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1.
Mem Cognit ; 2024 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-38570437

RESUMO

Memory for truth and falsity has recently been investigated from the perspective of the dual-recollection theory, showing better context and target recollection for truth than falsity. In this paper, we examine whether these memory effects obtained for true statements are similar to the value effect, whereby true statements are given higher priority in encoding. For this purpose, we implemented value-directed remembering (VDR) into the conjoint-recognition paradigm. In our first experiment, the primary goal was to verify how VDR influences the processes defined by dual-recollection theory. At study, prioritized/important items were linked to higher numerical values (e.g., 10), while unimportant ones had lower values (e.g., 1). At test, the participants' task was to recognize whether a particular sentence was important, unimportant, or new. We found that both context and target recollection were better for important items. In the second experiment, the main goal was to study the combined effects of importance and veracity on memory. In the between-subjects design, participants were monetarily rewarded for memorizing true or false sentences. The results demonstrated differences in the ability to prioritize truth over falsity. Specifically, we found a substantial increase in context recollection for prioritized true information but not for prioritized false information. Moreover, we found higher context recollection for true than false sentences in the true-prioritized condition, but not in the false-prioritized condition. These results indicated that people are able to prioritize true information better than false, and suggested that memory for truth may be a special case of the value effect.

2.
JMIR Form Res ; 8: e52096, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38300691

RESUMO

BACKGROUND: Qualitative health services research often relies on semistructured or in-depth interviews to develop a deeper understanding of patient experiences, motivations, and perspectives. The quality of data gathered is contingent upon a patient's recall capacity; yet, studies have shown that recall of medical information is low. Threats to generating rich and detailed interview data may be more prevalent when interviewing older adults. OBJECTIVE: We developed and studied the feasibility of using a tool, Remembering Healthcare Encounters Visually and Interactively (REVISIT), which has been created to aid the recall of a specific telemedicine encounter to provide health services research teams with a visual tool, to improve qualitative interviews with older adults. METHODS: The REVISIT visual appointment summary was developed to facilitate web-based interviews with our participants as part of an evaluation of a geriatric telemedicine program. Our primary aims were to aid participant recall, maintain focus on the index visit, and establish a shared understanding of the visit between participants and interviewers. The authors' experiences and observations developing REVISIT and using it during videoconference interviews (N=16) were systematically documented and synthesized. We discuss these experiences with REVISIT and suggest considerations for broader implementation and future research to expand upon this preliminary work. RESULTS: REVISIT enhanced the interview process by providing a focus and catalyst for discussion and supporting rapport-building with participants. REVISIT appeared to support older patients' and caregivers' recollection of a clinical visit, helping them to share additional details about their experience. REVISIT was difficult to read for some participants, however, and could not be used for phone interviews. CONCLUSIONS: REVISIT is a promising tool to enhance the quality of data collected during interviews with older, rural adults and caregivers about a health care encounter. This novel tool may aid recall of health care experiences for those groups for whom it may be more challenging to collect accurate, rich qualitative data (eg, those with cognitive impairment or complex medical care), allowing health services research to include more diverse patient experiences.

3.
Artigo em Inglês | MEDLINE | ID: mdl-36661572

RESUMO

While aging has been associated with decreased retrieval of episodic memory details, subjective ratings about memory quality seem to remain stable. This suggests that subjective memory judgments are based on different information according to age. Here, we tested the hypothesis that older people would rather base their subjective judgments on the retrieval of personal elements (such as emotions and thoughts), whereas younger people would rather base their judgments on the retrieval of event-related elements (such as time, place, and perceptual details). Sixty participants (20 to 79 years old) performed eight actions in a virtual apartment and were then asked to verbally recall each action with a maximum of associated elements and to rate the subjective quality of their memories. The elements reported were classified into "person-related" and "event-related" categories. Executive functions, memory performance on traditional memory tasks, and subjects' perception of memory functioning were also evaluated. Results revealed that aging was associated with reduced retrieval of event-related elements, which was explained by decreasing executive resources. However, age did not affect the retrieval of person-related elements, and the subjective memory judgments of older people were not based on these elements to a greater extent than those of younger people. Finally, our results highlight the value of virtual reality (VR) in memory evaluations since subjects' perception of memory functioning was associated with their performance in the VR task but not in traditional memory tasks.


Assuntos
Memória Episódica , Realidade Virtual , Humanos , Idoso , Rememoração Mental , Envelhecimento/psicologia , Emoções
4.
Top Cogn Sci ; 16(2): 282-301, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36780338

RESUMO

Collaborative recall synchronizes downstream individual retrieval processes, giving rise to collective organization. However, little is known about whether particular stimulus features (e.g., semantic relatedness) are necessary for constructing collective organization and how group dynamics (e.g., reconfiguration) moderates it. We leveraged novel quantitative measures and a rich dataset reported in recent articles to address, (a) whether collective organization emerges even for semantically unrelated material and (b) how group reconfiguration-changing partners from one recall to the next-influences collective organization. Participants studied unrelated words and completed three consecutive recalls in one of three conditions: Always recalling individually (III), collaborating with the same partners twice before recalling alone (CCI), or collaborating with different group members during two initial recalls, before recalling alone (CRI). Collective organization increased significantly following any collaboration (CCI or CRI), relative to "groups" who never collaborated (III). Interestingly, collaborating repeatedly with the same partners (CCI) did not increase collective organization compared to reconfigured groups, irrespective of the reference group structure (from Recall 1 or 2). Individuals, however, did tend to base their final individual retrieval on the most recent group recall. We discuss how the fundamental processes that underlie dynamic social interactions align the cognitive processes of many, laying the foundation for other collective phenomena, including shared biases, attitudes, and beliefs.


Assuntos
Comportamento Cooperativo , Rememoração Mental , Humanos , Estrutura de Grupo , Interação Social
5.
Neuropsychologia ; 191: 108732, 2023 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-37951386

RESUMO

Although collaborative remembering is a ubiquitous feature of human beings, its underlying neurocognitive process is not well understood. Here we hypothesized that interpersonal neural synchronization (INS) might underlie collaborative remembering, while real collaboration as opposed to other modes of offline collaboration should enhance INS and facilitate mnemonic similarity. To test these hypotheses, brain activity was measured simultaneously from two individuals who performed a group-based selective retrieval practice task either in a real collaboration or in a pseudo-collaboration, i.e., an individual performed the task together with a pre-recorded audio. The results showed that the memory of two individuals converged to a greater level than the chance level in real collaboration but not in control condition. Moreover, collaborative remembering was associated with significant INS increase in the prefrontal cortex (PFC) relative to the baseline in the real collaboration only. Additionally, INS increase was significantly greater in the real collaboration than in control condition. Finally, the PFC's INS increase was positively correlated with and could accurately predict the level of mnemonic similarity in real collaboration. These findings support the hypothesis that the enhanced INS underlies the cognitive process of collaborative remembering.


Assuntos
Memória , Rememoração Mental , Humanos , Córtex Pré-Frontal , Relações Interpessoais
6.
Artigo em Inglês | MEDLINE | ID: mdl-37594007

RESUMO

While often showing associative memory deficits, there may be instances when older adults selectively remember important associative information. We presented younger and older adults with children they would be hypothetically babysitting, and each child had three preferences: a food they like, a food they dislike, and a food they are allergic to and must avoid. In Experiment 1, all foods associated with each child were simultaneously presented while in Experiments 2 and 3, participants self-regulated their study of the different preferences for each child. We were interested in whether people, particularly older adults who often display associative memory impairments, can prioritize the most important information with consequences for forgetting (i.e., allergies), especially with increased task experience. Overall, compared with younger adults, older adults were better at selectively studying and recalling the children's allergies relative to the other preferences, and these patterns increased with task experience. Together, the present results suggest that both younger and older adults can employ strategies that enhance the recall of important information, illustrating responsible remembering. Specifically, both younger and older adults can learn to self-assess and prioritize the information that they need to remember, and despite memory deficits, older adults can learn to employ strategies that enhance the recall of important information, using metacognition and goal-directed remembering to engage in responsible remembering.

7.
Mem Cognit ; 51(7): 1511-1526, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37458967

RESUMO

Little is understood about how people strategically process and remember important but complex information, such as sentences. In the current study, we asked whether people can effectively prioritize memory for sentences as a function of their relative importance (operationalized as a reward point value) and whether they do so, in part, by changing their sentence processing strategies when value information is available in advance. We adapted the value-directed remembering paradigm (Castel, Psychol Learn Motiv 48:225-270, 2007) for sentences that varied in constraint and predictability. Each sentence was associated with a high or low value for subsequent free recall (whole sentence) and recognition (sentence-final words) tests. Value information appeared after or before each sentence as a between-subject manipulation. Regardless of condition, we observed that high-value sentences were recalled more often than low-value sentences, showing that people can strategically prioritize their encoding of sentences. However, memory patterns differed depending on when value information was available. Recall for high-value sentences that ended unexpectedly (and therefore violated one's predictions) was reduced in the Before compared to the After condition. Before condition participants also showed a greater tendency to false alarm to lures (words that were the predicted - but not obtained - ending) from strongly constraining sentences. These observations suggest that when people try to prioritize sentence-level information that they know is valuable, the reading strategies they employ may paradoxically lead to worse memory.


Assuntos
Idioma , Leitura , Humanos , Rememoração Mental , Aprendizagem , Reconhecimento Psicológico
8.
Memory ; 31(8): 1074-1088, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37279188

RESUMO

ABSTRACTIn reward-based learning and value-directed remembering, many different value structures for the to-be-remembered information have been used by researchers. I was interested in whether different scoring structures used in a value-directed remembering task impact measures of memory selectivity. Participants studied lists of words paired with point values and some lists included words paired with values ranging from 1 to 20, 1 to 10 (repeating twice), either a high value (10 points) or a low value (1 point), and either a high value (10 points), a medium value (5 points) or a low value (1 point). Results suggest that (1) in tests of free recall, if using a continuous value scale, the range of values matters in terms of selective memory, (2) analysing the selectivity index can yield different results than modelling item-level recall using point values (and the latter may be a preferable approach), (3) measures of selectivity using different value structures may lack construct validity when testing memory via recognition tests, and (4) the effect of value on memory is much larger on recall than recognition tests. Thus, I suggest that researchers carefully consider and justify the value structure used when examining selective memory for valuable information in list learning tasks.


Assuntos
Aprendizagem , Rememoração Mental , Humanos , Recompensa
9.
Memory ; 31(6): 864-870, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37129577

RESUMO

ABSTRACTThis study aimed to validate a French version of the Autobiographical Recollection Test (ART), a 21-item self-report questionnaire developed by Berntsen, D., Hoyle, R. H., & Rubin, D. C. (2019; The Autobiographical Recollection Test (ART): A measure of individual differences in autobiographical memory. Journal of Applied Research in Memory and Cognition, 8(3), 305-318) examining the subjective quality people attribute to their autobiographical memories. It measures seven distinct but correlated dimensions of memories' quality varying between individuals: vividness, narrative coherence, reliving, rehearsal, visual imagery, scene, and life-story relevance. 373 participants aged from 18 to 87 years old were invited to complete the questionnaire by rating on a 7-point Likert scale the degree to which they agree with each item. Demographic data and information about their perception of their memory functioning and satisfaction were also collected. Confirmatory factor analysis confirmed the initial seven-factor structure of the ART. Moreover, results showed desirable psychometric properties, with good internal consistency (.94) and test-retest reliability (.83). This scale was also correlated with participants' perception of memory functioning in daily life. However, there was no correlation with age, confirming prior studies showing that the subjective quality of autobiographical memories does not decline with age. This study thus provides proof of the good psychometric properties of the French version of the ART and promotes its use to explore the subjective quality of autobiographical memories in clinical populations.


Assuntos
Memória Episódica , Rememoração Mental , Humanos , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Reprodutibilidade dos Testes , Cognição , Inquéritos e Questionários
10.
J Anal Psychol ; 68(2): 327-336, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37012655

RESUMO

Enforced disappearance represents the quintessence of human rights violations with a strong psychological component. Bodies vanishing have a deterrent effect by terrorizing and paralyzing the entire society. However, the absence of those bodies is overly present in the inner experience of the families of the disappeared, who are victims in their turn. A state of severe psychological deterioration affects the relatives of the disappeared: depression, anxiety, powerlessness, guilt, post-traumatic stress disorder, inability to mourn, even suicide are the consequences of the unbearable uncertainty about the fate of the loved one. But the disappeared persons, notwithstanding the absence of their bodies, continue to be more present than ever in the inner experience of those who have loved them. For the families of the disappeared, to regain psychological equilibrium is a fine balance between the need to remember and the necessity to forget. The author affirms that, at a social and political level, to cultivate a collective memory of enforced disappearance is an ethical duty which validates the actual occurrence of the atrocities, helps prevent repetition and alleviates the transgenerational transmission of trauma.


Les disparitions forcées représentent la quintessence des violations des droits humains avec une forte composante psychologique. Les corps que l'on ne retrouve pas sont un moyen de dissuasion qui opère en terrorisant et paralysant la société toute entière. L'absence de ces corps est excessivement présente dans l'expérience intérieure des familles de ces disparus ; elles deviennent des victimes à leur tour. Un état de détérioration psychologique aigu affecte les membres de la famille du disparu : dépression, angoisse, sentiment d'impuissance, culpabilité, syndrome post-traumatique, incapacité à faire le deuil, et même le suicide sont les conséquences de l'insupportable incertitude concernant le destin de la personne aimée. Les personnes disparues, du fait de l'absence de leur dépouille, continuent d'être plus que jamais présentes dans l'expérience intérieure de ceux qui les ont aimées. Pour les familles des disparus, retrouver une stabilité psychologique se trouve dans un équilibre délicat entre le besoin de se souvenir et la nécessité d'oublier. L'auteur soutient qu'au niveau social et politique, cultiver une mémoire collective des disparitions forcées est un devoir éthique qui confirme que des atrocités ont bien eu lieu, qui aide à en prévenir la répétition et qui allège la transmission transgénérationnelle du traumatisme.


La desaparición forzada representa la quintaesencia de las violaciones de derechos humanos con un fuerte componente psicológico. La desaparición de cuerpos tiene un efecto disuasorio al aterrorizar y paralizar a toda la sociedad. Sin embargo, la ausencia de esos cuerpos está excesivamente presente en la experiencia interior de las familias de los desaparecidos, que son víctimas a su vez. Un estado de grave deterioro psicológico afecta a los familiares de los desaparecidos: depresión, ansiedad, impotencia, culpabilidad, trastorno de estrés postraumático, incapacidad para el duelo, incluso suicidio son las consecuencias de la insoportable incertidumbre sobre la suerte del ser querido. Pero las personas desaparecidas, a pesar de la ausencia de sus cuerpos, siguen estando más presentes que nunca en la experiencia interior de quienes las han amado. Para las familias de los desaparecidos, recuperar el equilibrio psicológico es un delicado equilibrio entre la necesidad de recordar y la necesidad de olvidar. La autora afirma que, a nivel social y político, cultivar una memoria colectiva de la desaparición forzada es un deber ético que valida la ocurrencia real de las atrocidades, ayuda a prevenir su repetición y alivia la transmisión transgeneracional del trauma.


Assuntos
Emoções , Transtornos de Estresse Pós-Traumáticos , Humanos , Ansiedade , Culpa , Transtornos de Ansiedade
11.
Memory ; 31(5): 689-704, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36933230

RESUMO

Conversational remembering, or sharing autobiographical memories with others, occurs frequently in everyday communication. The current project examined how the experience of shared reality with a conversation partner when describing autobiographical memories to them can operate to enhance the self, social, and directive uses of a recalled memory and explored the role of shared reality experienced as a result of conversational remembering in psychological well-being. In this project, conversational remembering was examined using experimental (Study 1) and daily diary (Study 2) methodologies. Results indicated that experiencing a shared reality during conversational remembering of an autobiographical memory enhanced self, social, and directive memory goal fulfilment and was positively associated with greater psychological well-being. The current investigation highlights important benefits of sharing our life stories with others, especially those with whom we develop a sense of shared reality.


Assuntos
Objetivos , Memória Episódica , Humanos , Bem-Estar Psicológico , Rememoração Mental , Comunicação
12.
Mem Cognit ; 51(7): 1527-1546, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-36892706

RESUMO

When learning, it is often necessary to identify important themes to organize key concepts into categories. In value-directed remembering tasks, words are paired with point values to communicate item importance, and participants prioritize high-value words over low-value words, demonstrating selective memory. In the present study, we paired values with words based on category membership to examine whether being selective in this task would lead to a transfer of learning of the "schematic reward structure" of the lists with task experience. Participants studied lists of words paired with numeric values corresponding to the categories the words belonged to and were asked to assign a value to novel exemplars from the studied categories on a final test. In Experiment 1, instructions about the schematic structure of the lists were manipulated between participants to either explicitly inform participants about the list categories or to offer more general instructions about item importance. The presence of a visible value cue during encoding was also manipulated between participants such that participants either studied the words paired with visible value cues or studied them alone. Results revealed a benefit of both explicit schema instructions and visible value cues for learning, and this persisted even after a short delay. In Experiment 2, participants had fewer study trials and received no instructions about the schematic structure of the lists. Results showed that participants could learn the schematic reward structure with fewer study trials, and value cues enhanced adaptation to new themes with task experience.


Assuntos
Aprendizagem , Rememoração Mental , Humanos , Sinais (Psicologia) , Recompensa
13.
Cogn Res Princ Implic ; 8(1): 12, 2023 02 08.
Artigo em Inglês | MEDLINE | ID: mdl-36750483

RESUMO

Although cognitive offloading, or the use of physical action to reduce internal cognitive demands, is a commonly used strategy in everyday life, relatively little is known about the conditions that encourage offloading and the memorial consequences of different offloading strategies for performance. Much of the extant work in this domain has focused on laboratory-based tasks consisting of word lists, letter strings, or numerical stimuli and thus makes little contact with real-world scenarios under which engaging in cognitive offloading might be likely. Accordingly, the current work examines offloading choice behavior and potential benefits afforded by offloading health-related information. Experiment 1 tests for internal memory performance for different pieces of missing medication interaction information. Experiment 2 tests internal memory and offloading under full offloading and partial offloading instructions for interaction outcomes that are relatively low severity (e.g., sweating). Experiment 3 extends Experiment 2 by testing offloading behavior and benefit in low-severity, medium-severity (e.g., backache), and high-severity interaction outcomes (e.g., heart attack). Here, we aimed to elucidate the potential benefits afforded by partial offloading and to examine whether there appears to be a preference for choosing to offload (i) difficult-to-remember information across outcomes that vary in severity, as well as (ii) information from more severe interaction outcomes. Results suggest that partial offloading benefits performance compared to relying on internal memory alone, but full offloading is more beneficial to performance than partial offloading.


Assuntos
Cognição , Infarto do Miocárdio , Humanos , Rememoração Mental , Comportamento de Escolha , Exercício Físico
14.
Memory ; 31(3): 406-420, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36651520

RESUMO

We experimentally explored whether and how conversation dynamics would benefit collaborative remembering in intimate couples over time. To this end, we ran a study with a three-factor mixed design with relationship type (couples vs. strangers) and age (older adults vs. younger adults) as between-participants variables, and remembering condition (collaborative vs. individual) as a within-participants variable. Thirty pairs of intimate couples (fifteen long-term relationship older couples, fifteen short-term relationship younger couples) and thirty pairs of corresponding stranger-pairs (including older strangers and younger strangers) were compared with respect to recall accuracy and conversation dynamics, specifically considering the role of gender. Results revealed significant collaborative facilitation only in older couples. Also, females' communication behaviours facilitated males' collaborative remembering performance only in older (vs. younger) couples. In addition, a gender-specific pattern of shifts from the individual to collaborative context emerged only in older couple (vs. strangers). The findings are consistent with the notion that a longer experience of collaboration and more effective conversation dynamics allow older (vs. younger) couples to perform better at collaborative remembering. We discuss processes underlying the observed gender differences, and the social and motivational implications of collaborative remembering.


Assuntos
Comportamento Cooperativo , Rememoração Mental , Masculino , Feminino , Humanos , Idoso , Comunicação , Fatores Sexuais , Parceiros Sexuais
15.
J Clin Psychol ; 79(6): 1521-1536, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36637352

RESUMO

This article outlines a new supervision practice of narrative therapy-informed reflecting team-based relational interviewing for a high-conflict stuck case of a separated middle-aged couple. The article demonstrates the supervision method consisting in five parts. First, the supervisor interviews the couples' relationship while the team watches from behind the one-way mirror. Second, the team responds to the interview while the couple and the supervisor witness their conversation. The couple is then invited to respond back to the team. Furthermore, there is a meta-conversation about the supervision in collaboration with the couple. The intervention ends with therapeutic letter writing to the relationship. The couple showed a meaningful shift in their positioning towards a more relational awareness and found valuable ways for continuing their therapy. The theoretical elements of the approach underpinning practice to tackle high conflict are considered through the illustration of the case.


Assuntos
Terapia Narrativa , Pessoa de Meia-Idade , Humanos , Comunicação
16.
J Pastoral Care Counsel ; 77(1): 75-76, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36300200

RESUMO

Re-membering is the combination of remembering and bringing something back into membership. Addressing spiritual care for gun-violence requires us to remember our past while allowing the remnants of violence to remake us-our social norms around violence. With collective ownership of our shared context of violence we can reframe our obligation: care is for the community and the social milieu not just for the individual victim or victimizer.


Assuntos
Violência com Arma de Fogo , Assistência Religiosa , Humanos , Violência
17.
Mem Cognit ; 51(1): 234-251, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-35349110

RESUMO

Metacognition involves the understanding and awareness of one's cognitive processes, and responsible remembering is the notion that people strategically focus on and remember important information to prevent negative consequences for forgetting. The present study examined the metacognitive control processes involved in responsible remembering by evaluating how information importance affects one's allocation of study time and subsequent recall. Specifically, participants were presented with pictures of children along with each child's food preferences (2 foods they like, 2 foods they dislike, and 2 foods they are allergic to and must avoid) to remember for a later test. When making no metacognitive assessments or judging the likelihood of later remembering each food preference (JOL), participants did not strategically study or demonstrate enhanced recall for the most important information (allergies). However, when making judgments of importance (at either the item or global level), participants spent more time studying and best recalled the information that they rated as most important to remember (allergies). Collectively, these results suggest that when people judge the importance of remembering information, whether at the global or item level, study decisions are better informed, resulting in strategic studying and greater recall for information with the most severe consequences for forgetting.


Assuntos
Metacognição , Criança , Humanos , Rememoração Mental , Julgamento , Probabilidade
18.
Front Psychol ; 14: 1214910, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38259537

RESUMO

When individuals collaborate to try to retrieve some encoded information, not surprisingly, the collaborative group typically remembers more than does any individual. When the non-redundant output from the individuals is combined, however, this nominal group often, surprisingly, remembers more than does the collaborative group. This finding is known as collaborative inhibition. The finding of collaborative inhibition, that collaborative groups remember less would be predicted given the summed non-redundant memories of an equal number of individuals remembering alone, indicates that there is something about remembering in a collaborative group that impairs the performance of the individuals in that group. Research directed toward what that something is has focused on both social and cognitive factors, with the consensus being that cognitive factors play the more important role. An extensive body of work on this topic has accumulated over the past 25+ years, with researchers proposing theoretical explanations and generating empirical data revealing the conditions under which this collaborative inhibition is more versus less likely to occur. The purpose of this review is to summarize those empirical factors to provide a resource for researchers interested in pursuing this work.

19.
J Neurosci ; 42(50): 9426-9434, 2022 12 14.
Artigo em Inglês | MEDLINE | ID: mdl-36332978

RESUMO

Motivation is a powerful driver of learning and memory. Functional MRI studies show that interactions among the dopaminergic midbrain substantia nigra/ventral tegmental area (SN/VTA), hippocampus, and nucleus accumbens (NAc) are critical for motivated memory encoding. However, it is not known whether these effects are transient and purely functional, or whether individual differences in the structure of this circuit underlie motivated memory encoding. To quantify individual differences in structure, diffusion-weighted MRI and probabilistic tractography were used to quantify SN/VTA-striatum and SN/VTA-hippocampus pathways associated with motivated memory encoding in humans. Male and female participants completed a motivated source memory paradigm. During encoding, words were randomly assigned to one of three conditions, reward ($1.00), control ($0.00), or punishment (-$1.00). During retrieval, participants were asked to retrieve item and source information of the previously studied words and were rewarded or penalized according to their performance. Source memory for words assigned to both reward and punishment conditions was greater than those for control words, but there were no differences in item memory based on value. Anatomically, probabilistic tractography results revealed a heterogeneous, topological arrangement of the SN/VTA. Tract density measures of SN/VTA-hippocampus pathways were positively correlated with individual differences in reward-and-punishment-modulated memory performance, whereas density of SN/VTA-striatum pathways showed no association. This novel finding suggests that pathways emerging from the human SV/VTA are anatomically separable and functionally heterogeneous. Individual differences in structural connectivity of the dopaminergic hippocampus-VTA loop are selectively associated with motivated memory encoding.SIGNIFICANCE STATEMENT Functional MRI studies show that interactions among the SN/VTA, hippocampus, and NAc are critical for motivated memory encoding. This has led to competing theories that posit either SN/VTA-NAc reward prediction errors or SN/VTA-hippocampus signals underlie motivated memory encoding. Additionally, it is not known whether these effects are transient and purely functional or whether individual differences in the structure of these circuits underlie motivated memory encoding. Using diffusion-weighted MRI and probabilistic tractography, we show that tract density measures of SN/VTA-hippocampus pathways are positively correlated with motivated memory performance, whereas density of SN/VTA-striatum pathways show no association. This finding suggests that anatomic individual differences of the dopaminergic hippocampus-VTA loop are selectively associated with motivated memory encoding.


Assuntos
Hipocampo , Área Tegmentar Ventral , Feminino , Humanos , Masculino , Dopamina/metabolismo , Hipocampo/metabolismo , Imageamento por Ressonância Magnética , Mesencéfalo/diagnóstico por imagem , Mesencéfalo/metabolismo , Recompensa , Substância Negra/diagnóstico por imagem , Substância Negra/metabolismo , Área Tegmentar Ventral/diagnóstico por imagem , Área Tegmentar Ventral/metabolismo
20.
Health (London) ; : 13634593221127822, 2022 Oct 13.
Artigo em Inglês | MEDLINE | ID: mdl-36226854

RESUMO

This article explores how partners keep the conversation going with people living with dementia (PLWD) when speaking about shared memories. Remembering is important for PLWD and their families. Indeed, memory loss is often equated with identity loss. In conversation, references to shared past events (co-rememberings) can occasion interactional trouble if memories cannot be mutually recalled. This article analyses partners' interactional practices that enable progressivity in conversations about shared memories with a PLWD. In previous research, both informal and formal carers have reported that they can find interacting with PLWD difficult. Identifying practices used by partners is one way to begin addressing those difficulties. Analytical findings are based on over 26 hours of video data from domestic settings where partners have recorded their interactions with their spouse/close friend who is living with dementia. The focus is on 14 sequences of conversation about shared memories. We show how particular practices (candidate answers, tag questions and single-party memory of a shared event) structure the interaction to facilitate conversational progression. When partners facilitate conversational progressivity, PLWD are less likely to experience stalls in conversation. Our findings suggest the actual recall of memory is less relevant than the sense of shared connection resulting from the conversational activity of co-remembering, aiding maintenance of individual and shared identities. These findings have relevance for wider care settings.

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