1
|
Treatment effects on event-related EEG potentials and oscillations in Alzheimer's disease. Int J Psychophysiol 2022; 177:179-201. [PMID: 35588964 DOI: 10.1016/j.ijpsycho.2022.05.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 11/23/2022]
Abstract
Alzheimer's disease dementia (ADD) is the most diffuse neurodegenerative disorder belonging to mild cognitive impairment (MCI) and dementia in old persons. This disease is provoked by an abnormal accumulation of amyloid-beta and tauopathy proteins in the brain. Very recently, the first disease-modifying drug has been licensed with reserve (i.e., Aducanumab). Therefore, there is a need to identify and use biomarkers probing the neurophysiological underpinnings of human cognitive functions to test the clinical efficacy of that drug. In this regard, event-related electroencephalographic potentials (ERPs) and oscillations (EROs) are promising candidates. Here, an Expert Panel from the Electrophysiology Professional Interest Area of the Alzheimer's Association and Global Brain Consortium reviewed the field literature on the effects of the most used symptomatic drug against ADD (i.e., Acetylcholinesterase inhibitors) on ERPs and EROs in ADD patients with MCI and dementia at the group level. The most convincing results were found in ADD patients. In those patients, Acetylcholinesterase inhibitors partially normalized ERP P300 peak latency and amplitude in oddball paradigms using visual stimuli. In these same paradigms, those drugs partially normalize ERO phase-locking at the theta band (4-7 Hz) and spectral coherence between electrode pairs at the gamma (around 40 Hz) band. These results are of great interest and may motivate multicentric, double-blind, randomized, and placebo-controlled clinical trials in MCI and ADD patients for final cross-validation.
Collapse
|
2
|
Coebergh JAF, McDowell S, van Woerkom TCAM, Koopman JP, Mulder J, Bruijn SFTM. Auditory Agnosia for Environmental Sounds in Alzheimer's Disease: Not Hearing and Not Listening? J Alzheimers Dis 2021; 73:1407-1419. [PMID: 31958091 DOI: 10.3233/jad-190431] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Auditory agnosia for environmental sounds (AES) is an example of central auditory dysfunction. It is presumed to be independent of language deficits and in presence of normal hearing. We undertook a detailed neuropsychological assessment including environmental sound naming and recognition in 34 clinically mild Alzheimer's disease (AD) patients and 29 age-matched healthy control subjects. In patients with AD, audiometry was performed to assess the impact on test performance, and in normal controls the Hearing Handicap Inventory for the Elderly - Screening Version to exclude more than mild hearing loss. We adapted a validated environmental sound battery and found near perfect scores in controls. We found that environmental sound agnosia is common in mild AD. We found a statistically significant difference in mean pure tone audiometry in the best ear between patients with and those patients without naming deficits of 11.3 dB (p = 0.010) and of 14.7 dB (p = 0.000) between those with and without recognition deficits. Statistical significance remained after correcting for age, aphasia, Mini-Mental State Examination score, and working memory. Slight and moderate peripheral hearing loss increases the odds ratio of recognition deficits by 13.75 (confidence interval 2.3-81.5) compared to normal hearing patients. We did not find evidence for different forms of AES. This work suggests that an interaction between peripheral hearing loss and AD pathology produces problems with environmental sound recognition. It confirms that the relationship between hearing and dementia is complex but also suggests that interventions to prevent and treat hearing loss could have an effect on AD in its clinical expression.
Collapse
Affiliation(s)
- Jan A F Coebergh
- Department of Neurology, HagaHospital, The Hague, The Netherlands.,Department of Neurology, Ashford and St. Peter's Hospital, Chertsey, United Kingdom.,Department of Neurology, St. George's Hospital, Tooting, United Kingdom
| | - Steven McDowell
- Department of Neurology, HagaHospital, The Hague, The Netherlands
| | | | - Jan P Koopman
- Department of Ear, Nose and Throat Surgery, HagaHospital, The Hague, The Netherlands
| | - Jacqueline Mulder
- Department of Neuropsychology, HagaHospital, The Hague, The Netherlands
| | | |
Collapse
|
3
|
Morrison C, Rabipour S, Taler V, Sheppard C, Knoefel F. Visual Event-Related Potentials in Mild Cognitive Impairment and Alzheimer's Disease: A Literature Review. Curr Alzheimer Res 2020; 16:67-89. [PMID: 30345915 DOI: 10.2174/1567205015666181022101036] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/26/2018] [Accepted: 10/15/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cognitive deficits are correlated with increasing age and become more pronounced for people with mild cognitive impairment (MCI) and dementia caused by Alzheimer's disease (AD). Conventional methods to diagnose cognitive decline (i.e., neuropsychological testing and clinical judgment) can lead to false positives. Tools such as electroencephalography (EEG) offer more refined, objective measures that index electrophysiological changes associated with healthy aging, MCI, and AD. OBJECTIVE We sought to review the EEG literature to determine whether visual event-related potentials (ERPs) can distinguish between healthy aging, MCI, and AD. METHOD We searched Medline and PyscInfo for articles published between January 2005 and April 2018. Articles were considered for review if they included participants aged 60+ who were healthy older adults or people with MCI and AD, and examined at least one visually elicited ERP component. RESULTS Our search revealed 880 records, of which 34 satisfied the inclusion criteria. All studies compared cognitive function between at least two of the three groups (healthy older adults, MCI, and AD). The most consistent findings related to the P100 and the P3b; while the P100 showed no differences between groups, the P3b showed declines in amplitude in MCI and AD. CONCLUSION Visually elicited ERPs can offer insight into the cognitive processes that decline in MCI and AD. The P3b may be useful in identifying older adults who may develop MCI and AD, and more research should examine the sensitivity and specificity of this component when diagnosing MCI and AD.
Collapse
Affiliation(s)
- Cassandra Morrison
- School of Psychology, University of Ottawa, Canada, & Bruyère Research Institute, Ottawa, Canada
| | - Sheida Rabipour
- School of Psychology, University of Ottawa, Canada, & Bruyère Research Institute, Ottawa, Canada
| | - Vanessa Taler
- School of Psychology, University of Ottawa, Canada, & Bruyère Research Institute, Ottawa, Canada
| | - Christine Sheppard
- Bruyere Research Institute, Ottawa, Canada & School of Public Health and Health Systems, University of Waterloo, Waterloo, Canada
| | - Frank Knoefel
- Faculty of Medicine, University of Ottawa, Canada, Bruyère Research Institute, & Carleton University, Ottawa, Canada
| |
Collapse
|
4
|
Dürschmid S, Reichert C, Kuhn J, Freund HJ, Hinrichs H, Heinze HJ. Deep brain stimulation of the nucleus basalis of Meynert attenuates early EEG components associated with defective sensory gating in patients with Alzheimer disease - a two-case study. Eur J Neurosci 2017; 51:1201-1209. [PMID: 29055119 DOI: 10.1111/ejn.13749] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 09/22/2017] [Accepted: 10/03/2017] [Indexed: 12/17/2022]
Abstract
Alzheimer's disease (AD) is associated with deterioration of memory and cognitive function and a degeneration of neurons of the nucleus basalis of Meynert (NBM). The NBM is the major input source of acetylcholine (ACh) to the cortex. The decreasing cholinergic innervation of the cortex due to degeneration of the NBM might be the cause of loss of memory function. NBM-Deep brain stimulation (NBM-DBS) is considered to serve as a potential therapeutic option for patients with AD by supporting residual cholinergic transmission to stabilize oscillatory activity in memory-relevant circuits. However, whether DBS could improve sensory memory functions in patients with AD is not clear. Here, in a passive auditory oddball paradigm, patients with AD (N = 2) listened to repetitive background tones (standard tones) randomly interrupted by frequency deviants in two blocks with NBM-DBS OFF and then NBM-DBS ON, while age-matched healthy controls (N = 6) repeated the experiment twice. The mismatch negativity in NBM-DBS OFF significantly differed from controls in both blocks, but not under NBM-DBS, which was likely due to a pronounced P50 increase overlapping with the N1 in NBM-DBS OFF. This early complex of EEG components recovered under stimulation to a normal level as defined by responses in controls. In this temporal interval, we found in patients with NBM-DBS ON (but not with NBM-DBS OFF) and in controls a strong repetition suppression effect to standard tones - with more attenuated responses to frequently repeated standard tones. This highlights the role of NBM-DBS for sensory gating of familiar auditory information into sensory memory.
Collapse
Affiliation(s)
- Stefan Dürschmid
- Department of Behavioral Neurology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39120, Magdeburg, Germany.,Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany
| | - Christoph Reichert
- Department of Behavioral Neurology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39120, Magdeburg, Germany
| | - Jens Kuhn
- Department of Psychiatry and Psychotherapy, Medical Faculty, University of Cologne, Cologne, Germany.,Johanniter Hospital Oberhausen, EVKLN, Oberhausen, Germany
| | | | - Hermann Hinrichs
- Department of Behavioral Neurology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39120, Magdeburg, Germany.,Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany.,Stereotactic Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany.,German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany.,CBBS - center of behavioral brain sciences, Otto-von-Guericke University, Magdeburg, Germany
| | - Hans-Jochen Heinze
- Department of Behavioral Neurology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39120, Magdeburg, Germany.,Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany.,Stereotactic Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany.,German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany.,CBBS - center of behavioral brain sciences, Otto-von-Guericke University, Magdeburg, Germany
| |
Collapse
|
5
|
Gu L, Zhang Z. Exploring Potential Electrophysiological Biomarkers in Mild Cognitive Impairment: A Systematic Review and Meta-Analysis of Event-Related Potential Studies. J Alzheimers Dis 2017; 58:1283-1292. [PMID: 28550252 DOI: 10.3233/jad-161286] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Lihua Gu
- Department of Neurology, Affiliated Zhong Da Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Zhijun Zhang
- Department of Neurology, Affiliated Zhong Da Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| |
Collapse
|
6
|
Blom JD, Coebergh JAF, Lauw R, Sommer IEC. Musical hallucinations treated with acetylcholinesterase inhibitors. Front Psychiatry 2015; 6:46. [PMID: 25904872 PMCID: PMC4387860 DOI: 10.3389/fpsyt.2015.00046] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 03/18/2015] [Indexed: 11/21/2022] Open
Abstract
Musical hallucinations are relatively rare auditory percepts which, due to their intrusive nature and the accompanying fear of impending mental decline, tend to cause significant distress and impairment. Although their etiology and pathophysiology appear to be heterogeneous and no evidence-based treatment methods are available, case reports indicate that acetylcholinesterase inhibitors may yield positive results in patients with comorbid hearing loss. We present two female patients (aged 76 and 78 years) both of whom suffered from hearing impairment and practically incessant musical hallucinations. Both patients were successfully treated with the acetylcholinesterase inhibitor rivastigmine. Based on these two case descriptions and an overview of studies describing the use of acetylcholinesterase inhibitors in similar patients, we discuss possible mechanisms and propose further research on the use of acetylcholinesterase inhibitors for musical hallucinations experienced in concordance with hearing loss.
Collapse
Affiliation(s)
- Jan Dirk Blom
- Parnassia Psychiatric Institute , The Hague , Netherlands ; Department of Psychiatry, University of Groningen , Groningen , Netherlands
| | - Jan Adriaan F Coebergh
- Department of Neurology, Ashford and St. Peter's Hospitals , Chertsey , UK ; Department of Neurology, St. George's Hospital , London , UK
| | - René Lauw
- Parnassia Psychiatric Institute , The Hague , Netherlands
| | - Iris E C Sommer
- Department of Psychiatry, University Medical Center Utrecht , Utrecht , Netherlands ; Rudolf Magnus Institute of Neuroscience , Utrecht , Netherlands
| |
Collapse
|
7
|
Babri S, Mohaddes G, Feizi I, Mohammadnia A, Niapour A, Alihemmati A, Amani M. Effect of troxerutin on synaptic plasticity of hippocampal dentate gyrus neurons in a β-amyloid model of Alzheimer׳s disease: An electrophysiological study. Eur J Pharmacol 2014; 732:19-25. [DOI: 10.1016/j.ejphar.2014.03.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 03/11/2014] [Accepted: 03/17/2014] [Indexed: 01/08/2023]
|
8
|
Chapman RM, Porsteinsson AP, Gardner MN, Mapstone M, McCrary JW, Sandoval TC, Guillily MD, Reilly LA, DeGrush E. The impact of AD drug treatments on event-related potentials as markers of disease conversion. Curr Alzheimer Res 2014; 10:732-41. [PMID: 23905997 DOI: 10.2174/15672050113109990148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 07/17/2013] [Indexed: 11/22/2022]
Abstract
This paper investigates how commonly prescribed pharmacologic treatments for Alzheimer's disease (AD) affect Event-Related Potential (ERP) biomarkers as tools for predicting AD conversion in individuals with Mild Cognitive Impairment (MCI). We gathered baseline ERP data from two MCI groups (those taking AD medications and those not) and later determined which subjects developed AD (Convert->AD) and which subjects remained cognitively stable (Stable). We utilized a previously developed and validated multivariate system of ERP components to measure medication effects among these four subgroups. Discriminant analysis produced classification scores for each individual as a measure of similarity to each clinical group (Convert->AD, Stable), and we found a large significant main Group effect but no main AD Medications effect and no Group by Medications interaction. This suggested AD medications have negligible influence on this set of ERP components as weighted markers of disease progression. These results provide practical information to those using ERP measures as a biomarker to identify and track AD in individuals in a clinical or research setting.
Collapse
Affiliation(s)
- Robert M Chapman
- Department of Brain and Cognitive Sciences, 775 Library Road, University of Rochester, Rochester, NY 14627, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Schefter M, Werheid K, Almkvist O, Lönnqvist-Akenine U, Kathmann N, Winblad B. Recognition memory for emotional faces in amnestic mild cognitive impairment: An event-related potential study. AGING NEUROPSYCHOLOGY AND COGNITION 2013; 20:49-79. [DOI: 10.1080/13825585.2012.665021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
10
|
Metzger FG, Polak T, Aghazadeh Y, Ehlis AC, Hagen K, Fallgatter AJ. Vagus somatosensory evoked potentials--a possibility for diagnostic improvement in patients with mild cognitive impairment? Dement Geriatr Cogn Disord 2012; 33:289-96. [PMID: 22759638 DOI: 10.1159/000339359] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/02/2012] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE Vagus somatosensory evoked potentials (VSEP) are far-field potentials probably generated in nuclei of then. vagus in the lower brainstem. They represent a putative, easily applicable method for discrimination between patients with Alzheimer's disease (AD), patients with mild cognitive impairment (MCI), and healthy controls (HC). METHODS Thirteen patients with AD, 12 with MCI, and 27 age- and gender-matched HC were investigated by stimulating the cutaneous branch of the n. vagus; 8, 6, and 20, respectively, were included in the main part of the analysis. RESULTS In fronto-central recordings (electrode positions Fz-F4) a grading from HC over MCI to AD could be found, with a significant linear trend over the three groups and significantly increased latencies of the cognitively impaired patients but no significant difference between MCI and AD. CONCLUSION The results indicate that the method of VSEP is able to discriminate between cognitively declined patients and HC, whereas no clear-cut differences were detected between MCI and AD.
Collapse
Affiliation(s)
- Florian G Metzger
- Psychophysiology and Optical Imaging, Department of Psychiatry and Psychotherapy, University Hospital Tuebingen, Tuebingen, Germany.
| | | | | | | | | | | |
Collapse
|
11
|
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".
Collapse
Affiliation(s)
- John M Olichney
- Department of Neurology, University of California, Davis, CA, USA.
| | | | | | | |
Collapse
|