19
Martin J Chadwick, Raeesa S Anjum, Dharshan Kumaran, Daniel L Schacter, Hugo J Spiers, Demis Hassabis
Recent advances in neuroscience have given us unprecedented insight into the neural mechanisms of false memory, showing that artificial memories can be inserted into the memory cells of the hippocampus in a way that is indistinguishable from true memories. However, this alone is not enough to explain how false memories can arise naturally in the course of our daily lives. Cognitive psychology has demonstrated that many instances of false memory, both in the laboratory and the real world, can be attributed to semantic interference...
September 6, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27496024/tracking-the-emergence-of-memories-a-category-learning-paradigm-to-explore-schema-driven-recognition
#20
Felipe De Brigard, Timothy F Brady, Luka Ruzic, Daniel L Schacter
Previous research has shown that prior knowledge structures or schemas affect recognition memory. However, since the acquisition of schemas occurs over prolonged periods of time, few paradigms allow the direct manipulation of schema acquisition to study their effect on memory performance. Recently, a number of parallelisms in recognition memory between studies involving schemas and studies involving category learning have been identified. The current paper capitalizes on these findings and offers a novel experimental paradigm that allows manipulation of category learning between individuals to study the effects of schema acquisition on recognition...
January 2017: Memory & Cognition
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