When pandemics hit communities, women are bound to suffer as most of the responsibilities of ensuring food security lie on them. This article assesses the impact of the COVID-19 pandemic on the role that church-going women play in food provision. The qualitative study used interviews and focus group discussions to examine the toll of the pandemic-induced restrictions, especially with regard to their disruption of activities that ensure the provision of food for the family. They sought to identify how an environment (...) as restrictive as the one that was imposed during the COVID-19 pandemic affects those largely responsible for food provision in urban Marondera – the women, in this case. The focus was extended to factor in how disasters and pandemics affect women and detract from their normative food procurement and provision roles in marginal societies and how these effects can be mitigated to allow women to carry on with their roles even in restrictive environments. This research was motivated by the recent COVID-19-imposed regulations that restricted the movement of people, restrictions that have only recently been relaxed and (in some cases) removed. We also sought to establish how gender roles are played out, together with whether they are exacerbated by pandemics, and in what ways these pandemics result in higher workloads on women. By utilising the Africana womanist theory, the study analysed women roles in food provision and food security in their societies within the restrictive environments of the pandemics.Contribution: This study concluded that there are gender inequalities that are exacerbated by these pandemics that result in higher workloads for women. It foregrounded how existing gender inequalities were exacerbated by the pandemic, resulting in higher workloads on women. It therefore recommended that women should form empowerment groups to help focus attention on food provision to mitigate challenges women face in this role. Finally, we averred that there ought to be consultation and participation of women on issues to do with pandemics to allow for their full and productive participation in critical roles of providing food. (shrink)

The article attempts to account for some conversational strategies for the thematic construction of discourse in a 30,000 word corpus of contemporary oral French. The sub-genre studied is that of the ‘memory-activation interview’, a speech situation, or ‘activity-type’ in which dialogues and meaning are co-constructed with the purpose of reviving memories. The general analytical framework is that of ‘interactional sociolinguistics’ as defined by Schiffrin, in which the more specific aspects of ratification, legitimization and modes of contribution are redefined and (...) diversified. Also central in the memory-activation process is the interviewer%'s role which, although not of a therapeutical nature is shown as being fully involved both at macro- and micro- levels. The article also tries to widen the range of the currently available tools for the analysis of speech seen as a thematic–rhematic process through the alternation of speech turns. The notion of thematic-discursive perimeter is introduced to account for thematic consistency. (shrink)

The context of the target article is delimited again, underlining the intended locationof the argument in the bottomup hierarchy of brain study. The central message is that collective delay activity distributions (reverberations) in cortical modules extend the role of a spike (a potentialinformation carrier across long distances) to an active memory of structured, learned information that can be carried across long time intervals. Moreover, the population code of the reverberations makes them readable down the cortical processing stream. Most (...) of the critical comments are then interpreted and addressed in relation to misreading of the proper context. The price for the limitation of the context (in cognitive, behavioral, and computational terms) is compared with the advantages of a clear, direct contact with experiment on the one hand and with a well controlled body of modeling and analysis on the other. (shrink)

Lockean views of personal identity maintain that we are essentially persons who persist diachronically by virtue of being psychologically continuous with our former selves. In this article, I present a novel objection to this variant of psychological accounts, which is based on neurophysiological characteristics of the brain. While the mental states that constitute said psychological continuity reside in the cerebral hemispheres, so that for the former to persist only the upper brain must remain intact, being conscious additionally requires that a (...) structure originating in the brainstem—the ascending reticular activating system—be functional. Hence, there can be situations in which even small brainstem lesions render individuals irreversibly comatose and thus forever preclude access to their mental states, while the neural correlates of the states themselves are retained. In these situations, Lockeans are forced to regard as fulfilled their criterion of diachronic persistence since psychological continuity, as they construe it, is not disrupted. Deeming an entity that is never again going to have any mental experiences to be a person, however, is an untenable position for a psychological account to adopt. In their current form, Lockean views of personal identity are therefore incompatible with human neurophysiology. (shrink)

Goal‐directed cognition is often discussed in terms of specialized memory structures like the “goal stack.” The goal‐activation model presented here analyzes goal‐directed cognition in terms of the general memory constructs of activation and associative priming. The model embodies three predictive constraints: (1) the interference level, which arises from residual memory for old goals; (1) the strengthening constraint, which makes predictions about time to encode a new goal; and (3) the priming constraint, which makes predictions about the role (...) of cues in retrieving pending goals. These constraints are formulated algebraically and tested through simulation of latency and error data from the Tower of Hanoi, a means‐ends puzzle that depends heavily on suspension and resumption of goals. Implications of the model for understanding intention superiority, postcompletion error, and effects of task interruption are discussed. (shrink)

High temporal resolution event-related brain potential and electroencephalographic coherence studies of the neural substrate of short-term storage in working memory indicate that the sustained coactivation of both prefrontal cortex and the posterior cortical systems that participate in the initial perception and comprehension of the retained information are involved in its storage. These studies further show that short-term storage mechanisms involve an increase in neural synchrony between prefrontal cortex and posterior cortex and the enhanced activation of long-term memory representations (...) of material held in short-term memory. This activation begins during the encoding/comprehension phase and evidently is prolonged into the retention phase by attentional drive from prefrontal cortex control systems. A parsimonious interpretation of these findings is that the long-term memory systems associated with the posterior cortical processors provide the necessary representational basis for working memory, with the property of short-term memory decay being primarily due to the posterior system. In this view, there is no reason to posit specialized neural systems whose functions are limited to those of short-term storage buffers. Prefrontal cortex provides the attentional pointer system for maintaining activation in the appropriate posterior processing systems. Short-term memory capacity and phenomena such as displacement of information in short-term memory are determined by limitations on the number of pointers that can be sustained by the prefrontal control systems. Key Words: coherence; event-related potentials; imaging; long-term memory; memory; short-term memory; working memory. (shrink)

There is a popular hypothesis that performance on implicit and explicit memory tasks reflects 2 distinct memory systems. Explicit memory is said to store those experiences that can be consciously recollected, and implicit memory is said to store experiences and affect subsequent behavior but to be unavailable to conscious awareness. Although this division based on awareness is a useful taxonomy for memory tasks, the authors review the evidence that the unconscious character of implicit memory (...) does not necessitate that it be treated as a separate system of human memory. They also argue that some implicit and explicit memory tasks share the same memory representations and that the important distinction is whether the task (implicit or explicit) requires the formation of a new association. The authors review and critique dissociations from the behavioral, amnesia, and neuroimaging literatures that have been advanced in support of separate explicit and implicit memory systems by highlighting contradictory evidence and by illustrating how the data can be accounted for using a simple computational memory model that assumes the same memory representation for those disparate tasks. (shrink)

Virtual reality (VR) through a head-mounted display (HMD) can provide new experiences. However, it remains unclear how the characteristics of HMDs affect users’ memory. To use HMDs more effectively and appropriately in several applied fields, including education, it is necessary to clarify what characteristics of HMDs affect users’ memory. A head-tracking function mounted on an HMD helps to detect the user’s head direction to enable a simulation experience akin to the real world. When we experience a simulation on (...) an HMD, we actively perceive the visual world. In this study, we assessed how active/passive viewing affects users’ memory of VR content. We conducted a psychological experiment in which participants watched a movie on an HMD. In the active viewing condition, the presented view changed depending on the participant’s head direction. In the passive viewing condition, the presented view was a recorded movie that was shown to the participants in the active viewing condition. All participants took a memory test about the content presented in the movie on the day of viewing and two weeks later. The results showed that performance on the memory test in the active viewing condition was significantly lower than that in the passive viewing condition after two weeks. This result indicated that active viewing in VR inhibited users’ memory compared to passive viewing. The current study contributes to the development of new VR techniques, such as educational learning. (shrink)

The hippocampal formation is known for its importance in conscious, declarative memory. Here, we report neuroimaging evidence in humans for an additional role of the hippocampal formation in nonconscious memory. We maskedly presented combinations of faces and written professions such that subjects were not aware of them. Nevertheless, the masked presentations activated many of the brain regions that unmasked presentations of these stimuli did. To induce a nonconscious retrieval of the faces and face-associated occupational information, subjects were instructed (...) to view the previously masked faces and to guess the professional category of each person—academic, artist, and workman. Guessing the professional category of previously masked versus new faces activated the left and right hippocampal formation and right perirhinal cortex as well as bilateral fusiform areas and fronto-temporal areas known to mediate the retrieval of semantic information. These activations within the semantic processing system suggest that conceptual knowledge acquired during masking was nonconsciously retrieved. Our data provide clues to an analogous role of the hippocampus in conscious and nonconscious memory. (shrink)

Performance on working memory (WM) tasks may partially be supported by long-term memory (LTM) processing. Hence, brain activation recently being implicated in WM may actually have been driven by (incidental) LTM formation. We examined which brain regions actually support successful WM processing, rather than being confounded by LTM processes, during the maintenance and probe phase of a WM task. We administered a four-pair (faces and houses) associative delayed-match-to-sample (WM) task using event-related fMRI and a subsequent associative recognition LTM (...) task, using the same stimuli. This enabled us to analyze subsequent memory effects for both the WM and the LTM test by contrasting correctly recognized pairs with incorrect pairs for either task. Critically, with respect to the subsequent WM effect, we computed this analysis exclusively for trials that were forgotten in the subsequent LTM recognition task. Hence, brain activity associated with successful WM processing was less likely to be confounded by incidental LTM formation. The subsequent LTM effect, in contrast, was analyzed exclusively for pairs that previously had been correctly recognized in the WM task, disclosing brain regions involved in successful LTM formation after successful WM processing. Results for the subsequent WM effect showed no significantly activated brain areas for WM maintenance, possibly due to an insensitivity of fMRI to mechanisms underlying active WM maintenance. In contrast, a correct decision at WM probe was linked to activation in the “retrieval success network” (anterior and posterior midline brain structures). The subsequent LTM analyses revealed greater activation in left dorsolateral prefrontal cortex and posterior parietal cortex in the early phase of the maintenance stage. No supra-threshold activation was found during the WM probe. Together, we obtained clearer insights in which brain regions support successful WM and LTM without the potential confound of the respective memory system. (shrink)

Working-memory retention as activated long-term memory fails to capture orchestrated processing and storage, the hallmark of the concept of working memory. The event-related potential (ERP) data are compatible with working memory as a mental workspace that holds and manipulates information on line, which is distinct from long-term memory, and deals with the products of activated traces from stored knowledge.

The identity of working-memory and long-term memory representations follows from many lines of evidence. However, the data provided by Ruchkin et al. are hardly compelling, as they make unproved assumptions about hypothetical generators. We cite studies from our lab in which congruent slow-wave topographies were found for short-term and long-term memory tasks, strongly suggesting that both activate identical cell assemblies.

The developmental programs of eukaryotic organisms involve the programmed transcription of genes. A characteristic gene expression pattern is established and preserved in each different cell type. Therefore, gene activation at a particular time and its maintenance during cell division are significant for cellular differentiation and individual development. Although many studies have sought to explain the molecular mechanisms of gene expression regulation, the mechanism through which gene expression states are inherited during cell division has not been fully elucidated yet. This review (...) illustrates the general principles and the complexities involved in the establishment and maintenance of active transcription through cell cycles. It focuses on the most‐recent findings about the ways in which molecular memory marks for active transcription are coordinated with cell cycle events, such as replication, mitosis and nuclear organization, to mediate transcription memory across cell division events, which may establish a unifying memory process of active transcription. BioEssays 27:1239–1245, 2005. © 2005 Wiley Periodicals, Inc. (shrink)

The target article interprets current psychological research on everyday memory in terms of a correspondence metaphor. This metaphor is based on a reduction of everyday memory to autobiographical and eyewitness memory. This commentary focuses on everyday memory as it functions in activity. Viewed from this perspective, the joining of everyday memory to a correspondence metaphor is problematic. A more natural way to frame the processes of everyday memory is in terms of context, practice, and (...) pragmatics. (shrink)

Fronto-parietal activity has been frequently observed in fMRI and PET studies of attention, working memory, and episodic memory retrieval. Several recent fMRI studies have also reported fronto-parietal activity during conscious visual perception. A major goal of this review was to assess the degree of anatomical overlap among activation patterns associated with these four functions. A second goal was to shed light on the possible cognitive relationship of processes that relate to common brain activity across functions. For all reviewed (...) functions we observed a consistent and overlapping pattern of brain activity. The overlap was most pronounced for the bilateral parietal cortex , and dorsolateral prefrontal cortex . The common fronto-parietal activity will be discussed in terms of processes related to integration of distributed representations in the brain. (shrink)

We focus on the functional specificity of theta and alpha oscillations and show that theta is related to working memory, whereas alpha is related to semantic long-term memory. Recent studies, however, indicate that alpha oscillations also play an important role during short-term memory retention and retrieval. This latter finding provides support for the basic hypothesis suggested by Ruchkin et al.

Background: Neurofeedback training has recently been proposed as a valuable technique for cognitive enhancement and psychiatric amelioration. However, effect of NFT of alpha activity on memory is controversial. The current study analyzed previous works in terms of randomized and blinded analyses, training paradigms, and participant characteristics to validate the efficacy of alpha NFT on memory in a healthy population.Objectives: A systematic meta-analysis of studies with randomized controlled trials was performed to explore the effect of alpha NFT on working (...) memory and episodic memory in a healthy population.Methods: We searched PubMed, Embase, and Cochrane Library from January 1, 1999, to November 30, 2019. Previous studies were evaluated with the Cochrane risk of bias. A meta-analysis calculating absolute weighted standardized mean difference using random-effects models was employed. Heterogeneity was estimated using I2 statistics. Funnel plots and Egger's test were performed to evaluate the quality of evidence.Results: Sixteen studies with 217 healthy participants in the control group and 210 participants in the alpha group met the eligibility criteria. Alpha NFT studies with WM measures presented little publication bias, and 5 of 7 domains in the Cochrane RoB exhibited a low risk of bias. The overall effect size from 14 WM studies was 0.56. Six EM studies exhibited an effect size of 0.77.Conclusion: Meta-analysis results suggest that alpha NFT seems to have a positive effect on the WM and EM of healthy participants. Future efforts should focus on the neurophysiological mechanisms of alpha NFT in memory. (shrink)

Memory is the least studied dimension of Augustine's psychological trinity of memory-intellect-will. This book explores the theme of 'memory' in Augustine's works, tracing its philosophical and theological significance. The first part explores the philosophical history of memory in Plato, Aristotle, and Plotinus. The second part shows how Augustine inherits this theme and treats it in his early writings. The third and final part seeks to show how Augustine's theological understanding of Christ draws on and resolves tensions (...) in the theme of memory. The place of memory in the theological anthropology of Augustine has its roots in the Platonic epistemological tradition. Augustine actively engages with this tradition in his early writings in a manner that is both philosophically sophisticated and doctrinally consistent with his later, more overtly theological writings. From the Cassiacum dialogues through De musica, Augustine points to the central importance of memory: he examines the power of the soul as something that mediates sense perception and understanding, while explicitly deferring a more profound treatment of it until Confessions and De trinitate. In these two texts, memory is the foundation for the location of the Imago Dei in the mind. It becomes the basis for the spiritual experience of the embodied creature, and a source of the profound anxiety that results from the sensed opposition of human time and divine time (aeterna ratio). This tension is contained and resolved, to a limited extent, in Augustine's Christology, in the ability of a paradoxical incarnation to unify the temporal and the eternal (in Confessions 11 and 12), and the life of faith (scientia) with the promised contemplation of the divine (sapientia, in De trinitate 12-14). (shrink)

Cognitive Reserve, according to a recent consensus definition of the NIH-funded Reserve and Resilience collaboratory,1 is constituted by any mechanism contributing to cognitive performance beyond, or interacting with, brain structure in the widest sense. To identity multivariate activation patterns fulfilling this postulate, we investigated a verbal Sternberg fMRI task and imaged 181 people with age coverage in the ranges 20–30 and 55–70. Beyond task performance, participants were characterized in terms of demographics, and neuropsychological assessments of vocabulary, episodic memory, perceptual (...) speed, and abstract fluid reasoning. Participants studied an array of either one, three, or six upper-case letters for 3 s, then a blank fixation screen was presented for 7 s, to be probed with a lower-case letter to which they responded with a differential button press whether the letter was part of the studied array or not. We focused on identifying maintenance-related activation patterns showing memory load increases in pattern score on an individual participant level for both age groups. We found such a pattern that increased with memory load for all but one person in the young participants, and such a pattern for all participants in the older group. Both patterns showed broad topographic similarities; however, relationships to task performance and neuropsychological characteristics were markedly different and point to individual differences in Cognitive Reserve. Beyond the derivation of group-level activation patterns, we also investigated the inter-subject spatial similarity of individual working memory rehearsal patterns in the older participants’ group as a function of neuropsychological and task performance, education, and mean cortical thickness. Higher task accuracy and neuropsychological function was reliably associated with higher inter-subject similarity of individual-level activation patterns in older participants. (shrink)

The differential activation hypothesis (DAH; Teasdale, 1988) proposes that individuals who are vulnerable to depression can be distinguished from non-vulnerable individuals by the degree to which negative thoughts and maladaptive cognitive processes are activated during sad mood. While retrieval of negative autobiographical memories is noted as one such process, the model does not articulate a role for deficits in recalling positive memories. Two studies were conducted to compare the autobiographical memory characteristics of never-depressed and formerly depressed individuals following a (...) sad mood induction. In Study 1, features of negative memories of never-depressed and formerly depressed individuals did not differ, either in neutral or sad mood. For positive memories, groups did not differ in neutral mood, but following a sad mood induction, formerly depressed individuals rated their positive memories as less vivid than their never-depressed counterparts. Study 2 examined positive autobiographical memory features more comprehensively and replicated the finding that in a sad mood formerly depressed individuals recalled less vivid positive memories than never-depressed controls. These findings suggest that the phenomenological features of positive memories could represent an important factor in depressive vulnerability, and, more broadly, that depression may be associated with a deficit in the processing of positive material. (shrink)

In this discourse analysis of how memory acquires and is acquired in interview exchanges, we investigate remembering as a category-bound activity, both a tensional and collaborative process of moral ratification of `survivor' as membership category. We propose the term re-membering to mean piecing together possible versions of survivor experiences in talk; these versions, offered by respondents and elicited by interviewers through questioning strategies, are epistemic claims to acquire the Holocaust as memory, or institutional History. We explore the accounting (...) dynamic of interviewer and respondent, the relationship of ownership between survivors and memory, and the duties and moral obligations of the category `Holocaust survivor' that can be shown through the interviews of survivors and their adult daughters. (shrink)

There is remarkable agreement between Ruchkin et al.'s psychophysiological views and my own model, based on developmental-experimental evidence, of working memory as activated long-term memory (LTM). I construe subvocal rehearsal as an operative scheme that maintains order information and demands attentional resources. Encoding and retrieving operations also demand attention. Another share of resources is used for keeping activated specific LTM representations.

We challenge Ruchkin et al.'s claim in reducing short-term memory (STM) to the active part of long-term memory (LTM), by showing that their data cannot rule out the possibility that activation of posterior brain regions could also reflect the contribution of a verbal STM buffer.