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Ehrhardt NM, Flöel A, Li SC, Lucchese G, Antonenko D. Brain oscillatory processes related to sequence memory in healthy older adults. Neurobiol Aging 2024; 139:64-72. [PMID: 38626525 DOI: 10.1016/j.neurobiolaging.2024.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 02/05/2024] [Accepted: 04/02/2024] [Indexed: 04/18/2024]
Abstract
Sequence memory is subject to age-related decline, but the underlying processes are not yet fully understood. We analyzed electroencephalography (EEG) in 21 healthy older (60-80 years) and 26 young participants (20-30 years) and compared time-frequency spectra and theta-gamma phase-amplitude-coupling (PAC) during encoding of the order of visually presented items. In older adults, desynchronization in theta (4-8 Hz) and synchronization in gamma (30-45 Hz) power did not distinguish between subsequently correctly and incorrectly remembered trials, while there was a subsequent memory effect for young adults. Theta-gamma PAC was modulated by item position within a sequence for older but not young adults. Specifically, position within a sequence was coded by higher gamma amplitude for successive theta phases for later correctly remembered trials. Thus, deficient differentiation in theta desynchronization and gamma oscillations during sequence encoding in older adults may reflect neurophysiological correlates of age-related memory decline. Furthermore, our results indicate that sequences are coded by theta-gamma PAC in older adults, but that this mechanism might lose precision in aging.
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Affiliation(s)
- Nina M Ehrhardt
- Department of Neurology, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, Greifswald 17475, Germany.
| | - Agnes Flöel
- Department of Neurology, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, Greifswald 17475, Germany; German Centre for Neurodegenerative Diseases (DZNE) Standort Greifswald, Greifswald, Germany
| | - Shu-Chen Li
- Chair of Lifespan Developmental Neuroscience, Faculty of Psychology, TU Dresden, Zellescher Weg 17, Dresden 01062, Germany; Centre for Tactile Internet with Human-in-the-Loop, TU Dresden, Dresden 01062, Germany
| | - Guglielmo Lucchese
- Department of Neurology, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, Greifswald 17475, Germany; Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatry University Hospital Zurich, University of Zurich, Lengstrasse 31, Zurich, Switzerland.
| | - Daria Antonenko
- Department of Neurology, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, Greifswald 17475, Germany
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2
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Lin X, Chen D, Liu J, Yao Z, Xie H, Anderson MC, Hu X. Observing the suppression of individual aversive memories from conscious awareness. Cereb Cortex 2024; 34:bhae080. [PMID: 38863114 PMCID: PMC11166503 DOI: 10.1093/cercor/bhae080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 06/13/2024] Open
Abstract
When reminded of an unpleasant experience, people often try to exclude the unwanted memory from awareness, a process known as retrieval suppression. Here we used multivariate decoding (MVPA) and representational similarity analyses on EEG data to track how suppression unfolds in time and to reveal its impact on item-specific cortical patterns. We presented reminders to aversive scenes and asked people to either suppress or to retrieve the scene. During suppression, mid-frontal theta power within the first 500 ms distinguished suppression from passive viewing of the reminder, indicating that suppression rapidly recruited control. During retrieval, we could discern EEG cortical patterns relating to individual memories-initially, based on theta-driven visual perception of the reminders (0 to 500 ms) and later, based on alpha-driven reinstatement of the aversive scene (500 to 3000 ms). Critically, suppressing retrieval weakened (during 360 to 600 ms) and eventually abolished item-specific cortical patterns, a robust effect that persisted until the reminder disappeared (780 to 3000 ms). Representational similarity analyses provided converging evidence that retrieval suppression weakened the representation of target scenes during the 500 to 3000 ms reinstatement window. Together, rapid top-down control during retrieval suppression abolished cortical patterns of individual memories, and precipitated later forgetting. These findings reveal a precise chronometry on the voluntary suppression of individual memories.
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Affiliation(s)
- Xuanyi Lin
- Center for Sleep & Circadian Biology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, 60208, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, 60208, United States
- Department of Psychology, The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Danni Chen
- Department of Psychology, The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Jing Liu
- Department of Applied Social Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China
| | - Ziqing Yao
- Department of Psychology, The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Hui Xie
- Department of Psychology, The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Michael C Anderson
- MRC Cognition & Brain Sciences Unit, Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, CB2 7EF, UK
| | - Xiaoqing Hu
- Department of Psychology, The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
- HKU-Shenzhen Institute of Research and Innovation, Shenzhen, 518057, China
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3
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Ostrowski J, Rose M. Increases in pre-stimulus theta and alpha oscillations precede successful encoding of crossmodal associations. Sci Rep 2024; 14:7895. [PMID: 38570599 PMCID: PMC10991485 DOI: 10.1038/s41598-024-58227-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 03/26/2024] [Indexed: 04/05/2024] Open
Abstract
A central aspect of episodic memory is the formation of associations between stimuli from different modalities. Current theoretical approaches assume a functional role of ongoing oscillatory power and phase in the theta band (3-7 Hz) for the encoding of crossmodal associations. Furthermore, ongoing activity in the theta range as well as alpha (8-12 Hz) and low beta activity (13-20 Hz) before the presentation of a stimulus is thought to modulate subsequent cognitive processing, including processes that are related to memory. In this study, we tested the hypothesis that pre-stimulus characteristics of low frequency activity are relevant for the successful formation of crossmodal memory. The experimental design that was used specifically allowed for the investigation of associative memory independent from individual item memory. Participants (n = 51) were required to memorize associations between audiovisual stimulus pairs and distinguish them from newly arranged ones consisting of the same single stimuli in the subsequent recognition task. Our results show significant differences in the state of pre-stimulus theta and alpha power between remembered and not remembered crossmodal associations, clearly relating increased power to successful recognition. These differences were positively correlated with memory performance, suggesting functional relevance for behavioral measures of associative memory. Further analysis revealed similar effects in the low beta frequency ranges, indicating the involvement of different pre-stimulus-related cognitive processes. Phase-based connectivity measures in the theta band did not differ between remembered and not remembered stimulus pairs. The findings support the assumed functional relevance of theta band oscillations for the formation of associative memory and demonstrate that an increase of theta as well as alpha band oscillations in the pre-stimulus period is beneficial for the establishment of crossmodal memory.
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Affiliation(s)
- Jan Ostrowski
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Michael Rose
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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4
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Dhammapeera P, Brunskill C, Hellerstedt R, Bergström ZM. Counterfactual imagination impairs memory for true actions: EEG and behavioural evidence. Cogn Neurosci 2024; 15:12-23. [PMID: 38362597 DOI: 10.1080/17588928.2024.2315814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Indexed: 02/17/2024]
Abstract
Imagined events can be misremembered as experienced, leading to memory distortions. However, less is known regarding how imagining counterfactual versions of past events can impair existing memories. We addressed this issue, and used EEG to investigate the neurocognitive processes involved when retrieving memories of true events that are associated with a competing imagined event. Participants first performed simple actions with everyday objects (e.g., rolling dice). A week later, they were shown pictures of some of the objects and either imagined the same action they had originally performed, or imagined a counterfactual action (e.g., stacking the dice). Subsequent tests showed that memory for performed actions was reduced after counterfactual imagination when compared to both veridical imagination and a baseline condition that had not been imagined at all, providing novel evidence that counterfactual imagination impairs true memories beyond simple forgetting over time. ERPs and EEG oscillations showed evidence of separate processes associated with memory retrieval versus post-retrieval processes that were recruited to support recall of memories that were challenging to access. The findings show that counterfactual imagination can cause impairments to sensorimotor-rich event memories, and provide new evidence regarding the neurocognitive mechanisms that are recruited when people need to distinguish memories of imagined versus true events.
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Affiliation(s)
- Phot Dhammapeera
- School of Psychology, University of Kent, Canterbury, UK
- Faculty of Psychology, Chulalongkorn University, Bangkok, Thailand
| | | | - Robin Hellerstedt
- School of Psychology, University of Kent, Canterbury, UK
- Centre for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
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5
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Junker FB, Schmidt‐Wilcke T, Schnitzler A, Lange J. Temporal dynamics of oscillatory activity during nonlexical language decoding: Evidence from Morse code and magnetoencephalography. Hum Brain Mapp 2023; 44:6185-6197. [PMID: 37792277 PMCID: PMC10619365 DOI: 10.1002/hbm.26505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/27/2023] [Accepted: 09/14/2023] [Indexed: 10/05/2023] Open
Abstract
Understanding encoded languages, such as written script or Morse code, requires nonlexical and lexical processing components that act in a parallel and interactive fashion. Decoding written script-as for example in reading-is typically very fast, making the investigation of the lexical and nonlexical components and their underlying neural mechanisms challenging. In the current study, we aimed to accomplish this problem by using Morse code as a model for language decoding. The decoding of Morse code is slower and thus allows a better and more fine-grained investigation of the lexical and nonlexical components of language decoding. In the current study, we investigated the impact of various components of nonlexical decoding of Morse code using magnetoencephalography. For this purpose, we reconstructed the time-frequency responses below 40 Hz in brain regions significantly involved in Morse code decoding and word comprehension that were identified in a previous study. Event-related reduction in beta- and alpha-band power were found in left inferior frontal cortex and angular gyrus, respectively, while event-related theta-band power increase was found at frontal midline. These induced oscillations reflect working-memory encoding, long-term memory retrieval as well as demanding cognitive control, respectively. In sum, by using Morse code and MEG, we were able to identify a cortical network underlying language decoding in a time- and frequency-resolved manner.
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Affiliation(s)
- Frederick Benjamin Junker
- Institute of Clinical Neuroscience and Medical Psychology, Medical FacultyHeinrich‐Heine‐UniversityDüsseldorfGermany
| | - Tobias Schmidt‐Wilcke
- Institute of Clinical Neuroscience and Medical Psychology, Medical FacultyHeinrich‐Heine‐UniversityDüsseldorfGermany
- Neurological Center MainkofenDeggendorfGermany
| | - Alfons Schnitzler
- Institute of Clinical Neuroscience and Medical Psychology, Medical FacultyHeinrich‐Heine‐UniversityDüsseldorfGermany
| | - Joachim Lange
- Institute of Clinical Neuroscience and Medical Psychology, Medical FacultyHeinrich‐Heine‐UniversityDüsseldorfGermany
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6
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Jackson LE, Han YJ, Evans LH. The efficacy of electroencephalography neurofeedback for enhancing episodic memory in healthy and clinical participants: A systematic qualitative review and meta-analysis. Neurosci Biobehav Rev 2023; 155:105455. [PMID: 37926240 DOI: 10.1016/j.neubiorev.2023.105455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/09/2023] [Accepted: 10/30/2023] [Indexed: 11/07/2023]
Abstract
Several studies have examined whether electroencephalography neurofeedback (EEG-NF), a self-regulatory technique where an individual receives real-time feedback on a pattern of brain activity that is theoretically linked to a target behaviour, can enhance episodic memory. The aim of this research was to i) provide a qualitative overview of the literature, and ii) conduct a meta-analysis of appropriately controlled studies to determine whether EEG-NF can enhance episodic memory. The literature search returned 46 studies, with 21 studies (44 effect sizes) meeting the inclusion criteria for the meta-analysis. The qualitative overview revealed that, across EEG-NF studies on both healthy and clinical populations, procedures and protocols vary considerably and many studies were insufficiently powered with inadequate design features. The meta-analysis, conducted on studies with an active control, revealed a small-size, significant positive effect of EEG-NF on episodic memory performance (g = 0.31, p = 0.003), moderated by memory modality and EEG-NF self-regulation success. These results are discussed with a view towards optimising EEG-NF training and subsequent benefits to episodic memory.
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Affiliation(s)
- Lucy E Jackson
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff CF24 4HQ, Wales, UK
| | - Yi-Jhong Han
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London, London SE5 9RJ, England, UK
| | - Lisa H Evans
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff CF24 4HQ, Wales, UK.
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7
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Herz N, Bukala BR, Kragel JE, Kahana MJ. Hippocampal activity predicts contextual misattribution of false memories. Proc Natl Acad Sci U S A 2023; 120:e2305292120. [PMID: 37751551 PMCID: PMC10556612 DOI: 10.1073/pnas.2305292120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 08/02/2023] [Indexed: 09/28/2023] Open
Abstract
Failure of contextual retrieval can lead to false recall, wherein people retrieve an item or experience that occurred in a different context or did not occur at all. Whereas the hippocampus is thought to play a crucial role in memory retrieval, we lack understanding of how the hippocampus supports retrieval of items related to a target context while disregarding related but irrelevant information. Using direct electrical recordings from the human hippocampus, we investigate the neural process underlying contextual misattribution of false memories. In two large datasets, we characterize key physiological differences between correct and false recalls that emerge immediately prior to vocalization. By differentiating between false recalls that share high or low contextual similarity with the target context, we show that low-frequency activity (6 to 18 Hz) in the hippocampus tracks similarity between the current and retrieved context. Applying multivariate decoding methods, we were able to reliably predict the contextual source of the to-be-recalled item. Our findings elucidate one of the hallmark features of episodic memory: our ability to distinguish between memories that were formed on different occasions.
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Affiliation(s)
- Noa Herz
- Department of Psychology, University of Pennsylvania, Philadelphia, PA19104
| | - Bernard R. Bukala
- Department of Psychology, University of Pennsylvania, Philadelphia, PA19104
| | - James E. Kragel
- Department of Neurology, University of Chicago, Chicago, IL60637
| | - Michael J. Kahana
- Department of Psychology, University of Pennsylvania, Philadelphia, PA19104
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8
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Griffiths BJ, Jensen O. Gamma oscillations and episodic memory. Trends Neurosci 2023; 46:832-846. [PMID: 37550159 DOI: 10.1016/j.tins.2023.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 06/20/2023] [Accepted: 07/16/2023] [Indexed: 08/09/2023]
Abstract
Enhanced gamma oscillatory activity (30-80 Hz) accompanies the successful formation and retrieval of episodic memories. While this co-occurrence is well documented, the mechanistic contributions of gamma oscillatory activity to episodic memory remain unclear. Here, we review how gamma oscillatory activity may facilitate spike timing-dependent plasticity, neural communication, and sequence encoding/retrieval, thereby ensuring the successful formation and/or retrieval of an episodic memory. Based on the evidence reviewed, we propose that multiple, distinct forms of gamma oscillation can be found within the canonical gamma band, each of which has a complementary role in the neural processes listed above. Further exploration of these theories using causal manipulations may be key to elucidating the relevance of gamma oscillatory activity to episodic memory.
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Affiliation(s)
| | - Ole Jensen
- Centre for Human Brain Health, University of Birmingham, Birmingham, UK
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9
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Gjorgieva E, Morales-Torres R, Cabeza R, Woldorff MG. Neural retrieval processes occur more rapidly for visual mental images that were previously encoded with high-vividness. Cereb Cortex 2023; 33:10234-10244. [PMID: 37526263 DOI: 10.1093/cercor/bhad278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 08/02/2023] Open
Abstract
Visual mental imagery refers to our ability to experience visual images in the absence of sensory stimulation. Studies have shown that visual mental imagery can improve episodic memory. However, we have limited understanding of the neural mechanisms underlying this improvement. Using electroencephalography, we examined the neural processes associated with the retrieval of previously generated visual mental images, focusing on how the vividness at generation can modulate retrieval processes. Participants viewed word stimuli referring to common objects, forming a visual mental image of each word and rating the vividness of the mental image. This was followed by a surprise old/new recognition task. We compared retrieval performance for items rated as high- versus low-vividness at encoding. High-vividness items were retrieved with faster reaction times and higher confidence ratings in the memory judgment. While controlling for confidence, neural measures indicated that high-vividness items produced an earlier decrease in alpha-band activity at retrieval compared with low-vividness items, suggesting an earlier memory reinstatement. Even when low-vividness items were remembered with high confidence, they were not retrieved as quickly as high-vividness items. These results indicate that when highly vivid mental images are encoded, the speed of their retrieval occurs more rapidly, relative to low-vivid items.
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Affiliation(s)
- Eva Gjorgieva
- Department of Psychology and Neuroscience, Duke University, Durham, NC 27708, United States
- Center for Cognitive Neuroscience, Duke Institute for Brain Sciences, Duke University, Durham, NC 27708, United States
| | - Ricardo Morales-Torres
- Department of Psychology and Neuroscience, Duke University, Durham, NC 27708, United States
- Center for Cognitive Neuroscience, Duke Institute for Brain Sciences, Duke University, Durham, NC 27708, United States
| | - Roberto Cabeza
- Department of Psychology and Neuroscience, Duke University, Durham, NC 27708, United States
- Center for Cognitive Neuroscience, Duke Institute for Brain Sciences, Duke University, Durham, NC 27708, United States
| | - Marty G Woldorff
- Department of Psychology and Neuroscience, Duke University, Durham, NC 27708, United States
- Center for Cognitive Neuroscience, Duke Institute for Brain Sciences, Duke University, Durham, NC 27708, United States
- Departtment of Psychiatry, Duke University, Durham, NC 27708, United States
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10
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Korkki SM, Richter FR, Gellersen HM, Simons JS. Reduced memory precision in older age is associated with functional and structural differences in the angular gyrus. Neurobiol Aging 2023; 129:109-120. [PMID: 37300913 DOI: 10.1016/j.neurobiolaging.2023.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 04/01/2023] [Accepted: 04/22/2023] [Indexed: 06/12/2023]
Abstract
Decreased fidelity of mnemonic representations plays a critical role in age-related episodic memory deficits, yet the brain mechanisms underlying such reductions remain unclear. Using functional and structural neuroimaging, we examined how changes in two key nodes of the posterior-medial network, the hippocampus and the angular gyrus (AG), might underpin loss of memory precision in older age. Healthy young and older adults completed a memory task that involved reconstructing object features on a continuous scale. Investigation of blood-oxygen-level-dependent (BOLD) activity during retrieval revealed an age-related reduction in activity reflecting successful recovery of object features in the hippocampus, whereas trial-wise modulation of BOLD signal by graded memory precision was diminished in the AG. Gray matter volume of the AG further predicted individual differences in memory precision in older age, beyond likelihood of successful retrieval. These findings provide converging evidence for a role of functional and structural integrity of the AG in constraining the fidelity of episodic remembering in older age, yielding new insights into parietal contributions to age-related episodic memory decline.
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Affiliation(s)
- Saana M Korkki
- Department of Psychology, University of Cambridge, Cambridge, UK; Aging Research Center, Karolinska Institute and Stockholm University, Solna, Sweden.
| | - Franziska R Richter
- Cognitive Psychology Unit, Institute of Psychology, Leiden University, Leiden, Netherlands
| | | | - Jon S Simons
- Department of Psychology, University of Cambridge, Cambridge, UK.
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Karlsson AE, Sander MC. Altered alpha/beta desynchronization during item-context binding contributes to the associative deficit in older age. Cereb Cortex 2023; 33:2455-2469. [PMID: 35750026 PMCID: PMC10016059 DOI: 10.1093/cercor/bhac219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 11/13/2022] Open
Abstract
It is proposed that older adults have difficulties to bind item and context and to recruit deep, elaborative processing during encoding. Senescent changes in the oscillatory foundations of these processes are currently unclear. We recorded electroencephalography during item-context memory formation in younger (n = 57) and older (n = 55) adults. At test, we assessed memory for the items and the item-context pairs and examined encoding-related activity based on how much information was recovered at retrieval (miss < item-only < pair). Item memory was comparable between age groups while pair memory was reduced in the older adults. Theta synchronization and alpha/beta desynchronization increased linearly with the amount of information available. Single-trial theta power could not predict subsequent item memory, but predicted pair memory in an age-invariant manner, in line with a mechanism supporting associative memory. In contrast, single-trial alpha/beta power predicted both item and pair memory, in line with a mechanism reflecting the depth of information processing, and predicted pair memory less well in the older than the younger adults. Thus, theta and alpha/beta oscillations contribute differently in shaping the contents of memories and reduced processing capacity contributes to episodic memory decline in older age.
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Affiliation(s)
- Anna E Karlsson
- Corresponding author: Max Planck Institute for Human Development, Center for Lifespan Psychology, Lentzeallee 94, Berlin 14195, Germany.
| | - Myriam C Sander
- Max Planck Institute for Human Development, Center for Lifespan Psychology, Berlin, Germany
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Ren X, Zhang H, Luo H. Dynamic emergence of relational structure network in human brains. Prog Neurobiol 2022; 219:102373. [DOI: 10.1016/j.pneurobio.2022.102373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/30/2022] [Accepted: 11/08/2022] [Indexed: 11/10/2022]
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13
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Ponomareva NV, Andreeva TV, Protasova M, Konovalov RN, Krotenkova MV, Kolesnikova EP, Malina DD, Kanavets EV, Mitrofanov AA, Fokin VF, Illarioshkin SN, Rogaev EI. Genetic association of apolipoprotein E genotype with EEG alpha rhythm slowing and functional brain network alterations during normal aging. Front Neurosci 2022; 16:931173. [PMID: 35979332 PMCID: PMC9376365 DOI: 10.3389/fnins.2022.931173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/27/2022] [Indexed: 12/02/2022] Open
Abstract
The ε4 allele of the apolipoprotein E (APOE4+) genotype is a major genetic risk factor for Alzheimer’s disease (AD), but the mechanisms underlying its influence remain incompletely understood. The study aimed to investigate the possible effect of the APOE genotype on spontaneous electroencephalogram (EEG) alpha characteristics, resting-state functional MRI (fMRI) connectivity (rsFC) in large brain networks and the interrelation of alpha rhythm and rsFC characteristics in non-demented adults during aging. We examined the EEG alpha subband’s relative power, individual alpha peak frequency (IAPF), and fMRI rsFC in non-demented volunteers (age range 26–79 years) stratified by the APOE genotype. The presence of the APOE4+ genotype was associated with lower IAPF and lower relative power of the 11–13 Hz alpha subbands. The age related decrease in EEG IAPF was more pronounced in the APOE4+ carriers than in the APOE4+ non-carriers (APOE4-). The APOE4+ carriers had a stronger fMRI positive rsFC of the interhemispheric regions of the frontoparietal, lateral visual and salience networks than the APOE4– individuals. In contrast, the negative rsFC in the network between the left hippocampus and the right posterior parietal cortex was reduced in the APOE4+ carriers compared to the non-carriers. Alpha rhythm slowing was associated with the dysfunction of hippocampal networks. Our results show that in adults without dementia APOE4+ genotype is associated with alpha rhythm slowing and that this slowing is age-dependent. Our data suggest predominant alterations of inhibitory processes in large-scale brain network of non-demented APOE4+ carriers. Moreover, dysfunction of large-scale hippocampal network can influence APOE-related alpha rhythm vulnerability.
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Affiliation(s)
- Natalya V. Ponomareva
- Research Center of Neurology, Moscow, Russia
- Center for Genetics and Life Science, Sirius University of Science and Technology, Sochi, Russia
- *Correspondence: Natalya V. Ponomareva,
| | - Tatiana V. Andreeva
- Center for Genetics and Life Science, Sirius University of Science and Technology, Sochi, Russia
- Vavilov Institute of General Genetics, Russian Academy of Sciences (RAS), Moscow, Russia
| | - Maria Protasova
- Center for Genetics and Life Science, Sirius University of Science and Technology, Sochi, Russia
- Vavilov Institute of General Genetics, Russian Academy of Sciences (RAS), Moscow, Russia
| | | | | | | | | | | | | | | | | | - Evgeny I. Rogaev
- Center for Genetics and Life Science, Sirius University of Science and Technology, Sochi, Russia
- Vavilov Institute of General Genetics, Russian Academy of Sciences (RAS), Moscow, Russia
- Brudnick Neuropsychiatric Research Institute (BNRI), University of Massachusetts Medical School, Worcester, MA, United States
- Evgeny I. Rogaev,
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14
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Deng X, Liang X, Zhan X, Rosenfeld JP, Olson J, Yan G, Xue C, Lu Y. A novel and effective item-source complex trial protocol: Discrimination of guilty from both knowledgeable and unknowledgeable innocent subjects. Psychophysiology 2022; 59:e14033. [PMID: 35230702 DOI: 10.1111/psyp.14033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 02/05/2022] [Accepted: 02/05/2022] [Indexed: 12/30/2022]
Abstract
Innocent subjects who are knowledgeable of crime-related information will often be misclassified as "guilty" in P300-based complex trial protocol (CTP). Therefore, it is necessary to develop a more rigorous CTP that can effectively discriminate the guilty from both the knowledgeable and the unknowledgeable innocents. Sometimes the guilty and the knowledgeable innocents possess the same item memories but different source memories. The present study designed a novel item-source complex trial protocol based on the differences of source memory among the three kinds of individuals. Either the crime-related probe (e.g., the stolen ring) or one of the crime-unrelated stimuli (e.g., watch, earring, bracelet, or bangle) (item memory) was presented in the first part of each trail, and either a stealing-source word (e.g., stole) or other-source word (e.g., fetched) (source memory) was presented in the second part of each trail. The results showed that: (1) the P300 evoked by item memory could effectively discriminated the guilty from the unknowledgeable innocent (AUC = 0.76) but failed to effectively discriminate the guilty from the knowledgeable innocent (AUC = 0.60); (2) the late positive component evoked by source memory could effectively discriminated the guilty from both the knowledgeable innocent (AUC = 0.94) and the unknowledgeable innocent (AUC = 0.84) in one test.
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Affiliation(s)
- Xiaohong Deng
- Department of Psychology, Normal College, Hubei University, Wuhan, China
| | - Xuan Liang
- Department of Psychology, Normal College, Hubei University, Wuhan, China
| | - Xiaofei Zhan
- Department of Psychology, Normal College, Hubei University, Wuhan, China
| | - J Peter Rosenfeld
- Department of Psychology, Institute for Neuroscience, Northwestern University, Evanston, Illinois, USA
| | - Joseph Olson
- Department of Psychology, Institute for Neuroscience, Northwestern University, Evanston, Illinois, USA
| | - Gejun Yan
- Department of Psychology, Normal College, Hubei University, Wuhan, China
| | - Chao Xue
- Department of Psychology, Normal College, Hubei University, Wuhan, China
| | - Yang Lu
- Department of Psychology, Normal College, Hubei University, Wuhan, China
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15
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Madore KP, Wagner AD. Readiness to remember: predicting variability in episodic memory. Trends Cogn Sci 2022; 26:707-723. [PMID: 35786366 PMCID: PMC9622362 DOI: 10.1016/j.tics.2022.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 10/17/2022]
Abstract
Learning and remembering are fundamental to our lives, so what causes us to forget? Answers often highlight preparatory processes that precede learning, as well as mnemonic processes during the act of encoding or retrieval. Importantly, evidence now indicates that preparatory processes that precede retrieval attempts also have powerful influences on memory success or failure. Here, we review recent work from neuroimaging, electroencephalography, pupillometry, and behavioral science to propose an integrative framework of retrieval-period dynamics that explains variance in remembering in the moment and across individuals as a function of interactions among preparatory attention, goal coding, and mnemonic processes. Extending this approach, we consider how a 'readiness to remember' (R2R) framework explains variance in high-level functions of memory and mnemonic disruptions in aging.
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Affiliation(s)
- Kevin P Madore
- Department of Psychology, Stanford University, Stanford, CA 94305, USA.
| | - Anthony D Wagner
- Department of Psychology, Stanford University, Stanford, CA 94305, USA; Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA 94305, USA.
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16
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Spadone S, Tosoni A, Penna SD, Sestieri C. Alpha rhythm modulations in the intraparietal sulcus reflect decision signals during item recognition. Neuroimage 2022; 258:119345. [PMID: 35660462 DOI: 10.1016/j.neuroimage.2022.119345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 05/14/2022] [Accepted: 05/30/2022] [Indexed: 01/05/2023] Open
Abstract
Theoretical work and empirical observations suggest a contribution of regions along the intraparietal sulcus to the process of evidence accumulation during episodic memory retrieval. In the present study, we recorded magnetoencephalographic signals in a group of healthy human participants to test whether the pattern of oscillatory modulations in the lateral parietal lobe is consistent with the mnemonic accumulator hypothesis. To this aim, the dynamic properties and the spatial distribution of MEG oscillatory power modulations were investigated during an item recognition task in which the amount of evidence for old vs. new memory decisions was manipulated across three levels. A data-driven approach was employed to identify brain nodes where oscillatory activity was sensitive to both retrieval success and the amount of evidence for old decisions. The analysis identified three nodes in the left lateral parietal lobe where the event-related desynchronization (ERD) in the alpha frequency band showed both effects. Further analyses revealed that the alpha ERD in the intraparietal sulcus, but not in other parietal nodes: i. showed modulation of duration in response to the amount of evidence for both old and new decisions, ii. was behaviorally significant, and iii. more accurately tracked the subjective memory judgment rather than the objective memory status. The present findings provide support for a recent anatomical-functional model of the parietal involvement in episodic memory retrieval and suggest that the alpha ERD in the intraparietal sulcus might represent a neural signature of the evidence accumulation process during simple memory-based decisions.
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Affiliation(s)
- Sara Spadone
- Department of Neuroscience, Imaging and Clinical Sciences and ITAB, Institute for Advanced Biomedical Technologies, G. d'Annunzio University of Chieti-Pescara, 66100, Italy
| | - Annalisa Tosoni
- Department of Neuroscience, Imaging and Clinical Sciences and ITAB, Institute for Advanced Biomedical Technologies, G. d'Annunzio University of Chieti-Pescara, 66100, Italy
| | - Stefania Della Penna
- Department of Neuroscience, Imaging and Clinical Sciences and ITAB, Institute for Advanced Biomedical Technologies, G. d'Annunzio University of Chieti-Pescara, 66100, Italy
| | - Carlo Sestieri
- Department of Neuroscience, Imaging and Clinical Sciences and ITAB, Institute for Advanced Biomedical Technologies, G. d'Annunzio University of Chieti-Pescara, 66100, Italy.
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17
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Lee K, Mirjalili S, Quadri A, Corbett B, Duarte A. Neural Reinstatement of Overlapping Memories in Young and Older Adults. J Cogn Neurosci 2022; 34:1376-1396. [PMID: 35604351 DOI: 10.1162/jocn_a_01871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
When we update our episodic memories with new information, mnemonic competition between old and new memories may result because of the presence of shared features. Behavioral studies suggest that this competition can lead to proactive interference, resulting in unsuccessful memory updating, particularly for older adults. It is difficult with behavioral data alone to measure the reactivation of old, overlapping memories during retrieval and its impact on memory for new memories. Here, we applied encoding-retrieval representational similarity (ERS) analysis to EEG data to estimate event-specific encoding-related neural reinstatement of old associations during the retrieval of new ones and its impact on memory for new associations in young and older adults. Our results showed that older adults' new associative memory performance was more negatively impacted by proactive interference from old memories than that of young adults. In both age groups, ERS for old associative memories was greater for trials for which new associative memories were forgotten than remembered. In contrast, ERS for new associative memories was greater when they were remembered than forgotten. In addition, older adults showed relatively attenuated target (i.e., new associates) and lure (i.e., old associates) ERS effects compared to younger adults. Collectively, these results suggest that the neural reinstatement of interfering memories during retrieval contributes to proactive interference across age, whereas overall attenuated ERS effect in older adults might reflect their reduced memory fidelity.
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18
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Zhang B, Wang F, Zhang Q, Naya Y. Distinct networks coupled with parietal cortex for spatial representations inside and outside the visual field. Neuroimage 2022; 252:119041. [PMID: 35231630 DOI: 10.1016/j.neuroimage.2022.119041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 11/19/2022] Open
Abstract
Our mental representation of egocentric space is influenced by the disproportionate sensory perception of the body. Previous studies have focused on the neural architecture for egocentric representations within the visual field. However, the space representation underlying the body is still unclear. To address this problem, we applied both functional Magnitude Resonance Imaging (fMRI) and Magnetoencephalography (MEG) to a spatial-memory paradigm by using a virtual environment in which human participants remembered a target location left, right, or back relative to their own body. Both experiments showed larger involvement of the frontoparietal network in representing a retrieved target on the left/right side than on the back. Conversely, the medial temporal lobe (MTL)-parietal network was more involved in retrieving a target behind the participants. The MEG data showed an earlier activation of the MTL-parietal network than that of the frontoparietal network during retrieval of a target location. These findings suggest that the parietal cortex may represent the entire space around the self-body by coordinating two distinct brain networks.
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Affiliation(s)
- Bo Zhang
- School of Psychological and Cognitive Sciences, Peking University, No. 52, Haidian Road, Haidian District, Beijing 100805, China; Beijing Academy of Artificial Intelligence, Beijing, 100084, China; Tsinghua Laboratory of Brain and Intelligence, 160 Chengfu Rd., SanCaiTang Building, Haidian District, Beijing, 100084, China
| | - Fan Wang
- State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing 100101, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing 100101, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Qi Zhang
- School of Psychological and Cognitive Sciences, Peking University, No. 52, Haidian Road, Haidian District, Beijing 100805, China; School of Educational Science, Minnan Normal University, No. 36, Xianqianzhi Street, Zhangzhou 363000, China
| | - Yuji Naya
- School of Psychological and Cognitive Sciences, Peking University, No. 52, Haidian Road, Haidian District, Beijing 100805, China; IDG/McGovern Institute for Brain Research at Peking University, No. 52, Haidian Road, Haidian District, Beijing 100805, China; Center for Life Sciences, Peking University, No. 52, Haidian Road, Haidian District, Beijing 100805, China; Beijing Key Laboratory of Behavior and Mental Health, Peking University, No. 52, Haidian Road, Haidian District, Beijing 100805, China.
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19
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Treder MS, Charest I, Michelmann S, Martín-Buro MC, Roux F, Carceller-Benito F, Ugalde-Canitrot A, Rollings DT, Sawlani V, Chelvarajah R, Wimber M, Hanslmayr S, Staresina BP. The hippocampus as the switchboard between perception and memory. Proc Natl Acad Sci U S A 2021; 118:e2114171118. [PMID: 34880133 PMCID: PMC8685930 DOI: 10.1073/pnas.2114171118] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2021] [Indexed: 12/30/2022] Open
Abstract
Adaptive memory recall requires a rapid and flexible switch from external perceptual reminders to internal mnemonic representations. However, owing to the limited temporal or spatial resolution of brain imaging modalities used in isolation, the hippocampal-cortical dynamics supporting this process remain unknown. We thus employed an object-scene cued recall paradigm across two studies, including intracranial electroencephalography (iEEG) and high-density scalp EEG. First, a sustained increase in hippocampal high gamma power (55 to 110 Hz) emerged 500 ms after cue onset and distinguished successful vs. unsuccessful recall. This increase in gamma power for successful recall was followed by a decrease in hippocampal alpha power (8 to 12 Hz). Intriguingly, the hippocampal gamma power increase marked the moment at which extrahippocampal activation patterns shifted from perceptual cue toward mnemonic target representations. In parallel, source-localized EEG alpha power revealed that the recall signal progresses from hippocampus to posterior parietal cortex and then to medial prefrontal cortex. Together, these results identify the hippocampus as the switchboard between perception and memory and elucidate the ensuing hippocampal-cortical dynamics supporting the recall process.
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Affiliation(s)
- Matthias S Treder
- School of Computer Science and Informatics, Cardiff University, Cardiff CF24 3AA, United Kingdom
| | - Ian Charest
- School of Psychology and Centre for Human Brain Health, University of Birmingham, Birmingham B15 2TT, United Kingdom
- cerebrUM, Département de Psychologie, Université de Montréal, Montreal, QC H2V 259, Canada
| | - Sebastian Michelmann
- Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544
- Department of Psychology, Princeton University, Princeton, NJ 08540
| | - María Carmen Martín-Buro
- Laboratory of Cognitive and Computational Neuroscience, Center for Biomedical Technology 28223 Madrid, Spain
- Faculty of Health Sciences, King Juan Carlos University 28933 Madrid, Spain
| | - Frédéric Roux
- School of Psychology and Centre for Human Brain Health, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | | | - Arturo Ugalde-Canitrot
- Epilepsy Monitoring Unit, Neurology and Clinical Neurophysiology Service, Hospital Universitario La Paz 28046 Madrid, Spain
- School of Medicine, Universidad Francisco de Vitoria 28223 Madrid, Spain
| | - David T Rollings
- School of Psychology and Centre for Human Brain Health, University of Birmingham, Birmingham B15 2TT, United Kingdom
- Complex Epilepsy and Surgery Service, Neurophysiology Department, Queen Elizabeth Hospital, Birmingham B15 2GW, United Kingdom
| | - Vijay Sawlani
- School of Psychology and Centre for Human Brain Health, University of Birmingham, Birmingham B15 2TT, United Kingdom
- Complex Epilepsy and Surgery Service, Neuroradiology Department, Queen Elizabeth Hospital, Birmingham B15 2GW, United Kingdom
| | - Ramesh Chelvarajah
- School of Psychology and Centre for Human Brain Health, University of Birmingham, Birmingham B15 2TT, United Kingdom
- Complex Epilepsy and Surgery Service, Neurosurgery Department, Queen Elizabeth Hospital, Birmingham B15 2GW, United Kingdom
| | - Maria Wimber
- Institute of Neuroscience and Psychology, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Simon Hanslmayr
- Institute of Neuroscience and Psychology, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Bernhard P Staresina
- School of Psychology and Centre for Human Brain Health, University of Birmingham, Birmingham B15 2TT, United Kingdom;
- Department of Experimental Psychology, University of Oxford, Oxford OX2 6GG, United Kingdom
- Oxford Centre for Human Brain Activity, Wellcome Centre for Integrative Neuroimaging, Department of Psychiatry, University of Oxford, Oxford OX3 7JX, United Kingdom
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20
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Griffiths BJ, Martín-Buro MC, Staresina BP, Hanslmayr S. Disentangling neocortical alpha/beta and hippocampal theta/gamma oscillations in human episodic memory formation. Neuroimage 2021; 242:118454. [PMID: 34358658 PMCID: PMC8463840 DOI: 10.1016/j.neuroimage.2021.118454] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/13/2021] [Accepted: 08/03/2021] [Indexed: 12/12/2022] Open
Abstract
To form an episodic memory, we must first process a vast amount of sensory information about the to-be-encoded event and then bind these sensory representations together to form a coherent memory trace. While these two cognitive capabilities are thought to have two distinct neural origins, with neocortical alpha/beta oscillations supporting information representation and hippocampal theta-gamma phase-amplitude coupling supporting mnemonic binding, evidence for a dissociation between these two neural markers is conspicuously absent. To address this, seventeen human participants completed an associative memory task that first involved processing information about three sequentially-presented stimuli, and then binding these stimuli together into a coherent memory trace, all the while undergoing MEG recordings. We found that decreases in neocortical alpha/beta power during sequence perception, but not mnemonic binding, correlated with enhanced memory performance. Hippocampal theta/gamma phase-amplitude coupling, however, showed the opposite pattern; increases during mnemonic binding (but not sequence perception) correlated with enhanced memory performance. These results demonstrate that memory-related decreases in neocortical alpha/beta power and memory-related increases in hippocampal theta/gamma phase-amplitude coupling arise at distinct stages of the memory formation process. We speculate that this temporal dissociation reflects a functional dissociation in which neocortical alpha/beta oscillations could support the processing of incoming information relevant to the memory, while hippocampal theta-gamma phase-amplitude coupling could support the binding of this information into a coherent memory trace.
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Affiliation(s)
- Benjamin J Griffiths
- Department of Psychology, Ludwig-Maximilians-University, Munich, Germany; School of Psychology, University of Birmingham, UK; Centre for Human Brain Health, University of Birmingham, UK.
| | | | - Bernhard P Staresina
- School of Psychology, University of Birmingham, UK; Centre for Human Brain Health, University of Birmingham, UK; Department of Experimental Psychology, University of Oxford, UK
| | - Simon Hanslmayr
- School of Psychology, University of Birmingham, UK; Centre for Human Brain Health, University of Birmingham, UK; Institute for Neuroscience and Psychology, University of Glasgow, UK.
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21
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Jia X, Gao C, Li B, Shinkareva SV, Guo C. Effects of retrieval and emotion on within-item associative memory - Evidence from ERP and oscillatory subsequent memory effects. Biol Psychol 2021; 166:108222. [PMID: 34758371 DOI: 10.1016/j.biopsycho.2021.108222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 11/26/2022]
Abstract
Previous studies have shown the effects of retrieval practice and emotion on associative memory separately. However, it is yet not clear what are the related neural mechanisms and how the two factors together influence associative memory? We examined this question by instructing participants to memorize emotional or neutral words using different ways of learning. Behaviorally, the source memory was enhanced by the retrieval practice compared to the restudy condition, and impaired by the negative compared to the neutral condition without an interaction. Consistent neural effects of retrieval practice were also found, in which subsequent memory effects (SME) of 500-700 ms parietal ERPs and alpha desynchronization were found for the retrieval practice but not for the restudy. No significant difference of SME for ERPs and time-frequency analyses regarding the emotion effect was found. These results demonstrated the neural mechanism for the effects of emotion and retrieval practice on subsequent memory.
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Affiliation(s)
- Xi Jia
- School of Psychology, Beijing Key Laboratory of Learning and Cognition, Capital Normal University, 10080 Beijing, PR China; Institute of Brain Science and Department of Physiology, School of Basic Medical Sciences, Hangzhou Normal University, 311100 Hangzhou, PR China
| | - Chuanji Gao
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Montessorilaan 3, 6525 HR Nijmegen, The Netherlands
| | - Baoming Li
- Institute of Brain Science and Department of Physiology, School of Basic Medical Sciences, Hangzhou Normal University, 311100 Hangzhou, PR China
| | - Svetlana V Shinkareva
- Department of Psychology, Institute for Mind and Brain, University of South Carolina, Columbia 29201, SC, USA
| | - Chunyan Guo
- School of Psychology, Beijing Key Laboratory of Learning and Cognition, Capital Normal University, 10080 Beijing, PR China.
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22
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Puttaert D, Wens V, Fery P, Rovai A, Trotta N, Coquelet N, De Breucker S, Sadeghi N, Coolen T, Goldman S, Peigneux P, Bier JC, De Tiège X. Decreased Alpha Peak Frequency Is Linked to Episodic Memory Impairment in Pathological Aging. Front Aging Neurosci 2021; 13:711375. [PMID: 34475819 PMCID: PMC8406997 DOI: 10.3389/fnagi.2021.711375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 07/21/2021] [Indexed: 12/04/2022] Open
Abstract
The Free and Cued Selective Reminding Test (FCSRT) is a largely validated neuropsychological test for the identification of amnestic syndrome from the early stage of Alzheimer's disease (AD). Previous electrophysiological data suggested a slowing down of the alpha rhythm in the AD-continuum as well as a key role of this rhythmic brain activity for episodic memory processes. This study therefore investigates the link between alpha brain activity and alterations in episodic memory as assessed by the FCSRT. For that purpose, 37 patients with altered FCSRT performance underwent a comprehensive neuropsychological assessment, supplemented by 18F-fluorodeoxyglucose positron emission tomography/structural magnetic resonance imaging (18FDG-PET/MR), and 10 min of resting-state magnetoencephalography (MEG). The individual alpha peak frequency (APF) in MEG resting-state data was positively correlated with patients' encoding efficiency as well as with the efficacy of semantic cues in facilitating patients' retrieval of previous stored word. The APF also correlated positively with patients' hippocampal volume and their regional glucose consumption in the posterior cingulate cortex. Overall, this study demonstrates that alterations in the ability to learn and store new information for a relatively short-term period are related to a slowing down of alpha rhythmic activity, possibly due to altered interactions in the extended mnemonic system. As such, a decreased APF may be considered as an electrophysiological correlate of short-term episodic memory dysfunction accompanying pathological aging.
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Affiliation(s)
- Delphine Puttaert
- Laboratoire de Cartographie Fonctionnelle du Cerveau, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
- Neuropsychology and Functional Neuroimaging Research Unit (UR2NF), Center for Research in Cognition and Neurosciences, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
| | - Vincent Wens
- Laboratoire de Cartographie Fonctionnelle du Cerveau, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
- Clinic of Functional Neuroimaging, Service of Nuclear Medicine, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Patrick Fery
- Neuropsychology and Functional Neuroimaging Research Unit (UR2NF), Center for Research in Cognition and Neurosciences, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
- Service of Neuropsychology and Speech Therapy, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Antonin Rovai
- Laboratoire de Cartographie Fonctionnelle du Cerveau, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
- Clinic of Functional Neuroimaging, Service of Nuclear Medicine, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Nicola Trotta
- Laboratoire de Cartographie Fonctionnelle du Cerveau, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
- Clinic of Functional Neuroimaging, Service of Nuclear Medicine, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Nicolas Coquelet
- Laboratoire de Cartographie Fonctionnelle du Cerveau, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
| | - Sandra De Breucker
- Department of Geriatrics, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Niloufar Sadeghi
- Department of Radiology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Tim Coolen
- Department of Radiology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Serge Goldman
- Laboratoire de Cartographie Fonctionnelle du Cerveau, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
- Clinic of Functional Neuroimaging, Service of Nuclear Medicine, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Philippe Peigneux
- Neuropsychology and Functional Neuroimaging Research Unit (UR2NF), Center for Research in Cognition and Neurosciences, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
| | - Jean-Christophe Bier
- Department of Neurology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Xavier De Tiège
- Laboratoire de Cartographie Fonctionnelle du Cerveau, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium
- Clinic of Functional Neuroimaging, Service of Nuclear Medicine, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
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23
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Wirth M, Pastötter B, Bäuml KHT. Oscillatory Correlates of Selective Restudy. Front Hum Neurosci 2021; 15:679823. [PMID: 34177499 PMCID: PMC8232054 DOI: 10.3389/fnhum.2021.679823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/20/2021] [Indexed: 11/24/2022] Open
Abstract
Prior behavioral work has shown that selective restudy of some studied items leaves recall of the other studied items unaffected when lag between study and restudy is short, but improves recall of the other items when lag is prolonged. The beneficial effect has been attributed to context retrieval, assuming that selective restudy reactivates the context at study and thus provides a retrieval cue for the other items (Bäuml, 2019). Here the results of two experiments are reported, in each of which subjects studied a list of items and then, after a short 2-min or a prolonged 10-min lag, restudied some of the list items. Participants' electroencephalography (EEG) was recorded during both the study and restudy phases. In Experiment 2, but not in Experiment 1, subjects engaged in a mental context reinstatement task immediately before the restudy phase started, trying to mentally reinstate the study context. Results of Experiment 1 revealed a theta/alpha power increase from study to restudy after short lag and an alpha/beta power decrease after long lag. Engagement in the mental context reinstatement task in Experiment 2 eliminated the decrease in alpha/beta power. The results are consistent with the view that the observed alpha/beta decrease reflects context retrieval, which became obsolete when there was preceding mental context reinstatement.
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Affiliation(s)
- Michael Wirth
- Department of Psychology, Regensburg University, Regensburg, Germany
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24
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Alpha/beta power decreases during episodic memory formation predict the magnitude of alpha/beta power decreases during subsequent retrieval. Neuropsychologia 2021; 153:107755. [PMID: 33515568 DOI: 10.1016/j.neuropsychologia.2021.107755] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 01/11/2021] [Accepted: 01/14/2021] [Indexed: 01/02/2023]
Abstract
Episodic memory retrieval is characterised by the vivid reinstatement of information about a personally-experienced event. Growing evidence suggests that this reinstatement is supported by reductions in the spectral power of alpha/beta activity. Given that the amount of information that can be recalled depends on the amount of information that was originally encoded, information-based accounts of alpha/beta activity would suggest that retrieval-related alpha/beta power decreases similarly depend upon decreases in alpha/beta power during encoding. To test this hypothesis, seventeen human participants completed a sequence-learning task while undergoing concurrent MEG recordings. Regression-based analyses were then used to estimate how alpha/beta power decreases during encoding predicted alpha/beta power decreases during retrieval on a trial-by-trial basis. When subjecting these parameter estimates to group-level analysis, we find evidence to suggest that retrieval-related alpha/beta (7-15Hz) power decreases fluctuate as a function of encoding-related alpha/beta power decreases. These results suggest that retrieval-related alpha/beta power decreases are contingent on the decrease in alpha/beta power that arose during encoding. Subsequent analysis uncovered no evidence to suggest that these alpha/beta power decreases reflect stimulus identity, indicating that the contingency between encoding- and retrieval-related alpha/beta power reflects the reinstatement of a neurophysiological operation, rather than neural representation, during episodic memory retrieval.
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25
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Avila J, Perry G. A Multilevel View of the Development of Alzheimer's Disease. Neuroscience 2020; 457:283-293. [PMID: 33246061 DOI: 10.1016/j.neuroscience.2020.11.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/28/2020] [Accepted: 11/10/2020] [Indexed: 12/12/2022]
Abstract
Every year the Alzheimer's Association publishes a report that provides facts and figures indicating the public health, social and economic impact of Alzheimer's disease (AD). In addition, there are a number of reviews on the disease for general readers. Also, at congresses, AD is analyzed at different but not always related levels, leading to an "elephant as seen by blind men situation" for many of the participants. The review presented herein seeks to provide readers with a holistic view of how AD develops from various perspectives: the whole human organism, brain, circuits, neurons, cellular hallmarks, and molecular level.
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Affiliation(s)
- Jesús Avila
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), 28049 Madrid, Spain; Network Centre for Biomedical Research in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain.
| | - George Perry
- College of Sciences, University of Texas at San Antonio, San Antonio, TX, USA.
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Karlsson AE, Wehrspaun CC, Sander MC. Item recognition and lure discrimination in younger and older adults are supported by alpha/beta desynchronization. Neuropsychologia 2020; 148:107658. [DOI: 10.1016/j.neuropsychologia.2020.107658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 09/10/2020] [Accepted: 10/07/2020] [Indexed: 02/07/2023]
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Goyal A, Miller J, Qasim SE, Watrous AJ, Zhang H, Stein JM, Inman CS, Gross RE, Willie JT, Lega B, Lin JJ, Sharan A, Wu C, Sperling MR, Sheth SA, McKhann GM, Smith EH, Schevon C, Jacobs J. Functionally distinct high and low theta oscillations in the human hippocampus. Nat Commun 2020; 11:2469. [PMID: 32424312 PMCID: PMC7235253 DOI: 10.1038/s41467-020-15670-6] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 03/23/2020] [Indexed: 11/08/2022] Open
Abstract
Based on rodent models, researchers have theorized that the hippocampus supports episodic memory and navigation via the theta oscillation, a ~4-10 Hz rhythm that coordinates brain-wide neural activity. However, recordings from humans have indicated that hippocampal theta oscillations are lower in frequency and less prevalent than in rodents, suggesting interspecies differences in theta's function. To characterize human hippocampal theta, we examine the properties of theta oscillations throughout the anterior-posterior length of the hippocampus as neurosurgical subjects performed a virtual spatial navigation task. During virtual movement, we observe hippocampal oscillations at multiple frequencies from 2 to 14 Hz. The posterior hippocampus prominently displays oscillations at ~8-Hz and the precise frequency of these oscillations correlates with the speed of movement, implicating these signals in spatial navigation. We also observe slower ~3 Hz oscillations, but these signals are more prevalent in the anterior hippocampus and their frequency does not vary with movement speed. Our results converge with recent findings to suggest an updated view of human hippocampal electrophysiology. Rather than one hippocampal theta oscillation with a single general role, high- and low-frequency theta oscillations, respectively, may reflect spatial and non-spatial cognitive processes.
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Affiliation(s)
- Abhinav Goyal
- Mayo Clinic Medical Scientist Training Program, Mayo Clinic College of Medicine and Science, Mayo Clinic, Rochester, MN, 55905, USA
| | - Jonathan Miller
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Salman E Qasim
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | | | - Honghui Zhang
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Joel M Stein
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Cory S Inman
- Department of Neurosurgery, Emory University, Atlanta, GA, 30322, USA
| | - Robert E Gross
- Department of Neurosurgery, Emory University, Atlanta, GA, 30322, USA
| | - Jon T Willie
- Department of Neurosurgery, Emory University, Atlanta, GA, 30322, USA
| | - Bradley Lega
- Department of Neurological Surgery, University of Texas Southwestern, Dallas, TX, 75390, USA
| | - Jui-Jui Lin
- Department of Neurological Surgery, University of Texas Southwestern, Dallas, TX, 75390, USA
| | - Ashwini Sharan
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, 9107, USA
- Jefferson Comprehensive Epilepsy Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Chengyuan Wu
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, 9107, USA
| | - Michael R Sperling
- Jefferson Comprehensive Epilepsy Center, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Sameer A Sheth
- Department of Neurological Surgery, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Guy M McKhann
- Department of Neurosurgery, Columbia University Medical Center, New York, NY, 10032, USA
| | - Elliot H Smith
- Department of Neurosurgery, University of Utah, Salt Lake City, UT, USA
| | - Catherine Schevon
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Joshua Jacobs
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA.
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