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Yu H, Gao J, Chang RSK, Mak W, Thach TQ, Cheung RTF. Inhibitory dysfunction may cause prospective memory impairment in temporal lobe epilepsy (TLE) patients: an event-related potential study. Front Hum Neurosci 2023; 17:1006744. [PMID: 37565055 PMCID: PMC10410078 DOI: 10.3389/fnhum.2023.1006744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 07/10/2023] [Indexed: 08/12/2023] Open
Abstract
Introduction Prospective memory (PM) is the ability to remember future intentions, and PM function is closely related to independence in daily life, particularly in patients with temporal lobe epilepsy (TLE). As PM involves various cognitive components of attention, working memory, inhibition and other executive functions, this study investigated how TLE may affect PM components and the underlying neural mechanisms. Methods Sixty-four subjects were recruited, including 20 refractory TLE patients, 18 well-controlled TLE patients and 26 age-matched healthy controls. A set of neuropsychological tests was administered to assess specific brain functions. An event-related potential (ERP) task was used to further explore how PM and its components would be differentially affected in the two TLE types. Results Our findings revealed that: (1) refractory TLE patients scored lower than the healthy controls in the digit span, Verbal Fluency Test and Symbol Digit Modalities Test; (2) refractory TLE patients exhibited impaired PM performance and reduced prospective positivity amplitudes over the frontal, central and parietal regions in ERP experiments when compared to the healthy controls; and (3) decreased P3 amplitudes in the nogo trials were observed over the frontal-central sites in refractory but not in well-controlled TLE patients. Discussion To our knowledge, this is the first ERP study on PM that has specifically identified PM impairment in refractory but not in well-controlled TLE patients. Our finding of double dissociation in PM components suggests that inhibition dysfunction may be the main reason for PM deficit in refractory TLE patients. The present results have clinical implications for neuropsychological rehabilitation in TLE patients.
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Affiliation(s)
- Hemei Yu
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Junling Gao
- Centre of Buddhist Studies, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Richard Shek-Kwan Chang
- Division of Neurology, Department of Medicine, Queen Mary Hospital, Hong Kong, Hong Kong SAR, China
| | - Windsor Mak
- Division of Neurology, Department of Medicine, Queen Mary Hospital, Hong Kong, Hong Kong SAR, China
| | - Thuan-Quoc Thach
- Department of Psychiatry, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Raymond Tak Fai Cheung
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Division of Neurology, Department of Medicine, Queen Mary Hospital, Hong Kong, Hong Kong SAR, China
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2
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ERP and Behavioural Correlates of Prospective Memory in Bilinguals during L1 and L2 Processing. Brain Sci 2023; 13:brainsci13020365. [PMID: 36831908 PMCID: PMC9954734 DOI: 10.3390/brainsci13020365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/15/2023] [Accepted: 02/18/2023] [Indexed: 02/22/2023] Open
Abstract
Language influences how we process information from multiple domains. Thus, working in first (L1) or second language (L2) can modulate bilinguals' performance on basic activities, such as visual search, decision-making, or reading. However, few studies have explored the role of L1 and L2 processing during an essential ability, such as Prospective Memory (PM). This type of memory allows us to set intentions to perform in the future (e.g., to attend an appointment). Thus, this is a novel study that allows us to explore the influence of bilingual language processing on certain cognitive abilities, which have not been deeply studied yet, such as the recall of future intentions. Thereby, this study aimed to explore the neural and behavioural correlates of bilinguals during L1 and L2 processing in a PM task where participants had to carry out an ongoing task while recovering a prospective intention given a PM cue. Importantly, the nature of the PM cue (focal or non-focal) varied the monitoring demands of the task. Behavioural and Event-Related Potential (ERP) results indicated greater engagement of monitoring processes in the PM task during L2 processing. Specifically, in L2, we found lower accuracy rates in the ongoing task and smaller amplitude differences between the focal and non-focal conditions in the P3b. Altogether, these findings suggest an impairment in prospective processing due to working in L2 contexts, supporting previous research on the impact of the bilingual experience over PM.
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Ji L, Zhao Q, Zhang Y, Wan J, Yu Y, Zhao J, Li X. Event-Related Brain Potential Correlates of Event-Based Prospective Memory in Children With Learning Disability. Front Psychiatry 2022; 13:898536. [PMID: 35815023 PMCID: PMC9256924 DOI: 10.3389/fpsyt.2022.898536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/25/2022] [Indexed: 11/13/2022] Open
Abstract
Prospective memory (PM) has been reported to be impaired in children with learning disabilities (LD), but few studies have examined the underlying neural mechanism of this impairment. To address this issue, the present study applied ERP technique to explore the difference of event-based prospective memory (EBPM) in 21 children with LD and 20 non-LD children with double task paradigm. Results from behavioral data showed that LD children exhibited lower accuracy than non-LD children. The ERP results showed that the two groups displayed significant difference in the ERP components, with longer N300 latency in LD group, but there was no obvious difference found in the prospective positivity component. The present findings seem to indicate that the poor performance of LD children on PM task might be result from deficits in PM cues detection. These results provided evidence for the existence of altered PM processing in LD children, which was characterized by a selective deficit in cues detection of PM. Therefore, these findings shed new light on the neurophysiological processes underlying PM in children with LD.
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Affiliation(s)
- Lili Ji
- Institute of Behavior and Psychology, School of Psychology, Henan University, Kaifeng, China
| | - Qi Zhao
- Department of Psychology, Faculty of Social Sciences, University of Macau, Macau, Macau SAR, China
- Center for Cognitive and Brain Sciences, University of Macau, Macau, Macau SAR, China
| | - Yafei Zhang
- Institute of Behavior and Psychology, School of Psychology, Henan University, Kaifeng, China
| | - Jiaojiao Wan
- Institute of Behavior and Psychology, School of Psychology, Henan University, Kaifeng, China
| | - Yifan Yu
- Institute of Behavior and Psychology, School of Psychology, Henan University, Kaifeng, China
| | - Junfeng Zhao
- Institute of Behavior and Psychology, School of Psychology, Henan University, Kaifeng, China
| | - Xiaoming Li
- Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, SC, United States
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Cejudo AB, López-Rojas C, Gómez-Ariza CJ, Bajo MT. ERP Correlates of Prospective Memory and Cue Focality in Children. Brain Sci 2022; 12:brainsci12050533. [PMID: 35624918 PMCID: PMC9138550 DOI: 10.3390/brainsci12050533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 11/30/2022] Open
Abstract
Prospective memory (PM) is essential in the everyday activities of children because it involves remembering intentions for the future, such as doing their homework or bringing written parental permissions to school. Developmental studies have shown increases in PM performance throughout childhood, but the specific processes underlying this development are still under debate. In the present study, event-related potentials were used to examine whether the focality of the PM task is related to the PM increments by testing two groups of children (first and last cycle of primary school) and assessing differences in N300 (cue detection), frontal positivity (switching), parietal positivity (retrieval of the intention) and frontal slow waves (monitoring of the retrieved intention). The results showed significant differences in focality in the group of older children but no differences in any of the components for their younger counterparts. In addition, the differences between prospective and ongoing trials were smaller for younger than older children. These findings suggest that the ability to adjust attentional strategies, monitor, switch and retrieve the intention develops across childhood and affects PM performance in attentionally demanding conditions.
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Affiliation(s)
- Ana B. Cejudo
- Department of Experimental Psychology, Research Center for Mind, Brain and Behavior, University of Granada, 18011 Granada, Spain; (C.L.-R.); (M.T.B.)
- Correspondence:
| | - Cristina López-Rojas
- Department of Experimental Psychology, Research Center for Mind, Brain and Behavior, University of Granada, 18011 Granada, Spain; (C.L.-R.); (M.T.B.)
| | | | - María Teresa Bajo
- Department of Experimental Psychology, Research Center for Mind, Brain and Behavior, University of Granada, 18011 Granada, Spain; (C.L.-R.); (M.T.B.)
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Hockey A, Cutmore T. Inhibitory control in prospective memory: An event related potential comparison of task-switch and dual task processing. Neuropsychologia 2021; 158:107906. [PMID: 34058173 DOI: 10.1016/j.neuropsychologia.2021.107906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 03/27/2021] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
This study cross-validates reported changes in behavioural and event-related potential (ERP) correlates of prospective memory (PM) inhibitory control performance applying different PM response selection demands (Bisiacchi et al., 2009). Participants were randomly assigned to a control group condition with no PM requirement, or to either inhibit ongoing task processing to respond to PM task cues (task-switch; TS) or provide an ongoing task response prior to providing a PM button press (dual-task; DT). The behavioural data indicated that ongoing task reaction time (RT) performance was similar in the DT, TS, and control group conditions. PM cue detection mechanisms reflected by the N300 did not differ between PM tasks. However, early occurring (400-700 ms) PM late parietal complex (LPC) amplitudes recorded over anterior electrode sites were larger in the TS compared to the DT-PM condition, and this difference persisted during the 700-1000 ms epoch. Thus, ERP correlates of PM task-set remapping were significantly altered via the induction of different PM response production rules retrieved from retrospective memory (RM). The enhancement of anteriorly distributed TS LPC amplitudes between 400 and 700 ms led to the suggestion that increased inhibition in this group condition was accompanied by heightened frontally mediated neural activations that support prepotent ongoing task response inhibition processing.
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Affiliation(s)
- A Hockey
- School of Applied Psychology, Griffith University, Building M24, 176 Messines Ridge Rd, Mount Gravatt, QLD, 4122, Australia.
| | - T Cutmore
- School of Applied Psychology, Griffith University, Building M24, 176 Messines Ridge Rd, Mount Gravatt, QLD, 4122, Australia
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Laera G, Arcara G, Gajewski PD, Kliegel M, Hering A. Age-related modulation of EEG time-frequency responses in prospective memory retrieval. Neuropsychologia 2021; 155:107818. [PMID: 33675856 DOI: 10.1016/j.neuropsychologia.2021.107818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 01/29/2021] [Accepted: 02/28/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Prospective memory involves remembering to execute an intention at the appropriate moment (prospective component) as well as retrieving the intended action (retrospective component). Several electrophysiological studies showed that neural activity associated with the prospective and the retrospective component differed between older and younger adults. However, these studies mainly reported event-related potentials (ERP), without considering other oscillatory parameters of age-related neural modulations that might be associated with the two components. OBJECTIVE In the present study, we analysed electrophysiological data to describe the age-related patterns of brain oscillations associated with the prospective and the retrospective components of prospective memory. METHODS The prospective and the retrospective components were manipulated in two experiments. In experiment 1, the prospective component was manipulated by varying the cue distinctiveness (i.e., how easy it was to detect the cue based on colour). In experiment 2, the retrospective component was manipulated by varying the number of intentions to be remembered (i.e., one or two intentions). We used time-frequency analysis to characterise the EEG oscillatory activity in younger and older adults. RESULTS The prospective component was associated with age differences in alpha and beta frequency bands. Compared to younger adults, older adults showed a decrease of parietal alpha activity when they detected distinct prospective memory cues, and a decrease of parietal beta when they detected less distinct cues. Moreover, older adults showed less beta activity compared to the younger adults across experimental manipulations. No age differences emerged with respect to the retrospective component. CONCLUSIONS The specific pattern of oscillatory activity associated with the prospective component in older adults could underlie the dynamic deployment of different attentional resources supporting cue detection. Moreover, beta activity in both experiments might support an attempt exerted by older adults to enhance task coordination processes. Overall, cluster-based permutation analyses provided a first description of the changes of the EEG time-frequency responses related to intention retrieval in older adults.
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Affiliation(s)
- Gianvito Laera
- Faculty of Psychology and Educational Sciences, Université de Genève, Geneva, Switzerland; Center for the Interdisciplinary Study of Gerontology and Vulnerability, Université de Genève, Geneva, Switzerland; Swiss National Centre of Competence in Research: LIVES - Overcoming Vulnerability: Life Course Perspectives', Lausanne and Geneva, Switzerland.
| | | | - Patrick D Gajewski
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Matthias Kliegel
- Faculty of Psychology and Educational Sciences, Université de Genève, Geneva, Switzerland; Center for the Interdisciplinary Study of Gerontology and Vulnerability, Université de Genève, Geneva, Switzerland; Swiss National Centre of Competence in Research: LIVES - Overcoming Vulnerability: Life Course Perspectives', Lausanne and Geneva, Switzerland
| | - Alexandra Hering
- Faculty of Psychology and Educational Sciences, Université de Genève, Geneva, Switzerland; Center for the Interdisciplinary Study of Gerontology and Vulnerability, Université de Genève, Geneva, Switzerland; Department of Developmental Psychology, Tilburg University, Tilburg, the Netherlands
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7
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Möschl M, Fischer R, Bugg JM, Scullin MK, Goschke T, Walser M. Aftereffects and deactivation of completed prospective memory intentions: A systematic review. Psychol Bull 2020; 146:245-278. [PMID: 31886687 PMCID: PMC7007322 DOI: 10.1037/bul0000221] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Prospective memory, the ability to perform an intended action in the future, is an essential aspect of goal-directed behavior. Intentions influence our behavior and shape the way we process and interact with our environment. One important question for research on prospective memory and goal-directed behavior is whether this influence stops after the intention has been completed successfully. Are intention representations deactivated from memory after their completion, and if so, how? Here, we systematically review 20 years of research on intention deactivation and so-called aftereffects of completed intentions across different research fields to offer an integrative perspective on this topic. We first introduce the currently dominant accounts of aftereffects (inhibition vs. retrieval) and illustrate the paradigms, findings, and interpretations that these accounts developed from. We then review the evidence for each account based on the extant research in these paradigms. While early studies proposed a rapid deactivation or even inhibition of completed intentions, more recent studies mostly suggested that intentions continue to be retrieved even after completion and interfere with subsequent performance. Although these accounts of aftereffects seem mutually exclusive, we will show that they might be two sides of the same coin. That is, intention deactivation and the occurrence of aftereffects are modulated by a multitude of factors that either foster a rapid deactivation or lead to continued retrieval of completed intentions. Lastly, we outline future directions and novel experimental procedures for research on mechanisms and modulators of intention deactivation and discuss practical implications of our findings. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
- Marcus Möschl
- Department of Psychology, Technische Universität Dresden, Germany
| | - Rico Fischer
- Department of Psychology, University of Greifswald, Greifswald, Germany
| | - Julie M. Bugg
- Department of Psychological & Brain Sciences, Washington University in St. Louis, United States of America
| | - Michael K. Scullin
- Department of Psychology and Neuroscience, Baylor University, United States of America
| | - Thomas Goschke
- Department of Psychology, Technische Universität Dresden, Germany
| | - Moritz Walser
- Department of Psychology, Technische Universität Dresden, Germany
- Department of Psychosomatic Medicine and Psychotherapy, Technische Universität Dresden, Dresden, Germany
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8
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Cognitive Flexibility Improves Memory for Delayed Intentions. eNeuro 2019; 6:ENEURO.0250-19.2019. [PMID: 31601634 PMCID: PMC6838690 DOI: 10.1523/eneuro.0250-19.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/07/2019] [Accepted: 09/26/2019] [Indexed: 01/26/2023] Open
Abstract
The ability to delay the execution of a goal until the appropriate time, prospective memory (PM), can be supported by the following two different cognitive control strategies: proactive control involving working memory maintenance of the goal and active monitoring of the environment; or reactive control relying on timely retrieval of goal information from episodic memory. Certain situations tend to favor each strategy, but the manner in which individuals adjust their strategy in response to changes in the environment is unknown. Across two experiments, human participants performed a delayed-recognition PM task embedded in an ongoing visual search task that fluctuated in difficulty. A control strategy was identified from moment to moment using reaction time costs and fMRI measures of goal maintenance. We found that people fluidly modified control strategies in accordance with changes in task demands (e.g., shifting toward proactive control when task difficulty decreased). This cognitive flexibility proved adaptive as it was associated with improved PM performance.
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Cruz G, Burgos P, Kilborn K, Evans JJ. Involvement of the anterior cingulate cortex in time-based prospective memory task monitoring: An EEG analysis of brain sources using Independent Component and Measure Projection Analysis. PLoS One 2017; 12:e0184037. [PMID: 28863146 PMCID: PMC5581172 DOI: 10.1371/journal.pone.0184037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 08/16/2017] [Indexed: 11/19/2022] Open
Abstract
Objective Time-based prospective memory (PM), remembering to do something at a particular moment in the future, is considered to depend upon self-initiated strategic monitoring, involving a retrieval mode (sustained maintenance of the intention) plus target checking (intermittent time checks). The present experiment was designed to explore what brain regions and brain activity are associated with these components of strategic monitoring in time-based PM tasks. Method 24 participants were asked to reset a clock every four minutes, while performing a foreground ongoing word categorisation task. EEG activity was recorded and data were decomposed into source-resolved activity using Independent Component Analysis. Common brain regions across participants, associated with retrieval mode and target checking, were found using Measure Projection Analysis. Results Participants decreased their performance on the ongoing task when concurrently performed with the time-based PM task, reflecting an active retrieval mode that relied on withdrawal of limited resources from the ongoing task. Brain activity, with its source in or near the anterior cingulate cortex (ACC), showed changes associated with an active retrieval mode including greater negative ERP deflections, decreased theta synchronization, and increased alpha suppression for events locked to the ongoing task while maintaining a time-based intention. Activity in the ACC was also associated with time-checks and found consistently across participants; however, we did not find an association with time perception processing per se. Conclusion The involvement of the ACC in both aspects of time-based PM monitoring may be related to different functions that have been attributed to it: strategic control of attention during the retrieval mode (distributing attentional resources between the ongoing task and the time-based task) and anticipatory/decision making processing associated with clock-checks.
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Affiliation(s)
- Gabriela Cruz
- School of Psychology, University of Glasgow, Glasgow, Scotland
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, Scotland
- Escuela de Terapia Ocupacional, Universidad de Chile, Santiago, Chile
- * E-mail:
| | - Pablo Burgos
- Departamento de Kinesiología, Universidad de Chile, Santiago, Chile
| | - Kerry Kilborn
- School of Psychology, University of Glasgow, Glasgow, Scotland
| | - Jonathan J. Evans
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, Scotland
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Hering A, Wild-Wall N, Gajewski PD, Falkenstein M, Kliegel M, Zinke K. The role of cue detection for prospective memory development across the lifespan. Neuropsychologia 2016; 93:289-300. [DOI: 10.1016/j.neuropsychologia.2016.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 11/03/2016] [Accepted: 11/11/2016] [Indexed: 11/30/2022]
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Umeda S, Tochizawa S, Shibata M, Terasawa Y. Prospective memory mediated by interoceptive accuracy: a psychophysiological approach. Philos Trans R Soc Lond B Biol Sci 2016; 371:rstb.2016.0005. [PMID: 28080964 PMCID: PMC5062095 DOI: 10.1098/rstb.2016.0005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2016] [Indexed: 11/12/2022] Open
Abstract
Previous studies on prospective memory (PM), defined as memory for future intentions, suggest that psychological stress enhances successful PM retrieval. However, the mechanisms underlying this notion remain poorly understood. We hypothesized that PM retrieval is achieved through interaction with autonomic nervous activity, which is mediated by the individual accuracy of interoceptive awareness, as measured by the heartbeat detection task. In this study, the relationship between cardiac reactivity and retrieval of delayed intentions was evaluated using the event-based PM task. Participants were required to detect PM target letters while engaged in an ongoing 2-back working memory task. The results demonstrated that individuals with higher PM task performance had a greater increase in heart rate on PM target presentation. Also, higher interoceptive perceivers showed better PM task performance. This pattern was not observed for working memory task performance. These findings suggest that cardiac afferent signals enhance PM retrieval, which is mediated by individual levels of interoceptive accuracy.This article is part of the themed issue 'Interoception beyond homeostasis: affect, cognition and mental health'.
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Affiliation(s)
- Satoshi Umeda
- Department of Psychology, Keio University, Tokyo 108-8345, Japan
| | - Saiko Tochizawa
- Keio Advanced Research Center, Keio University, Tokyo 108-8345, Japan
| | - Midori Shibata
- Keio Advanced Research Center, Keio University, Tokyo 108-8345, Japan
| | - Yuri Terasawa
- Department of Psychology, Keio University, Tokyo 108-8345, Japan
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12
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Cruz G, Miyakoshi M, Makeig S, Kilborn K, Evans J. ERPs and their brain sources in perceptual and conceptual prospective memory tasks: Commonalities and differences between the two tasks. Neuropsychologia 2016; 91:173-185. [PMID: 27520471 DOI: 10.1016/j.neuropsychologia.2016.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 07/29/2016] [Accepted: 08/05/2016] [Indexed: 11/30/2022]
Abstract
The present study examined whether Event-Related Potential (ERP) components and their neural generators are common to perceptual and conceptual prospective memory (PM) tasks or specific to the form of PM cue involved. We used Independent Component Analysis (ICA) to study the contributions of brain source activities to scalp ERPs across the different phases of two event-based PM-tasks: (1) holding intentions during a delay (monitoring) (2) detecting the correct context to perform the delayed intention (cue detection) and (3) carrying out the action (realisation of delayed intentions). Results showed that monitoring for both perceptual and conceptual PM-tasks was characterised by an enhanced early occipital negativity (N200). In addition the conceptual PM-task showed a long-lasting effect of monitoring significant around 700ms. Perceptual PM-task cues elicited an N300 enhancement associated with cue detection, whereas a midline N400-like response was evoked by conceptual PM-task cues. The Prospective Positivity associated with realisation of delayed intentions was observed in both conceptual and perceptual tasks. A common frontal-midline brain source contributed to the Prospective Positivity in both tasks and a strong contribution from parieto-frontal brain sources was observed only for the perceptually cued PM-task. These findings support the idea that: (1) The enhanced N200 can be understood as a neural correlate of a 'retrieval mode' for perceptual and conceptual PM-tasks, and additional strategic monitoring is implemented according the nature of the PM task; (2) ERPs associated with cue detection are specific to the nature of the PM cues; (3) Prospective Positivity reflects a general PM process, but the specific brain sources contributing to it depend upon the nature of the PM task.
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Affiliation(s)
- Gabriela Cruz
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK; Escuela de Terapia Ocupacional, Universidad de Chile, Santiago, Chile; School of Psychology, University of Glasgow, Glasgow, UK.
| | - Makoto Miyakoshi
- Swartz Center for Computational Neuroscience, Institute for Neural Computation, University of California San Diego, La Jolla, CA, USA
| | - Scott Makeig
- Swartz Center for Computational Neuroscience, Institute for Neural Computation, University of California San Diego, La Jolla, CA, USA
| | - Kerry Kilborn
- School of Psychology, University of Glasgow, Glasgow, UK
| | - Jonathan Evans
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
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13
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Underwood AG, Guynn MJ, Cohen AL. The Future Orientation of Past Memory: The Role of BA 10 in Prospective and Retrospective Retrieval Modes. Front Hum Neurosci 2015; 9:668. [PMID: 26733844 PMCID: PMC4689857 DOI: 10.3389/fnhum.2015.00668] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 11/24/2015] [Indexed: 11/29/2022] Open
Abstract
Klein made the provocative suggestion that the purpose of human episodic memory is to enable individuals to plan and prepare for the future. In other words, although episodic (retrospective) memory is about the past, it is not actually for the past; it is for the future. Within this focus, a natural subject for investigation is prospective memory, or memory to do things in the future. An important theoretical construct in the fields of both retrospective memory and prospective memory is that of a retrieval mode, or a neurocognitive set or readiness to treat environmental stimuli as potential retrieval cues. This construct was originally introduced in a theory of episodic (retrospective) memory and has more recently been invoked in a theory of how some prospective memory tasks are accomplished. To our knowledge, this construct has not been explicitly compared between the two literatures, and thus this is the purpose of the present article. Although we address the behavioral evidence for each construct, our primary goal is to assess the extent to which each retrieval mode appears to rely on a common neural region. Our review highlights the fact that a particular area of prefrontal cortex (BA 10) appears to play an important role in both retrospective and prospective retrieval modes. We suggest, based on this evidence and these ideas, that prospective memory research could profit from more active exploration of the relevance of theoretical constructs from the retrospective memory literature.
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Affiliation(s)
- Adam G Underwood
- Department of Psychology, New Mexico State University Las Cruces, NM, USA
| | - Melissa J Guynn
- Department of Psychology, New Mexico State University Las Cruces, NM, USA
| | - Anna-Lisa Cohen
- Department of Psychology, Yeshiva University New York, NY, USA
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14
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Cona G, Kliegel M, Bisiacchi PS. Differential effects of emotional cues on components of prospective memory: an ERP study. Front Hum Neurosci 2015; 9:10. [PMID: 25674061 PMCID: PMC4309118 DOI: 10.3389/fnhum.2015.00010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 01/07/2015] [Indexed: 11/19/2022] Open
Abstract
So far, little is known about the neurocognitive mechanisms associated with emotion effects on prospective memory (PM) performance. Thus, this study aimed at disentangling possible mechanisms for the effects of emotional valence of PM cues on the distinct phases composing PM by investigating event-related potentials (ERPs). Participants were engaged in an ongoing N-back task while being required to perform a PM task. The emotional valence of both the ongoing pictures and the PM cues was manipulated (pleasant, neutral, unpleasant). ERPs were recorded during the PM phases, such as encoding, maintenance, and retrieval of the intention. A recognition task including PM cues and ongoing stimuli was also performed at the end of the sessions. ERP results suggest that emotional PM cues not only trigger an automatic, bottom-up, capture of attention, but also boost a greater allocation of top-down processes. These processes seem to be recruited to hold attention toward the emotional stimuli and to retrieve the intention from memory, likely because of the motivational significance of the emotional stimuli. Moreover, pleasant PM cues seemed to modulate especially the prospective component, as revealed by changes in the amplitude of the ERP correlates of strategic monitoring as a function of the relevance of the valence for the PM task. Unpleasant pictures seemed to modulate especially the retrospective component, as revealed by the largest old/new effect being elicited by unpleasant PM pictures in the recognition task.
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Affiliation(s)
- Giorgia Cona
- Department of General Psychology, University of Padua Padua, Italy
| | - Matthias Kliegel
- Department of Psychology, University of Geneva Genève, Switzerland
| | - Patrizia S Bisiacchi
- Department of General Psychology, University of Padua Padua, Italy ; Department of General Psychology, Center for Cognitive Neuroscience, University of Padua Padua, Italy
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15
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Boywitt CD, Rummel J, Meiser T. Commission errors of active intentions: the roles of aging, cognitive load, and practice. AGING NEUROPSYCHOLOGY AND COGNITION 2015; 22:560-76. [PMID: 25599267 DOI: 10.1080/13825585.2014.1002446] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Performing an intended action when it needs to be withheld, for example, when temporarily prescribed medication is incompatible with the other medication, is referred to as commission errors of prospective memory (PM). While recent research indicates that older adults are especially prone to commission errors for finished intentions, there is a lack of research on the effects of aging on commission errors for still active intentions. The present research investigates conditions which might contribute to older adults' propensity to perform planned intentions under inappropriate conditions. Specifically, disproportionally higher rates of commission errors for still active intentions were observed in older than in younger adults with both salient (Experiment 1) and non-salient (Experiment 2) target cues. Practicing the PM task in Experiment 2, however, helped execution of the intended action in terms of higher PM performance at faster ongoing-task response times but did not increase the rate of commission errors. The results have important implications for the understanding of older adults' PM commission errors and the processes involved in these errors.
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Affiliation(s)
- C Dennis Boywitt
- a Department of Psychology, School of Social Sciences , University of Mannheim , Mannheim , Germany
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16
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Scolaro A, West R, Cohen AL. The ERP correlates of target checking are dependent upon the defining features of the prospective memory cues. Int J Psychophysiol 2014; 93:298-304. [DOI: 10.1016/j.ijpsycho.2014.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 06/09/2014] [Accepted: 06/11/2014] [Indexed: 11/30/2022]
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17
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Meier B, Matter S, Baumann B, Walter S, Koenig T. From episodic to habitual prospective memory: ERP-evidence for a linear transition. Front Hum Neurosci 2014; 8:489. [PMID: 25071519 PMCID: PMC4079104 DOI: 10.3389/fnhum.2014.00489] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 06/17/2014] [Indexed: 11/16/2022] Open
Abstract
Performing a prospective memory task repeatedly changes the nature of the task from episodic to habitual. The goal of the present study was to investigate the neural basis of this transition. In two experiments, we contrasted event-related potentials (ERPs) evoked by correct responses to prospective memory targets in the first, more episodic part of the experiment with those of the second, more habitual part of the experiment. Specifically, we tested whether the early, middle, or late ERP-components, which are thought to reflect cue detection, retrieval of the intention, and post-retrieval processes, respectively, would be changed by routinely performing the prospective memory task. The results showed a differential ERP effect in the middle time window (450–650 ms post-stimulus). Source localization using low resolution brain electromagnetic tomography analysis suggests that the transition was accompanied by an increase of activation in the posterior parietal and occipital cortex. These findings indicate that habitual prospective memory involves retrieval processes guided more strongly by parietal brain structures. In brief, the study demonstrates that episodic and habitual prospective memory tasks recruit different brain areas.
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Affiliation(s)
- Beat Meier
- Institute of Psychology, Experimental Psychology and Neuropsychology, University of Bern Bern, Switzerland ; Center for Cognition, Learning and Memory, University of Bern Bern, Switzerland
| | - Sibylle Matter
- Institute of Psychology, Experimental Psychology and Neuropsychology, University of Bern Bern, Switzerland
| | - Brigitta Baumann
- Institute of Psychology, Experimental Psychology and Neuropsychology, University of Bern Bern, Switzerland
| | - Stefan Walter
- Institute of Psychology, Experimental Psychology and Neuropsychology, University of Bern Bern, Switzerland ; Center for Cognition, Learning and Memory, University of Bern Bern, Switzerland
| | - Thomas Koenig
- Center for Cognition, Learning and Memory, University of Bern Bern, Switzerland ; Department of Psychiatric Neurophysiology, University Hospital of Psychiatry Bern, Switzerland
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18
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Strengthening encoding via implementation intention formation increases prospective memory commission errors. Psychon Bull Rev 2014; 20:522-7. [PMID: 23355044 DOI: 10.3758/s13423-013-0378-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Prospective memory refers to the ability to remember to execute future intentions (e.g., taking medication with dinner). Although most prior research on prospective memory errors has focused on omission errors (i.e., failures to perform an intention in response to a target cue), there has been a recent surge in research on commission errors, the erroneous performance of a finished intention. Existing studies have examined factors at retrieval that lead to commission errors; the present study extends this research by investigating the impact of encoding strength. We found that relative to standard encoding, implementation intention encoding doubled the risk of commission errors in our laboratory paradigm for both young and older adults. This novel finding demonstrates the impact of encoding strength on commission errors and documents the potential challenges of deactivating the effects of implementation intentions upon completion of a prospective memory task.
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Bugg JM, Scullin MK. Controlling intentions: the surprising ease of stopping after going relative to stopping after never having gone. Psychol Sci 2013; 24:2463-71. [PMID: 24091550 DOI: 10.1177/0956797613494850] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Decades of cognitive-control research have highlighted the difficulty of controlling a prepotent response. We examined whether having prepotent prospective-memory intentions similarly heightens the difficulty associated with stopping an intention once a prospective-memory task is finished. In three experiments, participants encoded a prospective-memory intention (e.g., press Q in response to the targets corn and dancer) and subsequently encountered either four targets or zero targets. Instructions then indicated that the prospective-memory task was finished. In a follow-up task, the targets appeared, and commission errors were recorded. Surprisingly, it was easier for participants to stop the intention when it had been fulfilled (four-target condition) than when it had gone unfulfilled (zero-target condition; Experiments 1 and 2). This was true even after intention cancellation (Experiment 2). Although repeatedly performing an intention strengthens target-action links, it appears to enable deactivation of the intention, a process that is largely target specific (Experiment 3). We relate these findings to the Zeigarnik effect, target-action deactivation, and reconsolidation theories.
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Affiliation(s)
- Julie M Bugg
- 1Department of Psychology, Washington University in St. Louis
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Scullin MK, McDaniel MA, Shelton JT. The Dynamic Multiprocess Framework: evidence from prospective memory with contextual variability. Cogn Psychol 2013; 67:55-71. [PMID: 23916951 PMCID: PMC3809757 DOI: 10.1016/j.cogpsych.2013.07.001] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 06/19/2013] [Accepted: 07/08/2013] [Indexed: 10/26/2022]
Abstract
The ability to remember to execute delayed intentions is referred to as prospective memory. Previous theoretical and empirical work has focused on isolating whether a particular prospective memory task is supported either by effortful monitoring processes or by cue-driven spontaneous processes. In the present work, we advance the Dynamic Multiprocess Framework, which contends that both monitoring and spontaneous retrieval may be utilized dynamically to support prospective remembering. To capture the dynamic interplay between monitoring and spontaneous retrieval, we had participants perform many ongoing tasks and told them that their prospective memory cue may occur in any context. Following either a 20-min or a 12-h retention interval, the prospective memory cues were presented infrequently across three separate ongoing tasks. The monitoring patterns (measured as ongoing task cost relative to a between-subjects control condition) were consistent and robust across the three contexts. There was no evidence for monitoring prior to the initial prospective memory cue; however, individuals who successfully spontaneously retrieved the prospective memory intention, thereby realizing that prospective memory cues could be expected within that context, subsequently monitored. These data support the Dynamic Multiprocess Framework, which contends that individuals will engage monitoring when prospective memory cues are expected, disengage monitoring when cues are not expected, and that when monitoring is disengaged, a probabilistic spontaneous retrieval mechanism can support prospective remembering.
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Affiliation(s)
- Michael K Scullin
- Department of Psychology, Washington University in St. Louis, United States.
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21
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Cona G, Bisiacchi PS, Moscovitch M. The effects of focal and nonfocal cues on the neural correlates of prospective memory: insights from ERPs. Cereb Cortex 2013; 24:2630-46. [PMID: 23645716 DOI: 10.1093/cercor/bht116] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The present study is the first designed to investigate behavioral and event-related potential (ERP) correlates of the processes involved in focal and nonfocal prospective memory (PM) tasks. Focal tasks are those in which the features of the PM cue are easily extracted from the ongoing activity, whereas the process is more indirect in nonfocal tasks. Strategic monitoring was associated with a slowing of reaction times in ongoing trials and with frontal and parietal ERP modulations. These effects were greater in the nonfocal task, whereas they were smaller, or even absent for some individuals, in the focal task. This indicates that strategic monitoring is engaged to a greater extent in nonfocal tasks, whereas it is less extensively recruited, or not recruited at all by some individuals, in focal tasks. Indeed, the recognition of the PM cue might also occur automatically in focal tasks, as suggested by the FN400 increase in focal PM trials. Nonfocal tasks are supported by more controlled resources not only in retrieval, but also in postretrieval monitoring and coordinating processes. This was reflected in the enhancement of the prospective positivity and frontal slow wave observed in nonfocal PM trials. We interpreted these results as supporting the multiprocess view of PM.
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Affiliation(s)
- Giorgia Cona
- Department of General Psychology, University of Padua, Padua, Italy
| | | | - Morris Moscovitch
- Department of Psychology, University of Toronto, Toronto, Canada and Rotman Research Institute, Baycrest Centre, Toronto, Canada
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22
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Scullin MK, Bugg JM. Failing to forget: prospective memory commission errors can result from spontaneous retrieval and impaired executive control. J Exp Psychol Learn Mem Cogn 2013; 39:965-71. [PMID: 22799284 PMCID: PMC3598897 DOI: 10.1037/a0029198] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Prospective memory (PM) research typically examines the ability to remember to execute delayed intentions but often ignores the ability to forget finished intentions. We had participants perform (or not perform; control group) a PM task and then instructed them that the PM task was finished. We later (re)presented the PM cue. Approximately 25% of participants made a commission error, the erroneous repetition of a PM response following intention completion. Comparisons between the PM groups and control group suggested that commission errors occurred in the absence of preparatory monitoring. Response time analyses additionally suggested that some participants experienced fatigue across the ongoing task block, and those who did were more susceptible to making a commission error. These results supported the hypothesis that commission errors can arise from the spontaneous retrieval of finished intentions and possibly the failure to exert executive control to oppose the PM response.
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Affiliation(s)
- Michael K. Scullin
- Washington University in St. Louis, Department of Psychology
- Emory University School of Medicine, Department of Neurology
| | - Julie M. Bugg
- Washington University in St. Louis, Department of Psychology
- DePauw University, Department of Psychology
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23
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Age-related differences in the neural correlates of remembering time-based intentions. Neuropsychologia 2012; 50:2692-704. [DOI: 10.1016/j.neuropsychologia.2012.07.033] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 07/19/2012] [Accepted: 07/21/2012] [Indexed: 11/18/2022]
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Wang Y, Li X, Huang J, Cao X, Cui J, Zhao Q, Wang Y, Shum DHK, Chan RCK. Relationship between prospective memory and vigilance: Evidence from ERP. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-012-5306-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Abstract
Intentions have been shown to be more accessible (e.g., more quickly and accurately recalled) compared to other sorts of to-be-remembered information; a result termed an intention superiority effect (Goschke & Kuhl, 1993). In the current study, we demonstrate an intention interference effect (IIE) in which color-naming performance in a Stroop task was slower for words belonging to an intention that participants had to remember to carry out (Do-the-Task condition) versus an intention that did not have to be executed (Ignore-the-Task condition). In previous work (e.g., Cohen et al., 2005), having a prospective intention in mind was confounded with carrying a memory load. In Experiment 1, we added a digit-retention task to control for effects of cognitive load. In Experiment 2, we eliminated the memory confound in a new way, by comparing intention-related and control words within each trial. Results from both Experiments 1 and 2 revealed an IIE suggesting that interference is very specific to the intention, not just to a memory load.
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Affiliation(s)
- Anna-Lisa Cohen
- Department of Psychology, Yeshiva University, New York, NY 10033, USA.
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26
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Cona G, Arcara G, Tarantino V, Bisiacchi PS. Electrophysiological correlates of strategic monitoring in event-based and time-based prospective memory. PLoS One 2012; 7:e31659. [PMID: 22363699 PMCID: PMC3283681 DOI: 10.1371/journal.pone.0031659] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 01/17/2012] [Indexed: 11/18/2022] Open
Abstract
Prospective memory (PM) is the ability to remember to accomplish an action when a particular event occurs (i.e., event-based PM), or at a specific time (i.e., time-based PM) while performing an ongoing activity. Strategic Monitoring is one of the basic cognitive functions supporting PM tasks, and involves two mechanisms: a retrieval mode, which consists of maintaining active the intention in memory; and target checking, engaged for verifying the presence of the PM cue in the environment. The present study is aimed at providing the first evidence of event-related potentials (ERPs) associated with time-based PM, and at examining differences and commonalities in the ERPs related to Strategic Monitoring mechanisms between event- and time-based PM tasks. The addition of an event-based or a time-based PM task to an ongoing activity led to a similar sustained positive modulation of the ERPs in the ongoing trials, mainly expressed over prefrontal and frontal regions. This modulation might index the retrieval mode mechanism, similarly engaged in the two PM tasks. On the other hand, two further ERP modulations were shown specifically in an event-based PM task. An increased positivity was shown at 400–600 ms post-stimulus over occipital and parietal regions, and might be related to target checking. Moreover, an early modulation at 130–180 ms post-stimulus seems to reflect the recruitment of attentional resources for being ready to respond to the event-based PM cue. This latter modulation suggests the existence of a third mechanism specific for the event-based PM; that is, the “readiness mode”.
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Affiliation(s)
- Giorgia Cona
- Department of General Psychology, University of Padua, Padua, Italy.
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27
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Prospective memory and aging: preserved spontaneous retrieval, but impaired deactivation, in older adults. Mem Cognit 2012; 39:1232-40. [PMID: 21557005 DOI: 10.3758/s13421-011-0106-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Prospective remembering is partially supported by cue-driven spontaneous retrieval processes. We investigated spontaneous retrieval processes in younger and older adults by presenting prospective memory target cues during a lexical decision task following instructions that the prospective memory task was finished. Spontaneous retrieval was inferred from slowed lexical decision responses to target cues (i.e., intention interference). When the intention was finished, younger adults efficiently deactivated their intention, but the older adults continued to retrieve their intentions. Levels of inhibitory functioning were negatively associated with intention interference in the older adult group, but not in the younger adult group. These results indicate that normal aging might not compromise spontaneous retrieval processes but that the ability to deactivate completed intentions is impaired.
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28
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Czernochowski D, Horn S, Bayen UJ. Does frequency matter? ERP and behavioral correlates of monitoring for rare and frequent prospective memory targets. Neuropsychologia 2012; 50:67-76. [DOI: 10.1016/j.neuropsychologia.2011.10.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 10/26/2011] [Accepted: 10/28/2011] [Indexed: 10/15/2022]
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Mattli F, Zöllig J, West R. Age-related differences in the temporal dynamics of prospective memory retrieval: A lifespan approach. Neuropsychologia 2011; 49:3494-504. [DOI: 10.1016/j.neuropsychologia.2011.08.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 08/05/2011] [Accepted: 08/26/2011] [Indexed: 10/17/2022]
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30
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Deficits in prospective memory following damage to the prefrontal cortex. Neuropsychologia 2011; 49:2178-84. [DOI: 10.1016/j.neuropsychologia.2011.03.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Revised: 03/25/2011] [Accepted: 03/28/2011] [Indexed: 11/21/2022]
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31
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West R. The temporal dynamics of prospective memory: A review of the ERP and prospective memory literature. Neuropsychologia 2011; 49:2233-45. [DOI: 10.1016/j.neuropsychologia.2010.12.028] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2010] [Revised: 12/08/2010] [Accepted: 12/14/2010] [Indexed: 11/25/2022]
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32
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Neural basis for successful encoding and retrieval of prospective memory. SCIENCE CHINA-LIFE SCIENCES 2011; 54:580-7. [DOI: 10.1007/s11427-011-4176-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2010] [Accepted: 04/04/2011] [Indexed: 11/28/2022]
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33
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Wang Y, Cui J, Chan RCK, Deng Y, Shi H, Hong X, Li Z, Yu X, Gong QY, Shum D. Meta-analysis of prospective memory in schizophrenia: nature, extent, and correlates. Schizophr Res 2009; 114:64-70. [PMID: 19713081 DOI: 10.1016/j.schres.2009.07.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Revised: 06/30/2009] [Accepted: 07/09/2009] [Indexed: 11/30/2022]
Abstract
Prospective memory (PM) is the ability to remember to carry out an intended action in the future and it is an important function for everyday living. Studies have found that the neural basis of PM is located mainly in the prefrontal lobes (particularly in Brodmann Area 10) and patients with schizophrenia have functional deficits in this area. The present study provided a meta-analytic review of PM performances in patients with schizophrenia in 11 studies. A total of 485 patients with schizophrenia and 409 controls were included. Results showed that patients with schizophrenia exhibited impairments in all time- (d=-1.33), event- (d=-0.827), and activity-based (d=-0.729) PM, with time-based PM more impaired than event-based PM. In addition, PM was found to be significantly correlated with negative symptoms (r=-0.18), general psychopathology (r=-0.168), medication dosage (r=-0.119), duration of illness (r=-0.131), age (r=-0.23), education (r=0.249), IQ (r=0.439) and premorbid IQ (r=0.356). It has theoretical and clinical implications. Theoretically, the results indicate time-based PM involves more initiation than event-based PM. Clinically, the results indicate patients on high dose of antipsychotic medication and with long duration of illness need special attention from care givers for PM problems.
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Affiliation(s)
- Ya Wang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
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