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Zimbrean P, Seniów J. Cognitive and psychiatric symptoms in Wilson disease. HANDBOOK OF CLINICAL NEUROLOGY 2017; 142:121-140. [DOI: 10.1016/b978-0-444-63625-6.00011-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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López Zunini RA, Knoefel F, Lord C, Dzuali F, Breau M, Sweet L, Goubran R, Taler V. Event-related potentials elicited during working memory are altered in mild cognitive impairment. Int J Psychophysiol 2016; 109:1-8. [DOI: 10.1016/j.ijpsycho.2016.09.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 09/14/2016] [Accepted: 09/21/2016] [Indexed: 11/15/2022]
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Papadaniil CD, Kosmidou VE, Tsolaki A, Tsolaki M, Kompatsiaris I(Y, Hadjileontiadis LJ. Cognitive MMN and P300 in mild cognitive impairment and Alzheimer's disease: A high density EEG-3D vector field tomography approach. Brain Res 2016; 1648:425-433. [DOI: 10.1016/j.brainres.2016.07.043] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 07/27/2016] [Accepted: 07/29/2016] [Indexed: 11/25/2022]
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López Zunini RA, Knoefel F, Lord C, Breau M, Sweet L, Goubran R, Taler V. P300 amplitude alterations during inhibitory control in persons with Mild Cognitive Impairment. Brain Res 2016; 1646:241-248. [DOI: 10.1016/j.brainres.2016.06.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 06/01/2016] [Accepted: 06/03/2016] [Indexed: 11/15/2022]
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Tsai CL, Pai MC, Ukropec J, Ukropcová B. The Role of Physical Fitness in the Neurocognitive Performance of Task Switching in Older Persons with Mild Cognitive Impairment. J Alzheimers Dis 2016; 53:143-59. [DOI: 10.3233/jad-151093] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Chia-Liang Tsai
- Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Taiwan, R.O.C
| | - Ming-Chyi Pai
- Department of Neurology, Division of Behavioral Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Taiwan, R.O.C
- Alzheimer’s Disease Research Center, National Cheng Kung University Hospital, Taiwan, R.O.C
| | - Jozef Ukropec
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Barbara Ukropcová
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
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Lister JJ, Harrison Bush AL, Andel R, Matthews C, Morgan D, Edwards JD. Cortical auditory evoked responses of older adults with and without probable mild cognitive impairment. Clin Neurophysiol 2016; 127:1279-1287. [DOI: 10.1016/j.clinph.2015.11.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 11/11/2015] [Accepted: 11/13/2015] [Indexed: 02/01/2023]
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Hedges D, Janis R, Mickelson S, Keith C, Bennett D, Brown BL. P300 Amplitude in Alzheimer's Disease: A Meta-Analysis and Meta-Regression. Clin EEG Neurosci 2016; 47:48-55. [PMID: 25253434 DOI: 10.1177/1550059414550567] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 08/12/2014] [Indexed: 11/16/2022]
Abstract
Alzheimer's disease accounts for 60% of all dementia. Numerous biomarkers have been developed that can help in making an early diagnosis. The P300 is an event-related potential that may be abnormal in Alzheimer's disease. Given the possible association between P300 amplitude and Alzheimer's disease and the need for biomarkers in early Alzheimer's disease, the main purpose of this meta-analysis and meta-regression was to characterize P300 amplitude in probable Alzheimer's disease compared to healthy controls. Using online search engines, we identified peer-reviewed articles containing amplitude measures for the P300 in response to a visual or auditory oddball stimulus in subjects with Alzheimer's disease and in a healthy control group and pooled effect sizes for differences in P300 amplitude between Alzheimer's disease and control groups to obtain summary effect sizes. We also used meta-regression to determine whether age, sex, educational attainment, or dementia severity affected the association between P300 amplitude and Alzheimer's disease. Twenty articles containing a total of 646 subjects met inclusion and exclusion criteria. The overall effect size from all electrode locations was 1.079 (95% confidence interval=0.745-1.412, P<.001). The pooled effect sizes for the Cz, Fz, and Pz locations were 1.226 (P<.001), 0.724 (P=.0007), and 1.430 (P<.001), respectively. Meta-regression showed an association between amplitude and educational attainment, but no association between amplitude and age, sex, and dementia severity. In conclusion, P300 amplitude is smaller in subjects with Alzheimer's disease than in healthy controls.
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Affiliation(s)
- Dawson Hedges
- Department of Psychology, Brigham Young University, Provo, UT, USA The Neuroscience Center, Brigham Young University, Provo, UT, USA
| | - Rebecca Janis
- Department of Psychology, Brigham Young University, Provo, UT, USA
| | | | - Cierra Keith
- The Neuroscience Center, Brigham Young University, Provo, UT, USA
| | - David Bennett
- The Neuroscience Center, Brigham Young University, Provo, UT, USA
| | - Bruce L Brown
- Department of Psychology, Brigham Young University, Provo, UT, USA
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Event-Related Potentials in Parkinson’s Disease Patients with Visual Hallucination. PARKINSON'S DISEASE 2016; 2016:1863508. [PMID: 28053801 PMCID: PMC5178355 DOI: 10.1155/2016/1863508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 11/09/2016] [Indexed: 11/29/2022]
Abstract
Using neuropsychological investigation and visual event-related potentials (ERPs), we aimed to compare the ERPs and cognitive function of nondemented Parkinson's disease (PD) patients with and without visual hallucinations (VHs) and of control subjects. We recruited 12 PD patients with VHs (PD-H), 23 PD patients without VHs (PD-NH), and 18 age-matched controls. All subjects underwent comprehensive neuropsychological assessment and visual ERPs measurement. A visual odd-ball paradigm with two different fixed interstimulus intervals (ISI) (1600 ms and 5000 ms) elicited visual ERPs. The frontal test battery was used to assess attention, visual-spatial function, verbal fluency, memory, higher executive function, and motor programming. The PD-H patients had significant cognitive dysfunction in several domains, compared to the PD-NH patients and controls. The mean P3 latency with ISI of 1600 ms in PD-H patients was significantly longer than that in controls. Logistic regression disclosed UPDRS-on score and P3 latency as significant predictors of VH. Our findings suggest that nondemented PD-H patients have worse cognitive function and P3 measurements. The development of VHs in nondemented PD patients might be implicated in executive dysfunction with altered visual information processing.
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Cecchi M, Moore DK, Sadowsky CH, Solomon PR, Doraiswamy PM, Smith CD, Jicha GA, Budson AE, Arnold SE, Fadem KC. A clinical trial to validate event-related potential markers of Alzheimer's disease in outpatient settings. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2015; 1:387-94. [PMID: 27239520 PMCID: PMC4879492 DOI: 10.1016/j.dadm.2015.08.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
INTRODUCTION We investigated whether event-related potentials (ERP) collected in outpatient settings and analyzed with standardized methods can provide a sensitive and reliable measure of the cognitive deficits associated with early Alzheimer's disease (AD). METHODS A total of 103 subjects with probable mild AD and 101 healthy controls were recruited at seven clinical study sites. Subjects were tested using an auditory oddball ERP paradigm. RESULTS Subjects with mild AD showed lower amplitude and increased latency for ERP features associated with attention, working memory, and executive function. These subjects also had decreased accuracy and longer reaction time in the target detection task associated with the ERP test. DISCUSSION Analysis of ERP data showed significant changes in subjects with mild AD that are consistent with the cognitive deficits found in this population. The use of an integrated hardware/software system for data acquisition and automated data analysis methods make administration of ERP tests practical in outpatient settings.
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Affiliation(s)
| | | | - Carl H. Sadowsky
- Department of Neurology, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Paul R. Solomon
- Department of Psychology, Williams College, Williamstown, MA, USA
| | - P. Murali Doraiswamy
- Departments of Psychiatry and Medicine, Duke Medicine and Duke Institute for Brain Sciences, Durham, NC, USA
| | - Charles D. Smith
- Department of Neurology, University of Kentucky, Lexington, KY, USA
| | - Gregory A. Jicha
- Department of Neurology, University of Kentucky, Lexington, KY, USA
| | - Andrew E. Budson
- Department of Cognitive & Behavioral Neurology, VA Boston Healthcare System, Boston, MA, USA
| | - Steven E. Arnold
- Departments of Psychiatry and Neurology, University of Pennsylvania, Philadelphia, PA, USA
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Chen L, Zhou Y, Liu L, Zhang X, Zhang H, Liu S. Cortical event-related potentials in Alzheimer's disease and frontotemporal lobar degeneration. J Neurol Sci 2015; 359:88-93. [DOI: 10.1016/j.jns.2015.10.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 10/06/2015] [Accepted: 10/20/2015] [Indexed: 11/27/2022]
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Weinberg A, Liu H, Shankman SA. Blunted neural response to errors as a trait marker of melancholic depression. Biol Psychol 2015; 113:100-7. [PMID: 26638761 DOI: 10.1016/j.biopsycho.2015.11.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 10/21/2015] [Accepted: 11/24/2015] [Indexed: 01/18/2023]
Abstract
Identification of biomarkers of vulnerability for Major Depressive Disorder is a high priority, but heterogeneity of the diagnosis can hinder research. Biomarkers of vulnerability should also be present in the absence of the diagnosis. The present study examined the magnitude of the error-related negativity (ERN), an event-related potential component following errors in a sample with remitted melancholic depression (N=17), remitted non-melancholic depression (N=33), and healthy controls (N=55). Remitted melancholic depression was uniquely characterized by a blunted ERN relative to the other two groups. Individuals with remitted non-melancholic depression did not differ from controls in the magnitude of the ERN. This was the case despite the fact that the melancholic and non-melancholic groups did not differ in course or severity of their past illnesses, or in their current functioning. Results suggest that the blunted ERN may be a viable vulnerability marker for melancholia.
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Affiliation(s)
| | - Huiting Liu
- University of Illinois at Chicago, United States
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63
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Dimitriadis SI, Laskaris NA, Bitzidou MP, Tarnanas I, Tsolaki MN. A novel biomarker of amnestic MCI based on dynamic cross-frequency coupling patterns during cognitive brain responses. Front Neurosci 2015; 9:350. [PMID: 26539070 PMCID: PMC4611062 DOI: 10.3389/fnins.2015.00350] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 09/14/2015] [Indexed: 11/13/2022] Open
Abstract
The detection of mild cognitive impairment (MCI), the transitional stage between normal cognitive changes of aging and the cognitive decline caused by AD, is of paramount clinical importance, since MCI patients are at increased risk of progressing into AD. Electroencephalographic (EEG) alterations in the spectral content of brainwaves and connectivity at resting state have been associated with early-stage AD. Recently, cognitive event-related potentials (ERPs) have entered into the picture as an easy to perform screening test. Motivated by the recent findings about the role of cross-frequency coupling (CFC) in cognition, we introduce a relevant methodological approach for detecting MCI based on cognitive responses from a standard auditory oddball paradigm. By using the single trial signals recorded at Pz sensor and comparing the responses to target and non-target stimuli, we first demonstrate that increased CFC is associated with the cognitive task. Then, considering the dynamic character of CFC, we identify instances during which the coupling between particular pairs of brainwave frequencies carries sufficient information for discriminating between normal subjects and patients with MCI. In this way, we form a multiparametric signature of impaired cognition. The new composite biomarker was tested using data from a cohort that consists of 25 amnestic MCI patients and 15 age-matched controls. Standard machine-learning algorithms were employed so as to implement the binary classification task. Based on leave-one-out cross-validation, the measured classification rate was found reaching very high levels (95%). Our approach compares favorably with the traditional alternative of using the morphology of averaged ERP response to make the diagnosis and the usage of features from spectro-temporal analysis of single-trial responses. This further indicates that task-related CFC measurements can provide invaluable analytics in AD diagnosis and prognosis.
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Affiliation(s)
- Stavros I Dimitriadis
- Artificial Intelligence Information Analysis Lab, Department of Informatics, Aristotle University of Thessaloniki Thessaloniki, Greece ; Neuroinformatics Group, Department of Informatics, Aristotle University of Thessaloniki Thessaloniki, Greece
| | - Nikolaos A Laskaris
- Artificial Intelligence Information Analysis Lab, Department of Informatics, Aristotle University of Thessaloniki Thessaloniki, Greece ; Neuroinformatics Group, Department of Informatics, Aristotle University of Thessaloniki Thessaloniki, Greece
| | - Malamati P Bitzidou
- Artificial Intelligence Information Analysis Lab, Department of Informatics, Aristotle University of Thessaloniki Thessaloniki, Greece
| | - Ioannis Tarnanas
- Health-IS Lab, Chair of Information Management, ETH Zurich Zurich, Switzerland ; 3rd Department of Neurology, Medical School, Aristotle University of Thessaloniki Thessaloniki, Greece
| | - Magda N Tsolaki
- 3rd Department of Neurology, Medical School, Aristotle University of Thessaloniki Thessaloniki, Greece
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Vaitkevičius A, Kaubrys G, Audronytė E. Distinctive Effect of Donepezil Treatment on P300 and N200 Subcomponents of Auditory Event-Related Evoked Potentials in Alzheimer Disease Patients. Med Sci Monit 2015; 21:1920-7. [PMID: 26138001 PMCID: PMC4501636 DOI: 10.12659/msm.894940] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Background Latency of P300 subcomponent of event-related potentials (ERPs) increases in Alzheimer disease (AD) patients, which correlate well with cognitive impairment. Cholinesterase inhibitors (ChEIs) reduce P300 latency in AD patients with parallel improvement in cognition. It is not known whether N200 response to ChEIs is similar to that of P300. The aim of this study was to evaluate and compare characteristics of P300 and N200 in AD patients, treatment-naïve and on stable donepezil treatment, matched by age, education, sex, and cognitive function. Material/Methods We recruited 22 consecutive treatment-naïve AD patients (AD-N group), 22 AD patients treated with a stable donepezil dose of 10 mg/day for at least 3 months (AD-T group), and 50 healthy controls were recruited. Neuropsychological testing (MMSE, ADAS-Cog, and additional tests) and ERP recording was performed and analyzed. Results All groups did not differ according to age, duration of education, or sex (p>0.05). AD-N and AD-T groups did not differ according to cognitive function. The AD-T group had longer duration of disease than the AD-N group (p<0.001). The AD-T and AD-N groups did not differ in P300 latencies (p=0.49). N200 latency was longer in the AD-T group (p<0.001). The general linear model showed that significant predictors of P300 latency were age (p=0.019) and AD treatment status (p<0.001). Duration of AD was a significant predictor of N200 latency (p=0.004). Conclusions The response of N200 latency to donepezil treatment differs from the response of P300. P300 is a better marker of ChEI treatment-dependent cognitive functions. N200 is more dependent on the duration of AD.
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Affiliation(s)
- Arūnas Vaitkevičius
- Clinic of Neurology and Neurosurgery, Faculty of Medicine, Vilnius University, Center of Neurology, Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania
| | - Gintaras Kaubrys
- Clinic of Neurology and Neurosurgery, Faculty of Medicine, Vilnius University, Center of Neurology, Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania
| | - Eglė Audronytė
- Clinic of Neurology and Neurosurgery, Faculty of Medicine, Vilnius University, Center of Neurology, Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania
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Carreiro AV, Mendonça A, de Carvalho M, Madeira SC. Integrative biomarker discovery in neurodegenerative diseases. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2015; 7:357-79. [PMID: 26136395 DOI: 10.1002/wsbm.1310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 05/22/2015] [Accepted: 05/27/2015] [Indexed: 12/12/2022]
Abstract
Data mining has been widely applied in biomarker discovery resulting in significant findings of different clinical and biological biomarkers. With developments in technology, from genomics to proteomics analysis, a deluge of data has become available, as well as standardized data repositories. Nonetheless, researchers are still facing important challenges in analyzing the data, especially when considering the complexity of pathways involved in biological processes and diseases. Data from single sources appear unable to explain complex processes, such as those involved in brain-related disorders, including Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis, thus raising the need for a more comprehensive perspective. A possible solution relies on data and model integration, where several data types are combined to provide complementary views. This in turn can result in the discovery of previously unknown biomarkers by unraveling otherwise hidden relationships between data from different sources, and/or validate such composite biomarkers in more powerful predictive models.
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Affiliation(s)
- André V Carreiro
- INESC-ID Lisbon and Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Alexandre Mendonça
- Dementia Clinics, Institute of Molecular Medicine and Faculty of Medicine, Universidade de Lisboa, Lisboa, Portugal
| | - Mamede de Carvalho
- Translational Clinical Physiology Unit, Institute of Molecular Medicine and Faculty of Medicine, Universidade de Lisboa, Lisboa, Portugal
| | - Sara C Madeira
- INESC-ID Lisbon and Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
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Liou LM, Yang YH, Lu SR, Hsu CY, Liu CK, Lai CL. Potential cognitive decline linked to angiotensin-converting enzyme gene but not hypertension: Evidence from cognitive event-related potentials. Clin Neurophysiol 2015; 126:2269-75. [PMID: 25743267 DOI: 10.1016/j.clinph.2015.01.024] [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: 08/23/2014] [Revised: 01/14/2015] [Accepted: 01/27/2015] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The aims of the present study were to investigate the effect of hypertension and angiotensin-converting enzyme (ACE) genotypes on cognitive event-related potentials (ERPs), and whether the impact of ACE genotypes on P300 is related to the influence of hypertension. METHODS Using the Cognitive Abilities Screening Instrument (CASI), we recruited 97 mentally healthy middle-aged and older adults. Medical histories were collected, and blood pressure, ACE insertion/deletion polymorphisms and ERPs in an auditory oddball task were measured for all participants. RESULTS When the participants were stratified according to the presence or absence of hypertension, there were no differences in CASI score, percentage of ACE genotypes and ERPs. The subjects with the D/D homozygote displayed lower amplitude and longer latency of P300, although there were no differences in CASI score and the percentage of hypertension. CONCLUSIONS The subjects with the D/D genotype tended to have decreased amplitude and prolonged latency of P300 ERPs which reflected subtle cognitive impairment. There were no associations between hypertension, CASI score and P300 measurements. SIGNIFICANCE Using ERPs, potential cognitive decline was linked to ACE genotypes, independently of the effect of hypertension.
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Affiliation(s)
- Li-Min Liou
- Department of Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan; Department of Neurology, Kaohsiung Medical University Hospital, Taiwan
| | - Yuan-Han Yang
- Department of Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan; Department of Neurology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Taiwan
| | - Shiang-Ru Lu
- Department of Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan; Department of Neurology, Kaohsiung Medical University Hospital, Taiwan
| | - Chung-Yao Hsu
- Department of Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan; Department of Neurology, Kaohsiung Medical University Hospital, Taiwan
| | - Ching-Kuan Liu
- Department of Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan; Department of Neurology, Kaohsiung Medical University Hospital, Taiwan
| | - Chiou-Lian Lai
- Department of Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan; Department of Neurology, Kaohsiung Medical University Hospital, Taiwan.
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Jiang S, Qu C, Wang F, Liu Y, Qiao Z, Qiu X, Yang X, Yang Y. Using event-related potential P300 as an electrophysiological marker for differential diagnosis and to predict the progression of mild cognitive impairment: a meta-analysis. Neurol Sci 2015; 36:1105-12. [PMID: 25663086 DOI: 10.1007/s10072-015-2099-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 01/22/2015] [Indexed: 11/24/2022]
Abstract
P300 event-related potential component may sensitively predict mild cognitive impairment (MCI) progression. Here, pooled effect size estimates of P300 amplitude and latency were computed at midline electrodes among controls, MCI patients, and Alzheimer's disease (AD) patients. Baseline data were compared to one-year follow-up data. MCI patients showed decreased P300 amplitude and prolonged latency compared to controls. Pooled standardized mean differences (SMDs) were -0.67 (95 % CI -1.12 to -0.23, P = 0.003) and 0.90 (95 % CI 0.66-1.14, P < 0.00001), respectively. P300 latency decreased in MCI compared to AD patients where the pooled SMD was -0.52 (95 % CI -0.85 to -0.18, P = 0.003). Amplitude and latency differed between MCI baseline and follow-up. Pooled SMDs were 0.47 (95 % CI 0.29 to -0.65, P < 0.00001) and -0.52 (95 % CI -0.71 to -0.34, P < 0.00001), respectively. Group differences in MCI P300 latency existed compared to control and AD patients. P300 latency may therefore be a sensitive indicator for early cognitive decline or disease progression in MCI patients and identifying elderly patient progression to MCI and/or AD.
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Affiliation(s)
- Shixiang Jiang
- Department of Medical Psychology, School of Public Health, Harbin Medical University, 157 Baojian Road, Harbin, 150081, Heilongjiang, China
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Chen CC, Syue KS, Li KC, Yeh SC. Neuronal correlates of a virtual-reality-based passive sensory P300 network. PLoS One 2014; 9:e112228. [PMID: 25401520 PMCID: PMC4234463 DOI: 10.1371/journal.pone.0112228] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 10/10/2014] [Indexed: 11/18/2022] Open
Abstract
P300, a positive event-related potential (ERP) evoked at around 300 ms after stimulus, can be elicited using an active or passive oddball paradigm. Active P300 requires a person’s intentional response, whereas passive P300 does not require an intentional response. Passive P300 has been used in incommunicative patients for consciousness detection and brain computer interface. Active and passive P300 differ in amplitude, but not in latency or scalp distribution. However, no study has addressed the mechanism underlying the production of passive P300. In particular, it remains unclear whether the passive P300 shares an identical active P300 generating network architecture when no response is required. This study aims to explore the hierarchical network of passive sensory P300 production using dynamic causal modelling (DCM) for ERP and a novel virtual reality (VR)-based passive oddball paradigm. Moreover, we investigated the causal relationship of this passive P300 network and the changes in connection strength to address the possible functional roles. A classical ERP analysis was performed to verify that the proposed VR-based game can reliably elicit passive P300. The DCM results suggested that the passive and active P300 share the same parietal-frontal neural network for attentional control and, underlying the passive network, the feed-forward modulation is stronger than the feed-back one. The functional role of this forward modulation may indicate the delivery of sensory information, automatic detection of differences, and stimulus-driven attentional processes involved in performing this passive task. To our best knowledge, this is the first study to address the passive P300 network. The results of this study may provide a reference for future clinical studies on addressing the network alternations under pathological states of incommunicative patients. However, caution is required when comparing patients’ analytic results with this study. For example, the task presented here is not applicable to incommunicative patients.
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Affiliation(s)
- Chun-Chuan Chen
- Graduate Institute of Biomedical Engineering, National Central University, Jhongli city, Taoyuan County, Taiwan
| | - Kai-Syun Syue
- Graduate Institute of Biomedical Engineering, National Central University, Jhongli city, Taoyuan County, Taiwan
| | - Kai-Chiun Li
- Graduate Institute of Biomedical Engineering, National Central University, Jhongli city, Taoyuan County, Taiwan
| | - Shih-Ching Yeh
- Department of Computer Science and Information Engineering, National Central University, Jhongli city, Taoyuan County, Taiwan
- * E-mail:
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Meta-analysis of the endogenous N200 latency event-related potential subcomponent in patients with Alzheimer’s disease and mild cognitive impairment. Clin Neurophysiol 2014; 125:1145-51. [DOI: 10.1016/j.clinph.2013.10.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 10/15/2013] [Accepted: 10/19/2013] [Indexed: 11/20/2022]
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70
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Hedges D, Bennett DP. Cigarette smoking and p300 amplitude in adults: a systematic review. Nicotine Tob Res 2014; 16:1157-66. [PMID: 24847100 DOI: 10.1093/ntr/ntu083] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To determine the association between chronic tobacco cigarette smoking and P300 amplitude. DESIGN Systematic review with meta-analysis and meta-regression. DATA SOURCES Medline, Cochrane Database of Systematic Reviews, PsychInfo, and Web of Science. ELIGIBILITY CRITERIA FOR SELECTING STUDIES Eligible studies contained P300 amplitudes obtained from either visual or auditory stimuli and standard deviations or errors in female and male subjects older than 18 years in a group of nonabstaining chronic cigarette smokers and a nonsmoking control group. RESULTS The 9 eligible studies comprised 13 relevant datasets containing 1,956 current cigarette smokers and 2,194 nonsmoking controls (N = 4,150). The P300 amplitude was smaller in cigarette smokers than in nonsmoking controls (Hedges' g effect size = .365; 95% confidence interval [CI] = 0.196-0.534, p < .001). Meta-regression showed significant positive associations between the number of cigarettes smoked per day at the time of the study (slope estimate = .036, 95% CI = 0.016-0.056, p ≤ .001, length of smoking in years (slope estimate = .056, 95% CI = 0.005-0.102, p = .018), pack years (slope estimate = .018, 95% CI = 0.009-0.031 p = .009), and age (slope estimate = .068, 95% CI = 0.025-0.113, p = .002). CONCLUSIONS P300 amplitude was smaller in cigarette smokers than in nonsmoking controls, and a possible dose-response relationship was apparent. Findings indicate a possible association between cigarette smoking and decreased P300 amplitude.
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Affiliation(s)
- Dawson Hedges
- Department of Psychology, Brigham Young University, Provo, UT; Neuroscience Center, Brigham Young University, Provo, UT
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71
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Howe AS, Bani-Fatemi A, De Luca V. The clinical utility of the auditory P300 latency subcomponent event-related potential in preclinical diagnosis of patients with mild cognitive impairment and Alzheimer's disease. Brain Cogn 2014; 86:64-74. [PMID: 24565814 DOI: 10.1016/j.bandc.2014.01.015] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 01/26/2014] [Accepted: 01/27/2014] [Indexed: 11/29/2022]
Abstract
The present meta-analysis investigated the clinical utility of the auditory P300 latency event-related potential in differentiating patients with Alzheimer's disease (AD), patients with mild cognitive impairment (MCI), and unaffected controls. Effect size estimates were computed from mean P300 latency measurements at midline electrodes between patients and unaffected controls using the random effects restricted maximum likelihood model. The effects of clinical and ERP/EEG methological variables were assessed in a moderator analysis. P300 latency was found to be significantly prolonged in patients with AD (and MCI) compared to unaffected controls. Shortened P300 latencies were observed when comparing patients with MCI to patients with AD. Clinically relevant differences in P300 latency effect sizes were associated with mean age, interstimulus interval, stimulus difference, target frequency, reference electrode, and sampling rate. The meta-analytic findings provide robust statistical evidence for the use of the auditory P300 latency subcomponent as a biological marker of prodromal AD.
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Affiliation(s)
- Aaron S Howe
- PharmacoEEG Study Group, Centre for Addiction and Mental Health, Toronto M5T 1R8, Canada.
| | - Ali Bani-Fatemi
- PharmacoEEG Study Group, Centre for Addiction and Mental Health, Toronto M5T 1R8, Canada
| | - Vincenzo De Luca
- PharmacoEEG Study Group, Centre for Addiction and Mental Health, Toronto M5T 1R8, Canada
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Lindín M, Correa K, Zurrón M, Díaz F. Mismatch negativity (MMN) amplitude as a biomarker of sensory memory deficit in amnestic mild cognitive impairment. Front Aging Neurosci 2013; 5:79. [PMID: 24312051 PMCID: PMC3834246 DOI: 10.3389/fnagi.2013.00079] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 11/04/2013] [Indexed: 12/16/2022] Open
Abstract
It has been suggested that changes in some event-related potential (ERP) parameters associated with controlled processing of stimuli could be used as biomarkers of amnestic mild cognitive impairment (aMCI). However, data regarding the suitability of ERP components associated with automatic and involuntary processing of stimuli for this purpose are not conclusive. In the present study, we studied the Mismatch Negativity (MMN) component, a correlate of the automatic detection of changes in the acoustic environment, in healthy adults and adults with aMCI (age range: 50-87 years). An auditory-visual attention-distraction task, in two evaluations separated by an interval of between 18 and 24 months, was used. In both evaluations, the MMN amplitude was significantly smaller in the aMCI adults than in the control adults. In the first evaluation, such differences were observed for the subgroup of adults between 50 and 64 years of age, but not for the subgroup of 65 years and over. In the aMCI adults, the MMN amplitude was significantly smaller in the second evaluation than in the first evaluation, but no significant changes were observed in the control adult group. The MMN amplitude was found to be a sensitive and specific biomarker of aMCI, in both the first and second evaluation.
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Affiliation(s)
- Mónica Lindín
- Laboratorio de Psicofisioloxía e Neurociencia Cognitiva, Facultade de Psicoloxía, Universidade de Santiago de Compostela Santiago de Compostela, Spain
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73
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Newsome RN, Pun C, Smith VM, Ferber S, Barense MD. Neural correlates of cognitive decline in older adults at-risk for developing MCI: Evidence from the CDA and P300. Cogn Neurosci 2013; 4:152-62. [DOI: 10.1080/17588928.2013.853658] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Carson Pun
- Department of Psychology, University of Toronto, Toronto, Canada
| | | | - Susanne Ferber
- Department of Psychology, University of Toronto, Toronto, Canada
- Rotman Research Institute, Toronto, Canada
| | - Morgan D. Barense
- Department of Psychology, University of Toronto, Toronto, Canada
- Rotman Research Institute, Toronto, Canada
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Bender S, Bluschke A, Dippel G, Rupp A, Weisbrod M, Thomas C. Auditory post-processing in a passive listening task is deficient in Alzheimer's disease. Clin Neurophysiol 2013; 125:53-62. [PMID: 23867063 DOI: 10.1016/j.clinph.2013.05.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 05/29/2013] [Accepted: 05/31/2013] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To investigate whether automatic auditory post-processing is deficient in patients with Alzheimer's disease and is related to sensory gating. METHODS Event-related potentials were recorded during a passive listening task to examine the automatic transient storage of auditory information (short click pairs). Patients with Alzheimer's disease were compared to a healthy age-matched control group. A young healthy control group was included to assess effects of physiological aging. RESULTS A bilateral frontal negativity in combination with deep temporal positivity occurring 500 ms after stimulus offset was reduced in patients with Alzheimer's disease, but was unaffected by physiological aging. Its amplitude correlated with short-term memory capacity, but was independent of sensory gating in healthy elderly controls. Source analysis revealed a dipole pair in the anterior temporal lobes. CONCLUSION Results suggest that auditory post-processing is deficient in Alzheimer's disease, but is not typically related to sensory gating. The deficit could neither be explained by physiological aging nor by problems in earlier stages of auditory perception. Correlations with short-term memory capacity and executive control tasks suggested an association with memory encoding and/or overall cognitive control deficits. SIGNIFICANCE An auditory late negative wave could represent a marker of auditory working memory encoding deficits in Alzheimer's disease.
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Affiliation(s)
- Stephan Bender
- Section for Clinical Neurophysiology and Multimodal Neuroimaging, Department of Child and Adolescent Psychiatry, Technical University Dresden, Fetscherstraße 74, D-01307 Dresden, Germany; Section for Experimental Psychopathology, Psychiatric Hospital, University of Heidelberg, Voßstraße 4, D-69115 Heidelberg, Germany; Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe University Frankfurt/Main, Deutschordenstraße 50, D-60528 Frankfurt/Main, Germany.
| | - Annet Bluschke
- Section for Clinical Neurophysiology and Multimodal Neuroimaging, Department of Child and Adolescent Psychiatry, Technical University Dresden, Fetscherstraße 74, D-01307 Dresden, Germany
| | - Gabriel Dippel
- Section for Clinical Neurophysiology and Multimodal Neuroimaging, Department of Child and Adolescent Psychiatry, Technical University Dresden, Fetscherstraße 74, D-01307 Dresden, Germany
| | - André Rupp
- Section for Biomagnetism, Department of Neurology, University of Heidelberg, Im Neuenheimer Feld 120, D-69120 Heidelberg, Germany
| | - Matthias Weisbrod
- Section for Experimental Psychopathology, Psychiatric Hospital, University of Heidelberg, Voßstraße 4, D-69115 Heidelberg, Germany; Psychiatric Hospital (SRH), Guttmannstrasse 1, D-76307 Karlsbad-Langensteinbach, Germany
| | - Christine Thomas
- Section for Experimental Psychopathology, Psychiatric Hospital, University of Heidelberg, Voßstraße 4, D-69115 Heidelberg, Germany; Evangelical Hospital Bielefeld, Department of Psychiatry and Psychotherapy Bethel, Department of Geriatric Psychiatry, Bethesdaweg 12, D-33617 Bielefeld, Germany
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75
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BDNF-based synaptic repair as a disease-modifying strategy for neurodegenerative diseases. Nat Rev Neurosci 2013; 14:401-16. [PMID: 23674053 DOI: 10.1038/nrn3505] [Citation(s) in RCA: 526] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Increasing evidence suggests that synaptic dysfunction is a key pathophysiological hallmark in neurodegenerative disorders, including Alzheimer's disease. Understanding the role of brain-derived neurotrophic factor (BDNF) in synaptic plasticity and synaptogenesis, the impact of the BDNF Val66Met polymorphism in Alzheimer's disease-relevant endophenotypes - including episodic memory and hippocampal volume - and the technological progress in measuring synaptic changes in humans all pave the way for a 'synaptic repair' therapy for neurodegenerative diseases that targets pathophysiology rather than pathogenesis. This article reviews the key issues in translating BDNF biology into synaptic repair therapies.
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76
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Braverman ER, Blum K, Damle UJ, Kerner M, Dushaj K, Oscar-Berman M. Evoked potentials and neuropsychological tests validate Positron Emission Topography (PET) brain metabolism in cognitively impaired patients. PLoS One 2013; 8:e55398. [PMID: 23526928 PMCID: PMC3604004 DOI: 10.1371/journal.pone.0055398] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 12/27/2012] [Indexed: 01/15/2023] Open
Abstract
Fluorodeoxyglucose (FDG) Positron Emission Topography (PET) brain hypometabolism (HM) correlates with diminished cognitive capacity and risk of developing dementia. However, because clinical utility of PET is limited by cost, we sought to determine whether a less costly electrophysiological measure, the P300 evoked potential, in combination with neuropsychological test performance, would validate PET HM in neuropsychiatric patients. We found that patients with amnestic and non-amnestic cognitive impairment and HM (n = 43) evidenced significantly reduced P300 amplitudes, delayed latencies, and neuropsychological deficits, compared to patients with normal brain metabolism (NM; n = 187). Data from patients with missing cognitive test scores (n = 57) were removed from the final sample, and logistic regression modeling was performed on the modified sample (n = 173, p = .000004). The logistic regression modeling, based on P300 and neuropsychological measures, was used to validate membership in the HM vs. NM groups. It showed classification validation in 13/25 HM subjects (52.0%) and in 125/148 NM subjects (84.5%), correlating with total classification accuracy of 79.8%. In this paper, abnormal P300 evoked potentials coupled with cognitive test impairment validates brain metabolism and mild/moderate cognitive impairment (MCI). To this end, we cautiously propose incorporating electrophysiological and neuropsychological assessments as cost-effective brain metabolism and MCI indicators in primary care. Final interpretation of these results must await required additional studies confirming these interesting results.
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Affiliation(s)
- Eric R Braverman
- Department of Clinical Neurology, PATH Foundation NY, New York, New York, United States of America.
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77
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Lee MS, Lee SH, Moon EO, Moon YJ, Kim S, Kim SH, Jung IK. Neuropsychological correlates of the P300 in patients with Alzheimer's disease. Prog Neuropsychopharmacol Biol Psychiatry 2013; 40:62-9. [PMID: 22940475 DOI: 10.1016/j.pnpbp.2012.08.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 08/04/2012] [Accepted: 08/17/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVES The P300 is a useful psychophysiological index that reflects cognitive functions; however, the relationship between P300 indices and neuropsychological tests in Alzheimer's disease (AD) patients is unclear. METHODS Thirty-one AD patients and 31 elderly normal control (NC) subjects were recruited. Age and education level were matched between the two groups. The relationship between the P300 and the Korean version of the Consortium to Establish a Registry for Alzheimer's disease (CERAD-K) assessment packet (including 11 neuropsychological tests) was examined in AD patients. RESULTS Compared to the NC subjects, the AD patients exhibited significantly decreased P300 amplitudes; however, there was no significant difference between the two groups in terms of P300 latency. After a permutation-based correction for multiple tests, P300 amplitudes at the Cz and Pz electrodes were significantly correlated with performance on the word list recognition, constructional praxis, and word fluency neuropsychological tests in the AD patients. Additionally, P300 latencies at the Pz and C6 electrodes were also significantly correlated with performance on the Mini-Mental State Examination, CERAD-K version (MMSE-K), and Trail Making Test part A (TMT-A) neuropsychological tests in the AD patients. CONCLUSIONS The results suggest that the P300 is responsive to the deterioration of language, memory, and executive functions observed in AD patients. Although there was no significant difference between the AD patients and NC subjects in the P300 latency, P300 latency has been shown to reflect impaired global cognition and attention deficits associated with AD. Our results suggest that P300 indices could be used as biological markers that indicate impaired neuropsychological functions in AD patients.
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Affiliation(s)
- Moon-Soo Lee
- Department of Psychiatry, Korea University, College of Medicine, Seoul, Republic of Korea
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Chapman RM, Porsteinsson AP, Gardner MN, Mapstone M, McCrary JW, Sandoval TC, Guillily MD, DeGrush E, Reilly LA. C145 as a short-latency electrophysiological index of cognitive compensation in Alzheimer's disease. J Alzheimers Dis 2013; 33:55-68. [PMID: 22886016 PMCID: PMC3576817 DOI: 10.3233/jad-2012-120646] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Brain plasticity and cognitive compensation in the elderly are of increasing interest, and Alzheimer's disease (AD) offers an opportunity to elucidate how the brain may overcome damage. We provide neurophysiological evidence of a short-latency event-related potential (ERP) component (C145) linked to stimulus relevancy that may reflect cognitive compensation in early-stage AD. Thirty-six subjects with early-stage, mild AD and 36 like-aged normal elderly (controls) had their EEG recorded while performing our Number-Letter task, a cognitive/perceptual paradigm that manipulates stimulus relevancies. ERP components, including C145, were extracted from ERPs using principal components analysis. C145 amplitudes and spatial distributions were compared among controls, AD subjects with high performance on the Number-Letter task, and AD subjects with low performance. Compared to AD subjects, control subjects showed enhanced C145 processing of visual stimuli in the occipital region where differential processing of relevant stimuli occurred. AD high performers recruited central brain areas in processing task relevancy. Controls and AD low performers did not show a significant task relevancy effect in these areas. We conclude that short-latency ERP components can detect electrophysiological differences in early-stage AD that reflect altered cognition. Differences in C145 amplitudes between AD and normal elderly groups regarding brain locations and types of task effects suggest compensatory mechanisms can occur in the AD brain to overcome loss of normal functionality, and this early compensation may have a profound effect on the cognitive efficiency of AD individuals.
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Affiliation(s)
- Robert M Chapman
- Department of Brain and Cognitive Sciences and Center for Visual Science at the University of Rochester, Rochester, NY 14627, USA.
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Biomarkers in Alzheimer's disease with a special emphasis on event-related oscillatory responses. APPLICATION OF BRAIN OSCILLATIONS IN NEUROPSYCHIATRIC DISEASES - SELECTED PAPERS FROM “BRAIN OSCILLATIONS IN COGNITIVE IMPAIRMENT AND NEUROTRANSMITTERS” CONFERENCE, ISTANBUL, TURKEY, 29 APRIL–1 MAY 2011 2013; 62:237-73. [DOI: 10.1016/b978-0-7020-5307-8.00020-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Improved detection of amnestic MCI by means of discriminative vector quantization of single-trial cognitive ERP responses. J Neurosci Methods 2013; 212:344-54. [DOI: 10.1016/j.jneumeth.2012.10.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 10/17/2012] [Accepted: 10/28/2012] [Indexed: 11/20/2022]
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Parra MA, Ascencio LL, Urquina HF, Manes F, Ibáñez AM. P300 and neuropsychological assessment in mild cognitive impairment and Alzheimer dementia. Front Neurol 2012; 3:172. [PMID: 23227021 PMCID: PMC3514532 DOI: 10.3389/fneur.2012.00172] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 11/13/2012] [Indexed: 11/25/2022] Open
Abstract
Only a small proportion of individuals with Mild Cognitive Impairment (MCI) will convert to dementia. Methods currently available to identify risk for conversion do not combine enough sensitivity and specificity, which is even more problematic in low-educated populations. Current guidelines suggest the use of combined markers for dementia to enhance the prediction accuracy of assessment methods. The present study adhered to this proposal and investigated the sensitivity and specificity of the electrophysiological component P300 and standard neuropsychological tests to assess patients with Alzheimer's disease (AD) and MCI recruited from a low-income country. The neuropsychological battery comprised tests of memory, attention, language, praxis, and executive functions. The P300 was recorded using a classical visual odd-ball paradigm. Three variables were found to achieve sensitivity and specificity values above 80% (Immediate and Delayed recall of word list - CERAD - and the latency of P300) for both MCI and AD. When they entered the model together (i.e., combined approach) the sensitivity for MCI increased to 96% and the specificity remained high (80%). Our preliminary findings suggest that the combined use of sensitive neuropsychological tasks and the analysis of the P300 may offer a very useful method for the preclinical assessment of AD, particularly in populations with low socioeconomic and educational levels. Our results provide a platform and justification to employ more resources to convert P300 and related parameters into a biological marker for AD.
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Affiliation(s)
- Mario A. Parra
- Scottish Dementia Clinical Research NetworkPerth, Scotland, UK
- Human Cognitive Neuroscience, Psychology Department, University of EdinburghEdinburgh, UK
- Neuropsy and Biomedical Unit, Health Faculty, Surcolombiana UniversityNeiva, Colombia
| | | | - Hugo Fenando Urquina
- Neuropsy and Biomedical Unit, Health Faculty, Surcolombiana UniversityNeiva, Colombia
- Laboratory of Experimental Psychology and Neurosciences, Institute of Cognitive Neurology and Institute of Neuroscience, Favaloro UniversityBuenos Aires, Argentina
| | - Facundo Manes
- Laboratory of Experimental Psychology and Neurosciences, Institute of Cognitive Neurology and Institute of Neuroscience, Favaloro UniversityBuenos Aires, Argentina
| | - Agustín M. Ibáñez
- Laboratory of Experimental Psychology and Neurosciences, Institute of Cognitive Neurology and Institute of Neuroscience, Favaloro UniversityBuenos Aires, Argentina
- Laboratory of Cognitive and Social Neuroscience, Universidad Diego PortalesSantiago, Chile
- National Scientific and Technical Research CouncilBuenos Aires, Argentina
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Liu CJ, Huang CF, Chou CY, Kuo WJ, Lin YT, Hung CM, Chen TC, Ho MC. Age- and disease-related features of task-related brain oscillations by using mutual information. Brain Behav 2012; 2:754-62. [PMID: 23170238 PMCID: PMC3500462 DOI: 10.1002/brb3.93] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 08/15/2012] [Accepted: 08/27/2012] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to investigate changes in task-related brain oscillations and corticocortical connections in patients with mild cognitive impairment (MCI) and those with normal aging using cross-mutual information (CMI) analysis. We hypothesized that task-related brain oscillations and corticocortical connections were affected by age- and disease-related changes, which could be reflected in the CMI analysis. Electroencephalogram (EEG) recordings were measured in 16 MCI patients, 15 healthy age-matched controls, and 16 healthy younger individuals. The frequencies and interhemispheric CMI data were estimated in all groups. The specific EEG rhythms measured were delta (δ), theta (θ), alpha (α), beta (β), and gamma (γ) bands. Significant differences in δ, θ, α, and β bands were observed between the younger and elderly groups. However, only the θ band was significantly different between the elderly and MCI groups. Moreover, this study used EEG recordings to investigate age- and disease-related changes in the corticocortical connections of the brain. This study proves that the θ-band frequency of the connection between the parietal and occipital lobes for the age- and disease-related changes can be depicted using the CMI analysis.
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Affiliation(s)
- Chia-Ju Liu
- Graduate Institute of Science Education, National Kaohsiung Normal University Kaohsiung, Taiwan
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83
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Olichney JM, Yang JC, Taylor J, Kutas M. Cognitive event-related potentials: biomarkers of synaptic dysfunction across the stages of Alzheimer's disease. J Alzheimers Dis 2012; 26 Suppl 3:215-28. [PMID: 21971462 DOI: 10.3233/jad-2011-0047] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cognitive event-related brain potential (ERP) studies of decision-making and attention, language, and memory impairments in Alzheimer's disease (AD) and mild cognitive impairment (MCI) are reviewed. Circumscribed lesions of the medial temporal lobe (MTL), as may be the case in individuals with amnestic MCI, generally produce altered plasticity of the late positive P600 component, with relative sparing of earlier sensory ERP components. However, as the neuropathology of AD extends to neocortical association areas, abnormalities of the P300 and N400 (and perhaps even P50) become more common. Critically, ERP studies of individuals at risk for AD may reveal neurophysiological changes prior to clinical deficits, which could advance the early detection and diagnosis of "presymptomatic AD".
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Affiliation(s)
- John M Olichney
- Department of Neurology, University of California, Davis, CA, USA.
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84
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The Role of Event-Related Potentials in Subclinical Cognitive Dysfunction in Essential Tremor. J Clin Neurophysiol 2012; 29:65-9. [DOI: 10.1097/wnp.0b013e318246ad89] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Kimiskidis VK, Papaliagkas VT. Event-related potentials for the diagnosis of mild cognitive impairment and Alzheimer's disease. ACTA ACUST UNITED AC 2011; 6:15-26. [PMID: 23480617 DOI: 10.1517/17530059.2012.634795] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Alzheimer's disease (AD) and the nosological entity of mild cognitive impairment (MCI) constitute a major public health concern. The diagnostic approach and therapeutic management of these disorders may be significantly improved by recent advances in the field of event-related potentials (ERPs). AREAS COVERED The authors performed a PubMed search in order to identify full-length, original research articles on the experimental and clinical application of ERPs in AD and MCI. The major part of the retrieved articles concerns the application of auditory and, to a lesser extent, visual ERPs for the early diagnosis of AD and MCI. Particular emphasis was placed on the role of ERPs in identifying the subgroup of MCI patients who will subsequently convert to AD. Other areas covered include the contribution of ERPs in the differential diagnosis of dementia types, the utility of ERPs for monitoring pharmacological treatment in AD and the correlation between ERPs and the results of neuropsychological testing. EXPERT OPINION The reviewed evidence suggests that ERPs hold promise as an electrophysiological tool for the early and accurate diagnosis of AD and MCI. However, certain methodological issues need to be resolved before ERPs enter the arena of clinical practice.
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Affiliation(s)
- Vasilios K Kimiskidis
- Aristotle University of Thessaloniki, Department of Neurology III, George Papanicolaou Hospital , 57010 Exokhi, Thessaloniki , Greece +302313307333, +30 2310 99 23 59 ; +2313307331 ;
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Lai CL, Hsu CY, Liou LM, Hsieh HY, Hsieh YH, Liu CK. Effect of cholesterol and CYP46 polymorphism on cognitive event-related potentials. Psychophysiology 2011; 48:1572-1577. [DOI: 10.1111/j.1469-8986.2011.01221.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Rodriguez G, Arnaldi D, Picco A. Brain functional network in Alzheimer's disease: diagnostic markers for diagnosis and monitoring. Int J Alzheimers Dis 2011; 2011:481903. [PMID: 21629749 PMCID: PMC3100570 DOI: 10.4061/2011/481903] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 03/08/2011] [Accepted: 03/22/2011] [Indexed: 11/29/2022] Open
Abstract
Alzheimer's disease (AD) is the most common type of dementia that is clinically characterized by the presence of memory impairment and later by impairment in other cognitive domains. The clinical diagnosis is based on interviews with the patient and his/her relatives and on neuropsychological assessment, which are also used to monitor cognitive decline over time. Several biomarkers have been proposed for detecting AD in its earliest stages, that is, in the predementia stage. In an attempt to find noninvasive biomarkers, researchers have investigated the feasibility of neuroimaging tools, such as MR, SPECT, and FDG-PET imaging, as well as neurophysiological measurements using EEG. In this paper, we investigate the brain functional networks in AD, focusing on main neurophysiological techniques, integrating with most relevant functional brain imaging findings.
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Affiliation(s)
- Guido Rodriguez
- Department of Neurosciences, Ophthalmology, and Genetics, Clinical Neurophysiology Unit, University of Genoa, De Toni street 5, 16132 Genoa, Italy
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Vecchio F, Määttä S. The use of auditory event-related potentials in Alzheimer's disease diagnosis. Int J Alzheimers Dis 2011; 2011:653173. [PMID: 21629759 PMCID: PMC3100636 DOI: 10.4061/2011/653173] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Accepted: 03/09/2011] [Indexed: 11/30/2022] Open
Abstract
Event-related potentials (ERPs) are important clinical and research instruments in neuropsychiatry, particularly due to their strategic role for the investigation of brain function. These techniques are often underutilized in the evaluation of neurological and psychiatric disorders, but ERPs are noninvasive instruments that directly reflect cortical neuronal activity. Previous studies using the P300, P3a, and MMN components of the ERP to study dementing illness are reviewed. The results suggest that particularly the P300 brain potential is sensitive to Alzheimer's disease processes during its early stages, and that easily performed stimulus discrimination tasks are the clinically most useful. Finally, these data suggest that the P300 ERP can aid in the diagnosis of dementia and may help in the assessment of early Alzheimer's disease.
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Affiliation(s)
- Fabrizio Vecchio
- Associazione Fatebenefratelli per la Ricerca, Dipartimento Neuroscienze, Ospedale Fatebenefratelli, Isola Tiberina, Rome, Italy
| | - Sara Määttä
- Department of Clinical Neurophysiology, Kuopio University Hospital, Kuopio, Finland
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Cognitive evoked potentials in narcolepsy: A review of the literature. Neurosci Biobehav Rev 2011; 35:1144-53. [DOI: 10.1016/j.neubiorev.2010.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2010] [Revised: 10/26/2010] [Accepted: 12/05/2010] [Indexed: 12/14/2022]
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Effect of Memantine in Alzheimer's Disease Evaluated By Visual-Evoked Potentials to Pattern-Reversal, Motion-Onset, and Cognitive Stimuli. J Clin Neurophysiol 2010; 27:334-40. [DOI: 10.1097/wnp.0b013e3181f413cb] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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