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Chen S, Zhang C, Yang H, Peng L, Xie H, Lv Z, Hou ZG. A Multi-Modal Classification Method for Early Diagnosis of Mild Cognitive Impairment and Alzheimer's Disease Using Three Paradigms With Various Task Difficulties. IEEE Trans Neural Syst Rehabil Eng 2024; 32:1477-1486. [PMID: 38568773 DOI: 10.1109/tnsre.2024.3379891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Alzheimer's Disease (AD) accounts for the majority of dementia, and Mild Cognitive Impairment (MCI) is the early stage of AD. Early and accurate diagnosis of dementia plays a vital role in more targeted treatments and effectively halting disease progression. However, the clinical diagnosis of dementia requires various examinations, which are expensive and require a high level of expertise from the doctor. In this paper, we proposed a classification method based on multi-modal data including Electroencephalogram (EEG), eye tracking and behavioral data for early diagnosis of AD and MCI. Paradigms with various task difficulties were used to identify different severity of dementia: eye movement task and resting-state EEG tasks were used to detect AD, while eye movement task and delayed match-to-sample task were used to detect MCI. Besides, the effects of different features were compared and suitable EEG channels were selected for the detection. Furthermore, we proposed a data augmentation method to enlarge the dataset, designed an extra ERPNet feature extract layer to extract multi-modal features and used domain-adversarial neural network to improve the performance of MCI diagnosis. We achieved an average accuracy of 88.81% for MCI diagnosis and 100% for AD diagnosis. The results of this paper suggest that our classification method can provide a feasible and affordable way to diagnose dementia.
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Gómez-Velázquez FR, González-Garrido AA, Ruiz-Stovel VD, Villuendas-González ER, Martínez-Ramos A, Altamirano-Ríos M. Event-related brain potentials study of arithmetic fact retrieval in children with different math achievement levels. JOURNAL OF COGNITIVE PSYCHOLOGY 2022. [DOI: 10.1080/20445911.2022.2090571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | | | | | | | - Alicia Martínez-Ramos
- Departamento de Neurociencias. CUCS, Universidad de Guadalajara, Guadalajara, Mexico
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Schouwenaars IT, de Dreu MJ, Rutten GJM, Ramsey NF, Jansma JM. Processing of Targets and Non-targets in Verbal Working Memory. Neuroscience 2020; 429:273-281. [PMID: 31982465 DOI: 10.1016/j.neuroscience.2020.01.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 11/15/2022]
Abstract
In this study we used functional MRI (fMRI) to examine whether defining a stimulus as a target affects brain activation associated with a verbal working memory (WM) task. Seventeen healthy right-handed volunteers performed a Sternberg task with three consonants as memory set. We performed a region of interest based fMRI analysis to examine differences in brain activity patterns between targets and non-targets. Non-target brain activity was subtracted from target activity and hemispheric and fronto-parietal differences were tested by conducting a MANOVA. Participants responded correctly to 97.5% of the stimuli. The fMRI results showed a hemisphere by fronto-parietal location interaction, where targets evoked increased activity in the right frontal regions compared to non-targets, whereas the left frontal task activation did not differ between targets and non-targets. In the parietal regions, targets evoked increased activity compared to non-targets in the lateral anterior, but not the medial posterior part. Our study revealed that defining a stimulus as a target within a verbal WM task evokes an increase in brain activity in right frontal brain regions, compared to non-targets. Our results suggest an important hemispheric differentiation in target processing, in which the right frontal cortex is predominantly involved in processes associated with target stimuli. The left frontal cortex does not differentiate between processing target and non-target stimuli, suggesting involvement in WM processes that are independent of stimulus type. Parietal, the lateral anterior part is predominantly involved in target processing, while the medial posterior part does not differentiate between target and non-target processing.
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Affiliation(s)
- I T Schouwenaars
- Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands.
| | - M J de Dreu
- Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | - G J M Rutten
- Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands
| | - N F Ramsey
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | - J M Jansma
- Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
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Wang P, Li R, Liu B, Wang C, Huang Z, Dai R, Song B, Yuan X, Yu J, Li J. Altered Static and Temporal Dynamic Amplitude of Low-Frequency Fluctuations in the Background Network During Working Memory States in Mild Cognitive Impairment. Front Aging Neurosci 2019; 11:152. [PMID: 31316370 PMCID: PMC6609854 DOI: 10.3389/fnagi.2019.00152] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 06/11/2019] [Indexed: 11/30/2022] Open
Abstract
Previous studies investigating working memory performance in patients with mild cognitive impairment (MCI) have mainly focused on the neural mechanisms of alterations in activation. To date, very few studies have investigated background network alterations in the working memory state. Therefore, the present study investigated the static and temporal dynamic changes in the background network in MCI patients during a working memory task. A hybrid delayed-match-to-sample task was used to examine working memory performance in MCI patients. Functional magnetic resonance imaging (fMRI) data were collected and the marker of amplitude of low-frequency fluctuations (ALFF) was used to investigate alterations in the background network. The present study demonstrated static and dynamic alterations of ALFF in MCI patients during working memory tasks, relative to the resting state. Traditional static analysis revealed that ALFF decreased in the right ventrolateral prefrontal cortex (VLPFC), right dorsolateral PFC (DLPFC), and left supplementary motor area for normal controls (NCs) in the working memory state. However, the same regions showed increased ALFF in MCI patients. Furthermore, relative to NCs, MCI patients demonstrated altered performance-related functional connectivity (FC) patterns, with the right VLPFC and right DLPFC as ROIs. In terms of temporal dynamic analysis, the present study found that in the working memory state dynamic ALFF of bilateral thalamus regions was increased in NCs but decreased in MCI patients. Additionally, MCI patients demonstrated altered performance-related coefficient of variation patterns; the regions in MCI patients were larger and more widely distributed in the parietal and temporal lobes, relative to NCs. This is the first study to examine static and temporal dynamic alterations of ALFF in the background network of MCI patients in working memory states. The results extend previous studies by providing a new perspective on the neural mechanisms of working memory deficits in MCI patients.
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Affiliation(s)
- Pengyun Wang
- CAS Key Laboratory of Mental Health, Center on Aging Psychology, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Rui Li
- CAS Key Laboratory of Mental Health, Center on Aging Psychology, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Bei Liu
- Department of Human Resources, Institute of Disaster Prevention, Beijing, China
| | - Cheng Wang
- Department of Psychology, Zhejiang Normal University, Jinhua, China
| | - Zirui Huang
- Department of Anesthesiology and Center for Consciousness Science, University of Michigan, Ann Arbor, MI, United States
| | - Rui Dai
- State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Bogeng Song
- School of Psychology, Capital Normal University, Beijing, China
| | - Xiao Yuan
- School of Sociology, China University of Political Science and Law, Beijing, China
| | - Jing Yu
- Faculty of Psychology, Southwest University, Chongqing, China
| | - Juan Li
- CAS Key Laboratory of Mental Health, Center on Aging Psychology, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
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Broster LS, Jenkins SL, Holmes SD, Jicha GA, Jiang Y. Low Arousal Positive Emotional Stimuli Attenuate Aberrant Working Memory Processing in Persons with Mild Cognitive Impairment. J Alzheimers Dis 2018; 60:1333-1349. [PMID: 29060938 DOI: 10.3233/jad-170233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Emotional enhancement effects on memory have been reported to mitigate the pathophysiology of Alzheimer's disease (AD). However, relative to their manifestation in persons without pathologic aging, these effects may be reduced in magnitude or even deleterious, especially in tasks that more closely model ecologic memory performance. Based upon a synthesis of such reports, we hypothesized that in persons with AD low arousal positive stimuli would evoke relatively intact emotional enhancement effects, but that high arousal negative stimuli would evoke disordered emotional enhancement effects. To assess this, participants with and without mild cognitive impairment (MCI) presumed to be due to AD performed an emotionally-valenced short-term memory task while encephalography was recorded. Results indicated that for persons with MCI, high arousal negative stimuli led to working memory processing patterns previously associated with MCI presumed due to AD and dementia of the Alzheimer-type. In contrast, low arousal positive stimuli evoked a processing pattern similar to MCI participants' unaffected spouses. Our current findings suggest that low arousal positive stimuli attenuate working memory deficits of MCI due to AD.
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Affiliation(s)
- Lucas S Broster
- Department of Behavioral Science, University of Kentucky, Lexington, KY, USA.,Department of Psychiatry, University of California, San Francisco, CA, USA
| | - Shonna L Jenkins
- Department of Behavioral Science, University of Kentucky, Lexington, KY, USA.,Movement Disorders Program, Medical University of South Carolina, Charleston, SC, USA
| | - Sarah D Holmes
- Department of Gerontology, University of Maryland, Baltimore, MD, USA.,Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, USA
| | - Gregory A Jicha
- Department of Behavioral Science, University of Kentucky, Lexington, KY, USA.,Department of Neurology, University of Kentucky, Lexington, KY, USA.,Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, USA
| | - Yang Jiang
- Department of Behavioral Science, University of Kentucky, Lexington, KY, USA.,Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, USA
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Broster LS, Li J, Wagner B, Smith CD, Jicha GA, Schmitt FA, Munro N, Haney RH, Jiang Y. Spared behavioral repetition effects in Alzheimer's disease linked to an altered neural mechanism at posterior cortex. J Clin Exp Neuropsychol 2018; 40:761-776. [PMID: 29463181 DOI: 10.1080/13803395.2018.1430230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Individuals with dementia of the Alzheimer type (AD) classically show disproportionate impairment in measures of working memory, but repetition learning effects are relatively preserved. As AD affects brain regions implicated in both working memory and repetition effects, the neural basis of this discrepancy is poorly understood. We hypothesized that the posterior repetition effect could account for this discrepancy due to the milder effects of AD at visual cortex. METHOD Participants with early AD, amnestic mild cognitive impairment (MCI), and healthy controls performed a working memory task with superimposed repetition effects while electroencephalography was collected to identify possible neural mechanisms of preserved repetition effects. RESULTS Participants with AD showed preserved behavioral repetition effects and a change in the posterior repetition effect. CONCLUSION Visual cortex may play a role in maintained repetition effects in persons with early AD.
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Affiliation(s)
- Lucas S Broster
- a Department of Behavioral Science , University of Kentucky College of Medicine , Lexington , KY , USA.,b Department of Psychiatry , University of California , San Francisco , CA , USA
| | - Juan Li
- a Department of Behavioral Science , University of Kentucky College of Medicine , Lexington , KY , USA.,c Key Laboratory of Mental Health , Institute of Psychology, Chinese Academy of Sciences , Beijing , China
| | - Benjamin Wagner
- a Department of Behavioral Science , University of Kentucky College of Medicine , Lexington , KY , USA
| | - Charles D Smith
- d Department of Neurology , University of Kentucky College of Medicine , Lexington , KY , USA.,e Sanders-Brown Center on Aging , University of Kentucky College of Medicine , Lexington , KY , USA.,f Magnetic Resonance Imaging and Spectroscopy Center, University of Kentucky College of Medicine , Lexington , KY , USA
| | - Gregory A Jicha
- d Department of Neurology , University of Kentucky College of Medicine , Lexington , KY , USA.,e Sanders-Brown Center on Aging , University of Kentucky College of Medicine , Lexington , KY , USA
| | - Frederick A Schmitt
- b Department of Psychiatry , University of California , San Francisco , CA , USA.,d Department of Neurology , University of Kentucky College of Medicine , Lexington , KY , USA.,e Sanders-Brown Center on Aging , University of Kentucky College of Medicine , Lexington , KY , USA
| | - Nancy Munro
- g Oak Ridge National Laboratory , Oak Ridge , TN , USA
| | - Ryan H Haney
- a Department of Behavioral Science , University of Kentucky College of Medicine , Lexington , KY , USA
| | - Yang Jiang
- a Department of Behavioral Science , University of Kentucky College of Medicine , Lexington , KY , USA.,e Sanders-Brown Center on Aging , University of Kentucky College of Medicine , Lexington , KY , USA.,f Magnetic Resonance Imaging and Spectroscopy Center, University of Kentucky College of Medicine , Lexington , KY , USA
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Yu J, Li R, Jiang Y, Broster LS, Li J. Altered Brain Activities Associated with Neural Repetition Effects in Mild Cognitive Impairment Patients. J Alzheimers Dis 2018; 53:693-704. [PMID: 27176074 DOI: 10.3233/jad-160086] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Older adults with mild cognitive impairment (MCI) manifest impaired explicit memory. However, studies on implicit memory such as repetition effects in persons with MCI have been limited. In the present study, 17 MCI patients and 16 healthy normal controls (NC) completed a modified delayed-match-to-sample task while undergoing functional magnetic resonance imaging. We aim to examine the neural basis of repetition; specifically, to elucidate whether and how repetition-related brain responses are altered in participants with MCI. When repeatedly rejecting distracters, both NC and MCI showed similar behavioral repetition effects; however, in both whole-brain and region-of-interest analyses of functional data, persons with MCI showed reduced repetition-driven suppression in the middle occipital and middle frontal gyrus. Further, individual difference analysis found that activation in the left middle occipital gyrus was positively correlated with rejecting reaction time and negatively correlated with accuracy rate, suggesting a predictor of repetition behavioral performance. These findings provide new evidence to support the view that neural mechanisms of repetition effect are altered in MCI who manifests compensatory repetition-related brain activities along with their neuropathology.
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Affiliation(s)
- Jing Yu
- Center on Aging Psychology, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.,Faculty of Psychology, Southwest University, Chongqing, China
| | - Rui Li
- Center on Aging Psychology, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Yang Jiang
- University of Kentucky, College of Medicine, Lexington, KY, USA
| | - Lucas S Broster
- University of Kentucky, College of Medicine, Lexington, KY, USA
| | - Juan Li
- Center on Aging Psychology, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
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Wang P, Li R, Yu J, Huang Z, Yan Z, Zhao K, Li J. Altered Distant Synchronization of Background Network in Mild Cognitive Impairment during an Executive Function Task. Front Behav Neurosci 2017; 11:174. [PMID: 29018338 PMCID: PMC5614929 DOI: 10.3389/fnbeh.2017.00174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 09/05/2017] [Indexed: 11/20/2022] Open
Abstract
Few studies to date have investigated the background network in the cognitive state relying on executive function in mild cognitive impairment (MCI) patients. Using the index of degree of centrality (DC), we explored distant synchronization of background network in MCI during a hybrid delayed-match-to-sample task (DMST), which mainly relies on the working memory component of executive function. We observed significant interactions between group and cognitive state in the bilateral posterior cingulate cortex (PCC) and the ventral subregion of precuneus. For normal control (NC) group, the long distance functional connectivity (FC) of the PCC/precuneus with the other regions of the brain was higher in rest state than that working memory state. For MCI patients, however, this pattern altered. There was no significant difference between rest and working memory state. The similar pattern was observed in the other cluster located in the right angular gyrus. To examine whether abnormal DC in PCC/precuneus and angular gyrus partially resulted from the deficit of FC between these regions and the other parts in the whole brain, we conducted a seed-based correlation analysis with these regions as seeds. The results indicated that the FC between bilateral PCC/precuneus and the right inferior parietal lobule (IPL) increased from rest to working memory state for NC participants. For MCI patients, however, there was no significant change between rest and working memory state. The similar pattern was observed for the FC between right angular gyrus and right anterior insula. However, there was no difference between MCI and NC groups in global efficiency and modularity. It may indicate a lack of efficient reorganization from rest state to a working memory state in the brain network of MCI patients. The present study demonstrates the altered distant synchronization of background network in MCI during a task relying on executive function. The results provide a new perspective regarding the neural mechanisms of executive function deficits in MCI patients, and extend our understanding of brain patterns in task-evoked cognitive states.
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Affiliation(s)
- Pengyun Wang
- Center on Aging Psychology, CAS Key Laboratory of Mental Health, Institute of PsychologyBeijing, China.,Department of Psychology, University of Chinese Academy of SciencesBeijing, China
| | - Rui Li
- Center on Aging Psychology, CAS Key Laboratory of Mental Health, Institute of PsychologyBeijing, China.,Department of Psychology, University of Chinese Academy of SciencesBeijing, China
| | - Jing Yu
- Faculty of Psychology, Southwest UniversityChongqing, China
| | - Zirui Huang
- Institute of Mental Health Research, University of OttawaOttawa, ON, Canada
| | - Zhixiong Yan
- School of Education Science, Guangxi Teachers Education UniversityNanning, China
| | - Ke Zhao
- Center on Aging Psychology, CAS Key Laboratory of Mental Health, Institute of PsychologyBeijing, China.,Department of Psychology, University of Chinese Academy of SciencesBeijing, China
| | - Juan Li
- Center on Aging Psychology, CAS Key Laboratory of Mental Health, Institute of PsychologyBeijing, China.,Department of Psychology, University of Chinese Academy of SciencesBeijing, China.,State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of SciencesBeijing, China
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Role of the Hippocampus in Distinct Memory Traces: Timing of Match and Mismatch Enhancement Revealed by Intracranial Recording. Neurosci Bull 2017; 33:664-674. [PMID: 28861724 DOI: 10.1007/s12264-017-0172-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 06/07/2017] [Indexed: 10/19/2022] Open
Abstract
A previous functional magnetic resonance imaging study reported evidence for parallel memory traces in the hippocampus: a controlled match signal detecting matches to internally-generated goal states and an automatic mismatch signal identifying unpredicted perceptual novelty. However, the timing information in this process is unknown. In the current study, facilitated by the high spatial and temporal resolution of intracranial recording from human patients, we confirmed that the left posterior hippocampus played an important role in the goal match enhancement effect, in which combinations of object identity and location were involved. We also found that this effect happened within 520 ms to 735 ms after the probe onset, ~150 ms later than the perceptual mismatch enhancement found bilaterally in both the anterior and posterior hippocampus. More specifically, the latency of the perceptual mismatch enhancement effect of the right hippocampus was positively correlated with the performance accuracy. These results suggested that the hippocampus is crucial in working memory if features binding with location are involved in the task and the goal match enhancement effect happens after perceptual mismatch enhancement, implying the dissociation of different components of working memory at the hippocampus. Moreover, single trial decoding results suggested that the intracranial field potential response in the right hippocampus can classify the match or switch task. This is consistent with the findings that the right hippocampal activity observed during the simulation of the future events may reflect the encoding of the simulation into memory.
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Jiang Y, Abiri R, Zhao X. Tuning Up the Old Brain with New Tricks: Attention Training via Neurofeedback. Front Aging Neurosci 2017; 9:52. [PMID: 28348527 PMCID: PMC5346575 DOI: 10.3389/fnagi.2017.00052] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 02/22/2017] [Indexed: 12/03/2022] Open
Abstract
Neurofeedback (NF) is a form of biofeedback that uses real-time (RT) modulation of brain activity to enhance brain function and behavioral performance. Recent advances in Brain-Computer Interfaces (BCI) and cognitive training (CT) have provided new tools and evidence that NF improves cognitive functions, such as attention and working memory (WM), beyond what is provided by traditional CT. More published studies have demonstrated the efficacy of NF, particularly for treating attention deficit hyperactivity disorder (ADHD) in children. In contrast, there have been fewer studies done in older adults with or without cognitive impairment, with some notable exceptions. The focus of this review is to summarize current success in RT NF training of older brains aiming to match those of younger brains during attention/WM tasks. We also outline potential future advances in RT brainwave-based NF for improving attention training in older populations. The rapid growth in wireless recording of brain activity, machine learning classification and brain network analysis provides new tools for combating cognitive decline and brain aging in older adults. We optimistically conclude that NF, combined with new neuro-markers (event-related potentials and connectivity) and traditional features, promises to provide new hope for brain and CT in the growing older population.
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Affiliation(s)
- Yang Jiang
- Aging Brain and Cognition Laboratory, Department of Behavioral Science, College of Medicine, University of KentuckyLexington, KY, USA; Sanders-Brown Center on Aging, College of Medicine, University of KentuckyLexington, KY, USA
| | - Reza Abiri
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee Knoxville, TN, USA
| | - Xiaopeng Zhao
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of TennesseeKnoxville, TN, USA; Institute for Medical Engineering and Science, Massachusetts Institute of TechnologyCambridge, MA, USA
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Sun T, Li L, Xu Y, Zheng L, Zhang W, Zhou FA, Guo X. Electrophysiological evidence for women superiority on unfamiliar face processing. Neurosci Res 2017; 115:44-53. [DOI: 10.1016/j.neures.2016.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 10/08/2016] [Accepted: 10/21/2016] [Indexed: 10/20/2022]
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Li J, Broster LS, Jicha GA, Munro NB, Schmitt FA, Abner E, Kryscio R, Smith CD, Jiang Y. A cognitive electrophysiological signature differentiates amnestic mild cognitive impairment from normal aging. ALZHEIMERS RESEARCH & THERAPY 2017; 9:3. [PMID: 28100252 PMCID: PMC5244569 DOI: 10.1186/s13195-016-0229-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 12/08/2016] [Indexed: 12/19/2022]
Abstract
Background Noninvasive and effective biomarkers for early detection of amnestic mild cognitive impairment (aMCI) before measurable changes in behavioral performance remain scarce. Cognitive event-related potentials (ERPs) measure synchronized synaptic neural activity associated with a cognitive event. Loss of synapses is a hallmark of the neuropathology of early Alzheimer’s disease (AD). In the present study, we tested the hypothesis that ERP responses during working memory retrieval discriminate aMCI from cognitively normal controls (NC) matched in age and education. Methods Eighteen NC, 17 subjects with aMCI, and 13 subjects with AD performed a delayed match-to-sample task specially designed not only to be easy enough for impaired participants to complete but also to generate comparable performance between subjects with NC and those with aMCI. Scalp electroencephalography, memory accuracy, and reaction times were measured. Results Whereas memory performance separated the AD group from the others, the performance of NC and subjects with aMCI was similar. In contrast, left frontal cognitive ERP patterns differentiated subjects with aMCI from NC. Enhanced P3 responses at left frontal sites were associated with nonmatching relative to matching stimuli during working memory tasks in patients with aMCI and AD, but not in NC. The accuracy of discriminating aMCI from NC was 85% by using left frontal match/nonmatch effect combined with nonmatch reaction time. Conclusions The left frontal cognitive ERP indicator holds promise as a sensitive, simple, affordable, and noninvasive biomarker for detection of early cognitive impairment.
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Affiliation(s)
- Juan Li
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 100101, Beijing, China. .,Department of Behavioral Science, University of Kentucky College of Medicine, Lexington, KY, 40536, USA.
| | - Lucas S Broster
- Department of Behavioral Science, University of Kentucky College of Medicine, Lexington, KY, 40536, USA
| | - Gregory A Jicha
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, 40536, USA.,Department of Neurology, University of Kentucky College of Medicine, Lexington, KY, 40536, USA
| | | | - Frederick A Schmitt
- Department of Behavioral Science, University of Kentucky College of Medicine, Lexington, KY, 40536, USA.,Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, 40536, USA.,Department of Neurology, University of Kentucky College of Medicine, Lexington, KY, 40536, USA
| | - Erin Abner
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, 40536, USA.,Department of Epidemiology, University of Kentucky College of Public Health, Lexington, KY, 40536, USA
| | - Richard Kryscio
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, 40536, USA.,Department of Statistics, University of Kentucky, Lexington, KY, 40536, USA.,Department of Biostatistics, University of Kentucky College of Public Health, Lexington, KY, 40536, USA
| | - Charles D Smith
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, 40536, USA.,Department of Neurology, University of Kentucky College of Medicine, Lexington, KY, 40536, USA
| | - Yang Jiang
- Department of Behavioral Science, University of Kentucky College of Medicine, Lexington, KY, 40536, USA. .,Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, 40536, USA.
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Wang P, Li R, Yu J, Huang Z, Li J. Frequency-Dependent Brain Regional Homogeneity Alterations in Patients with Mild Cognitive Impairment during Working Memory State Relative to Resting State. Front Aging Neurosci 2016; 8:60. [PMID: 27047375 PMCID: PMC4805610 DOI: 10.3389/fnagi.2016.00060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 03/10/2016] [Indexed: 01/13/2023] Open
Abstract
Several studies have reported working memory deficits in patients with mild cognitive impairment (MCI). However, previous studies investigating the neural mechanisms of MCI have primarily focused on brain activity alterations during working memory tasks. No study to date has compared brain network alterations in the working memory state between MCI patients and normal control (NC) subjects. Therefore, using the index of regional homogeneity (ReHo), we explored brain network impairments in MCI patients during a working memory task relative to the resting state, and identified frequency-dependent effects in separate frequency bands.Our results indicate that, in MCI patients, ReHo is altered in the posterior cingulate cortex (PCC) in the slow-3 band (0.073–0.198 Hz), and in the bottom of the right occipital lobe and part of the right cerebellum, the right thalamus, a diffusing region in the bilateral prefrontal cortex (PFC), the left and right parietal-occipital regions, and the right angular gyrus in the slow-5 band (0.01–0.027 Hz). Furthermore, in NCs, the value of ReHo in clusters belonging to the default mode network (DMN) decreased, while the value of ReHo in clusters belonging to the attentional network increased during the task state. However, this pattern was reversed in MCI patients, and was associated with decreased working memory performance. In addition, we identified altered functional connectivity of the abovementioned regions with other parts of the brain in MCI patients. This is the first study to compare frequency-dependent alterations of ReHo in MCI patients between resting and working memory states. The results provide a new perspective regarding the neural mechanisms of working memory deficits in MCI patients, and extend our knowledge of altered brain patterns in resting and task-evoked states.
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Affiliation(s)
- Pengyun Wang
- Key Laboratory of Mental Health, Center on Aging Psychology, Institute of Psychology, Chinese Academy of Sciences Beijing, China
| | - Rui Li
- Key Laboratory of Mental Health, Center on Aging Psychology, Institute of Psychology, Chinese Academy of Sciences Beijing, China
| | - Jing Yu
- Faculty of Psychology, Southwest University Chongqing, China
| | - Zirui Huang
- Institute of Mental Health Research, University of Ottawa Ottawa, ON, Canada
| | - Juan Li
- Key Laboratory of Mental Health, Center on Aging Psychology, Institute of Psychology, Chinese Academy of Sciences Beijing, China
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14
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Galashan D, Fehr T, Herrmann M. Differences between target and non-target probe processing--combined evidence from fMRI, EEG and fMRI-constrained source analysis. Neuroimage 2015; 111:289-99. [PMID: 25731996 DOI: 10.1016/j.neuroimage.2015.02.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 02/03/2015] [Accepted: 02/20/2015] [Indexed: 11/17/2022] Open
Abstract
Previous studies reported heterogeneous findings in working memory tasks when examining differences between correct recognition (targets) and correct rejection (non-targets). In the present study, twenty human participants completed a delayed match-to-sample task in two separate functional magnetic resonance imaging (fMRI) and electroencephalography (EEG) sessions. Targets and non-target items were presented at different within-trial positions. We used fMRI-constrained source analysis to investigate the spatio-temporal neuronal dynamics of probe processing. Probe type-related differences were modulated by position in the trial or by the ratio of target stimuli to non-target stimuli at different trial positions. fMRI-constrained source analysis revealed a temporal pattern of source activities starting in occipital and temporal brain regions, followed by a simultaneous engagement of parietal and frontal brain regions and a later activity of a source in pre-SMA (supplementary motor area). Source activities demonstrated a specific involvement of left fusiform gyrus in the non-target condition compared to the target condition that might be associated with mental imagination of the target stimulus during non-target probe processing. Source activities, furthermore, showed the anterior cingulate to be particularly involved in target processing compared to non-target processing before response execution and the pre-SMA before and during response execution. These brain areas appear to be activated in different stages of conflict managing operations due to a lower stimulus frequency of target trials compared to non-target trials at different target positions in the present design.
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Affiliation(s)
- Daniela Galashan
- Department of Neuropsychology and Behavioral Neurobiology, Center for Cognitive Sciences (ZKW), University of Bremen, Bremen, Germany; Center for Advanced Imaging (CAI), University of Bremen, Bremen, Germany.
| | - Thorsten Fehr
- Department of Neuropsychology and Behavioral Neurobiology, Center for Cognitive Sciences (ZKW), University of Bremen, Bremen, Germany; Center for Advanced Imaging (CAI), University of Bremen, Bremen, Germany; Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany.
| | - Manfred Herrmann
- Department of Neuropsychology and Behavioral Neurobiology, Center for Cognitive Sciences (ZKW), University of Bremen, Bremen, Germany; Center for Advanced Imaging (CAI), University of Bremen, Bremen, Germany.
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15
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Broster LS, Li J, Smith CD, Jicha GA, Schmitt FA, Jiang Y. Repeated retrieval during working memory is sensitive to amnestic mild cognitive impairment. J Clin Exp Neuropsychol 2013; 35:946-59. [PMID: 24074205 DOI: 10.1080/13803395.2013.838942] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Study of repeated learning mechanisms has been limited in amnestic mild cognitive impairment, a preclinical stage of Alzheimer disease modifiable by cognitive rehabilitation. We assessed repeated contextual working memory decline as an indicator of amnestic mild cognitive impairment in a sample of 45 older adults recruited from the tertiary care setting. Results indicated that contextual working memory impairment distinguished adults with preclinical disease from those without impairment despite similar overall cognitive performance, and comparison of the indicator with standard-of-care neuropsychological measures indicated discriminant validity. Contextual working memory impairment may represent a novel predictor of Alzheimer disease conversion risk.
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Affiliation(s)
- Lucas S Broster
- a Department of Behavioral Science , University of Kentucky College of Medicine , Lexington , KY , USA
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16
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Zhang Q, Kong L, Jiang Y. The interaction of arousal and valence in affective priming: behavioral and electrophysiological evidence. Brain Res 2012; 1474:60-72. [PMID: 22820299 PMCID: PMC3694405 DOI: 10.1016/j.brainres.2012.07.023] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 07/11/2012] [Accepted: 07/12/2012] [Indexed: 11/27/2022]
Abstract
The affective priming paradigm has been studied extensively and applied in many fields during the past two decades. Most research thus far has focused on the valence dimension. Whether emotional arousal influences affective priming remains poorly understood. The present study demonstrates how arousal impacts evaluation of affective words using reaction time and event-related potential (ERP) measures. Eighteen younger subjects evaluated pleasantness of target words after seeing affective pictures as primes. The participants' responses were faster and/or more accurate for valence-congruent trials than for incongruent trials, particularly with high-arousal stimuli. An ERP affective priming effect (N400) also occurred mainly in high-arousing stimulus pairs. In addition, whereas valence congruency influenced both the N400 and the LPP, arousal congruency influenced only the LPP, suggesting that arousal congruency mainly modulates post-semantic processes, but valence congruency effects begin with semantic processes. Overall, our current findings indicate that the arousal level of visual images impacts both behavioral and ERP effects of affective priming.
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Affiliation(s)
- Qin Zhang
- Learning and Cognition Key Laboratory of Beijing, Department of Psychology, Capital Normal University, Beijing, 100048, China
| | - Lingyue Kong
- International College for Chinese Language Study, Peking University, Beijing, China
| | - Yang Jiang
- Behavioral Science Department, University of Kentucky College of Medicine, Lexington, Kentucky 40536-0086, USA
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17
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Jasinski EC, Coch D. ERPs across arithmetic operations in a delayed answer verification task. Psychophysiology 2012; 49:943-58. [DOI: 10.1111/j.1469-8986.2012.01378.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 02/26/2012] [Indexed: 11/30/2022]
Affiliation(s)
- Emily C. Jasinski
- Department of Education; Reading Brains Lab; Dartmouth College; Hanover; New Hampshire; USA
| | - Donna Coch
- Department of Education; Reading Brains Lab; Dartmouth College; Hanover; New Hampshire; USA
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18
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Liu Y, Keil A, Ding M. Effects of emotional conditioning on early visual processing: temporal dynamics revealed by ERP single-trial analysis. Hum Brain Mapp 2012; 33:909-19. [PMID: 21500315 PMCID: PMC6870142 DOI: 10.1002/hbm.21259] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Revised: 10/27/2010] [Accepted: 12/16/2010] [Indexed: 11/09/2022] Open
Abstract
Studies using event-related potentials (ERPs) have shown that affectively arousing stimuli enhance attention and perception. In addition, simple neutral stimuli, when paired with emotionally engaging unconditioned stimuli (i.e., the CS+) in classical conditioning paradigms, were found to evoke increased sensory responses as learning progresses, compared to responses elicited by the same stimuli not paired with a noxious stimulus (CS-). To date the detailed trial-to-trial temporal dynamics of this sensory facilitation process is not known. Signal averaging required for the ERP analysis eliminates trial-to-trial information of temporal cortical dynamics. In the current study, a novel single-trial analysis method called Analysis of Single-trial ERP and Ongoing activity (ASEO) was adopted to study the detailed electrocortical dynamics of sensory processing during classical aversive conditioning. Focusing on the P1 component of the ERP evoked by simple grating patterns serving as CS+ and CS-, we found that over a session of conditioning trials, there were three phases of P1 amplitude changes for both CS+ and CS-: (1) an initial decrease phase, (2) a subsequent increase phase, and (3) a final habituating phase. Tests on the rates of P1 amplitude changes in each of the three phases between CS+ and CS- conditions revealed differential effects of CS+ and CS- for all three phases. No such effects were found for a session of control trials where the same grating patterns were paired with checkerboards. We interpret these results as providing evidence supporting the view that emotional experience can modulate early visual processing and dynamics of perceptual learning.
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Affiliation(s)
- Yuelu Liu
- The J Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Andreas Keil
- The Department of Psychology and the NIMH Center for Emotion and Attention, University of Florida, Gainesville, Florida
| | - Mingzhou Ding
- The J Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida
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19
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Parasuraman R, Jiang Y. Individual differences in cognition, affect, and performance: behavioral, neuroimaging, and molecular genetic approaches. Neuroimage 2012; 59:70-82. [PMID: 21569853 PMCID: PMC3482491 DOI: 10.1016/j.neuroimage.2011.04.040] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2011] [Revised: 04/12/2011] [Accepted: 04/19/2011] [Indexed: 11/30/2022] Open
Abstract
We describe the use of behavioral, neuroimaging, and genetic methods to examine individual differences in cognition and affect, guided by three criteria: (1) relevance to human performance in work and everyday settings; (2) interactions between working memory, decision-making, and affective processing; and (3) examination of individual differences. The results of behavioral, functional MRI (fMRI), event-related potential (ERP), and molecular genetic studies show that analyses at the group level often mask important findings associated with sub-groups of individuals. Dopaminergic/noradrenergic genes influencing prefrontal cortex activity contribute to inter-individual variation in working memory and decision behavior, including performance in complex simulations of military decision-making. The interactive influences of individual differences in anxiety, sensation seeking, and boredom susceptibility on evaluative decision-making can be systematically described using ERP and fMRI methods. We conclude that a multi-modal neuroergonomic approach to examining brain function (using both neuroimaging and molecular genetics) can be usefully applied to understanding individual differences in cognition and affect and has implications for human performance at work.
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Affiliation(s)
- Raja Parasuraman
- Arch Laboratory and Department of Psychology, George Mason University, Fairfax, VA 22030, USA.
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20
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NI B, QIAN CC, WU RJ, ZHU HW, LIU ZX, LI YJ. Timing of Goal Match Enhancement in The Hippocampus Revealed by Human Intracranial Recording*. PROG BIOCHEM BIOPHYS 2011. [DOI: 10.3724/sp.j.1206.2010.00139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Music training and working memory: an ERP study. Neuropsychologia 2011; 49:1083-1094. [PMID: 21315092 DOI: 10.1016/j.neuropsychologia.2011.02.001] [Citation(s) in RCA: 145] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 12/22/2010] [Accepted: 02/01/2011] [Indexed: 11/22/2022]
Abstract
While previous research has suggested that music training is associated with improvements in various cognitive and linguistic skills, the mechanisms mediating or underlying these associations are mostly unknown. Here, we addressed the hypothesis that previous music training is related to improved working memory. Using event-related potentials (ERPs) and a standardized test of working memory, we investigated both neural and behavioral aspects of working memory in college-aged, non-professional musicians and non-musicians. Behaviorally, musicians outperformed non-musicians on standardized subtests of visual, phonological, and executive memory. ERPs were recorded in standard auditory and visual oddball paradigms (participants responded to infrequent deviant stimuli embedded in lists of standard stimuli). Electrophysiologically, musicians demonstrated faster updating of working memory (shorter latency P300s) in both the auditory and visual domains and musicians allocated more neural resources to auditory stimuli (larger amplitude P300), showing increased sensitivity to the auditory standard/deviant difference and less effortful updating of auditory working memory. These findings demonstrate that long-term music training is related to improvements in working memory, in both the auditory and visual domains and in terms of both behavioral and ERP measures.
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22
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Guo C, Lawson AL, Jiang Y. Distinct neural mechanisms for repetition effects of visual objects. Neuroscience 2007; 149:747-59. [PMID: 17949920 PMCID: PMC2203616 DOI: 10.1016/j.neuroscience.2007.07.060] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2007] [Revised: 07/17/2007] [Accepted: 07/20/2007] [Indexed: 11/16/2022]
Abstract
Repetition of visually common objects was examined in relation to prior intentional learning and memory status using a delayed match-to-sample task in humans. Both response time and two temporally separate event-related potential (ERP) components indexed repetition. The early repetition effect ( approximately 200-550 ms) evoked more ERP responses for repeated visual objects, and was diminished by prior intentional learning (old/new) or being maintained in working memory (targets/distracters). In contrast, the late repetition effect (after approximately 550 ms) evoked reduced ERP activation for repeated items, and was not affected by prior learning or working memory status. Our source localization results indicate that the late and posterior repetition effect in visual cortex is consistent with repetition suppression results reported in monkey physiology and human fMRI studies. Meanwhile, the early and anterior repetition effect, in temporal pole and frontal cortices, is modulated by explicit memory mechanisms.
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Affiliation(s)
- C Guo
- Department of Psychology, Capital Normal University, Beijing, China.
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