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Szanyi J, Kremlacek J, Kubova Z, Kuba M, Vit F, Langrova J, Gebousky P, Szanyi J. Optic nerve involvement in patients with Lyme neuroborreliosis: an electrophysiological study. Doc Ophthalmol 2024:10.1007/s10633-024-09975-w. [PMID: 38622306 DOI: 10.1007/s10633-024-09975-w] [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: 09/08/2023] [Accepted: 03/28/2024] [Indexed: 04/17/2024]
Abstract
PURPOSE The aim of this neurophysiological study was to retrospectively analyze visual evoked potentials (VEPs) acquired during an examination for diagnosing optic nerve involvement in patients with Lyme neuroborreliosis (LNB). Attention was focused on LNB patients with peripheral facial palsy (PFP) and optic nerve involvement. METHODS A total of 241 Czech patients were classified as having probable/definite LNB (193/48); of these, 57 were younger than 40 years, with a median age of 26.3 years, and 184 were older than 40 years, with a median age of 58.8 years. All patients underwent pattern-reversal (PVEP) and motion-onset (MVEP) VEP examinations. RESULTS Abnormal VEP results were observed in 150/241 patients and were noted more often in patients over 40 years (p = 0.008). Muscle/joint problems and paresthesia were observed to be significantly more common in patients older than 40 years (p = 0.002, p = 0.030), in contrast to headache and decreased visual acuity, which were seen more often in patients younger than 40 years (p = 0.001, p = 0.033). Peripheral facial palsy was diagnosed in 26/241 LNB patients. Among patients with PFP, VEP peak times above the laboratory limit was observed in 22 (84.6%) individuals. Monitoring of patients with PFP and pathological VEP showed that the adjustment of visual system function occurred in half of the patients in one to more years, in contrast to faster recovery from peripheral facial palsy within months in most patients. CONCLUSION In LNB patients, VEP helps to increase sensitivity of an early diagnostic process.
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Affiliation(s)
- Jana Szanyi
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic.
| | - Jan Kremlacek
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Zuzana Kubova
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Miroslav Kuba
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Frantisek Vit
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Jana Langrova
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Pavel Gebousky
- Department of Infectious Diseases, Faculty Hospital in Hradec Kralove, Hradec Kralove, Czech Republic
| | - Juraj Szanyi
- Department of Infectious Diseases, Faculty Hospital in Hradec Kralove, Hradec Kralove, Czech Republic
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Kuba M, Kremláček J, Vít F, Masopust J, Hubeňák J, Kubová Z, Szanyi J, Ramešová L, Chutná M, Langrová J. New portable device for an examination of visual cognitive evoked potentials might extend their diagnostic applications in psychiatry. Psychiatry Res Neuroimaging 2024; 337:111768. [PMID: 38128365 DOI: 10.1016/j.pscychresns.2023.111768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 11/16/2023] [Accepted: 11/26/2023] [Indexed: 12/23/2023]
Abstract
Despite positive prior results obtained by using event-related potentials (ERPs) in psychiatric patients, they are not routinely used in the clinical setting. This may in part be due to problems regarding a lack of transportable equipment availability. It can be difficult for these patients to repeatedly visit electrophysiological laboratories. To address this issue, we propose using a new, fully portable device for visually evoked potentials (VEP) and cognitive function assessment, that can be used for quick examinations (https://www.veppeak.com). Our device, called "VEPpeak", is built into a headset with a color LED visual stimulator. It weighs 390 g and is connected to a notebook (PC) with evaluation software via USB. In this pilot study, we verified the device's usability in 31 patients with schizophrenia. We used the oddball paradigm with the recognition of colors for the P300 wave and choice reaction time evaluation. The examination lasted only about ten minutes. The results indicated good reproducibility of large cognitive potentials (P300) with prolonged P300 latencies and reduced amplitudes in patients compared to 15 control subjects. The P300 latency and reaction time prolongation in patients correlated with their age and the sedative effect of the pharmacotherapy.
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Affiliation(s)
- Miroslav Kuba
- Electrophysiological lab, Department of Pathophysiology, Charles University - Faculty of Medicine in Hradec Králové, Czech Republic.
| | - Jan Kremláček
- Electrophysiological lab, Department of Medical Biophysics, Charles University - Faculty of Medicine in Hradec Králové, Czech Republic
| | - František Vít
- Electrophysiological lab, Department of Pathophysiology, Charles University - Faculty of Medicine in Hradec Králové, Czech Republic
| | - Jiří Masopust
- Department of Psychiatry, University Hospital in Hradec Králové, Czech Republic
| | - Jan Hubeňák
- Department of Psychiatry, University Hospital in Hradec Králové, Czech Republic
| | - Zuzana Kubová
- Electrophysiological lab, Department of Pathophysiology, Charles University - Faculty of Medicine in Hradec Králové, Czech Republic
| | - Jana Szanyi
- Electrophysiological lab, Department of Pathophysiology, Charles University - Faculty of Medicine in Hradec Králové, Czech Republic
| | - Lenka Ramešová
- Electrophysiological lab, Department of Pathophysiology, Charles University - Faculty of Medicine in Hradec Králové, Czech Republic
| | - Marie Chutná
- Electrophysiological lab, Department of Pathophysiology, Charles University - Faculty of Medicine in Hradec Králové, Czech Republic
| | - Jana Langrová
- Electrophysiological lab, Department of Pathophysiology, Charles University - Faculty of Medicine in Hradec Králové, Czech Republic
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Pitt KM, Cole ZJ, Zosky J. Promoting Simple and Engaging Brain-Computer Interface Designs for Children by Evaluating Contrasting Motion Techniques. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2023; 66:3974-3987. [PMID: 37696046 DOI: 10.1044/2023_jslhr-23-00292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
PURPOSE There is an increasing focus on using motion in augmentative and alternative communication (AAC) systems. In considering brain-computer interface access to AAC (BCI-AAC), motion may provide a simpler or more intuitive avenue for BCI-AAC control. Different motion techniques may be utilized in supporting competency with AAC devices including simple (e.g., zoom) and complex (behaviorally relevant animation) methods. However, how different pictorial symbol animation techniques impact BCI-AAC is unclear. METHOD Sixteen healthy children completed two experimental conditions. These conditions included highlighting of pictorial symbols via both functional (complex) and zoom (simple) animation to evaluate the effects of motion techniques on P300-based BCI-AAC signals and offline (predicted) BCI-AAC performance. RESULTS Functional (complex) animation significantly increased attentional-related P200/P300 event-related potential (ERP) amplitudes in the parieto-occipital area. Zoom (simple) animation significantly decreased N400 latency. N400 ERP amplitude was significantly greater, and occurred significantly earlier, on the right versus left side for the functional animation condition within the parieto-occipital bin. N200 ERP latency was significantly reduced over the left hemisphere for the zoom condition in the central bin. As hypothesized, elicitation of all targeted ERP components supported offline (predicted) BCI-AAC performance being similar between conditions. CONCLUSION Study findings provide continued support for the use of animation in BCI-AAC systems for children and highlight differences in neural and attentional processing between complex and simple animation techniques. SUPPLEMENTAL MATERIAL https://doi.org/10.23641/asha.24085623.
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Affiliation(s)
- Kevin M Pitt
- Department of Special Education and Communication Disorders, University of Nebraska-Lincoln
| | - Zachary J Cole
- Department of Psychology, University of Nebraska-Lincoln
| | - Joshua Zosky
- Department of Psychology, University of Nebraska-Lincoln
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Abstract
INTRODUCTION We developed a new portable device called "VEPpeak" for the examination of visual evoked potentials (VEPs) to extend VEP examination beyond specialized electrophysiological laboratories and to simplify the use of this objective, noninvasive, and low-cost method for diagnostics of visual and central nervous system dysfunctions. METHODS VEPpeak consists of a plastic headset with a total weight of 390 g containing four EEG amplifiers, an A/D converter, a control unit, and a visual LED stimulator built in the front, vertically adjustable peak. The device is powered and controlled via USB connection from a standard PC/notebook using custom software for visual stimuli generation and for VEP recording and processing. Up to four electrodes can be placed at any scalp location or in combination with two dry electrodes incorporated into the headset. External visual stimulators, such as a tablet, can be used with synchronization. Feasibility and validation studies were conducted with 86 healthy subjects and 76 neuro-ophthalmological patients including 67 who were during the same session also tested with a conventional VEP system. RESULTS VEPpeak recordings to standard (pattern-reversal) and non-standard (motion-onset, red-green alternation) were robust and repeatable and obtained also in immobilized patients. Good comparability of results was achieved between VEPpeak and standard examination. Some systematic differences in peak latencies and amplitudes are consistent with differences in stimulus characteristics of the two compared systems. DISCUSSION VEPpeak provides an inexpensive system for clinical use requiring portability. In addition to ISCEV standard VEP protocols, free choice of stimuli and bio-signal recordings make the device universal for many electrophysiological purposes.
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Omejc N, Peskar M, Miladinović A, Kavcic V, Džeroski S, Marusic U. On the Influence of Aging on Classification Performance in the Visual EEG Oddball Paradigm Using Statistical and Temporal Features. Life (Basel) 2023; 13:life13020391. [PMID: 36836747 PMCID: PMC9965040 DOI: 10.3390/life13020391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 01/23/2023] [Accepted: 01/28/2023] [Indexed: 02/04/2023] Open
Abstract
The utilization of a non-invasive electroencephalogram (EEG) as an input sensor is a common approach in the field of the brain-computer interfaces (BCI). However, the collected EEG data pose many challenges, one of which may be the age-related variability of event-related potentials (ERPs), which are often used as primary EEG BCI signal features. To assess the potential effects of aging, a sample of 27 young and 43 older healthy individuals participated in a visual oddball study, in which they passively viewed frequent stimuli among randomly occurring rare stimuli while being recorded with a 32-channel EEG set. Two types of EEG datasets were created to train the classifiers, one consisting of amplitude and spectral features in time and another with extracted time-independent statistical ERP features. Among the nine classifiers tested, linear classifiers performed best. Furthermore, we show that classification performance differs between dataset types. When temporal features were used, maximum individuals' performance scores were higher, had lower variance, and were less affected overall by within-class differences such as age. Finally, we found that the effect of aging on classification performance depends on the classifier and its internal feature ranking. Accordingly, performance will differ if the model favors features with large within-class differences. With this in mind, care must be taken in feature extraction and selection to find the correct features and consequently avoid potential age-related performance degradation in practice.
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Affiliation(s)
- Nina Omejc
- Department of Knowledge Technologies, Jožef Stefan Institute, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, 1000 Ljubljana, Slovenia
- Correspondence:
| | - Manca Peskar
- Institute for Kinesiology Research, Science and Research Centre Koper, 6000 Koper, Slovenia
- Biological Psychology and Neuroergonomics, Department of Psychology and Ergonomics, Faculty V: Mechanical Engineering and Transport Systems, Technische Universität Berlin, 10623 Berlin, Germany
| | - Aleksandar Miladinović
- Department of Ophthalmology, Institute for Maternal and Child Health-IRCCS Burlo Garofolo, 34137 Trieste, Italy
| | - Voyko Kavcic
- Institute of Gerontology, Wayne State University, Detroit, MI 48202, USA
- International Institute of Applied Gerontology, 1000 Ljubljana, Slovenia
| | - Sašo Džeroski
- Department of Knowledge Technologies, Jožef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Uros Marusic
- Institute for Kinesiology Research, Science and Research Centre Koper, 6000 Koper, Slovenia
- Department of Health Sciences, Alma Mater Europaea—ECM, 2000 Maribor, Slovenia
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Chua HS, Miller KJI, Sayyeda NA, AttaAlla MRYI, Babikir EOE, Kremláček J, Kuba M. Evaluation of Diurnal Changes of Mental Fatigue Using a New Portable Device for Visual Cognitive Evoked Potentials. ACTA MEDICA (HRADEC KRALOVE) 2023; 66:55-60. [PMID: 37930094 DOI: 10.14712/18059694.2023.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
In the age homogenous group of 13 healthy volunteers, we examined visual evoked potentials (VEP) visually evoked cognitive potentials (event-related potentials - ERP) and choice reaction time (CRT) five times during the day (from 10.00 a.m. up to midnight) to verify whether there are significant changes of the measured parameters of the cortical evoked potentials and CRT which might reflect the level of the mental fatigue. The electrophysiological testing was done with the use of a new portable VEP device named "VEPpeak" enabling to perform the examination outside standard labs in almost any conditions. It was found that the latency of ERP (P300 peak time) and CRT displayed significant prolongation toward midnight while VEP latency and all amplitudes did not change significantly. This pilot study supports our idea that the portable VEP device possibly might be used for the objective examination of mental fatigue that is needed in many situations. This should be confirmed in a larger study also including a comparison with non-electrophysiological fatigue testing.
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Affiliation(s)
- Huey Shin Chua
- Charles University, Faculty of Medicine in Hradec Králové, Dept. of Pathophysiology, Hradec Králové, Czech Republic
| | - Katrin Ji-In Miller
- Charles University, Faculty of Medicine in Hradec Králové, Dept. of Pathophysiology, Hradec Králové, Czech Republic
| | - Niha Akhtar Sayyeda
- Charles University, Faculty of Medicine in Hradec Králové, Dept. of Pathophysiology, Hradec Králové, Czech Republic
| | | | - Eithar Osama Eltayeb Babikir
- Charles University, Faculty of Medicine in Hradec Králové, Dept. of Pathophysiology, Hradec Králové, Czech Republic
| | - Jan Kremláček
- Charles University - Faculty of Medicine in Hradec Králové, Dept. of Medical Biophysics, Hradec Králové, Czech Republic
| | - Miroslav Kuba
- Charles University, Faculty of Medicine in Hradec Králové, Dept. of Pathophysiology, Hradec Králové, Czech Republic.
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Kordek D, Voda P, Young LK, Kremlacek J. Effect of Dioptric Blur on Pattern-Reversal and Motion-Onset VEPs as Used in Clinical Research. Transl Vis Sci Technol 2022; 11:7. [PMID: 36472879 PMCID: PMC9733653 DOI: 10.1167/tvst.11.12.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose To describe the effect of dioptric blur on visual evoked potentials (VEPs) induced by motion onset (MO-VEPs). Methods The effect of dioptric blur up to 4 D on MO-VEPs was tested on 12 subjects using central, peripheral, and full-field stimulation with a low-contrast structure of concentric circles with spatial frequency <1 c/°. The results were compared to VEPs evoked by 15' and 60' checkerboard pattern-reversal (PR-VEPs). The relationship between peak time and interpeak amplitude of the dominant components was related to the level of dioptric blur using linear regression. Results The MO-VEPs did not show a significant peak prolongation (P > 0.28) or amplitude attenuation (P > 0.14) with the blur, whereas for the PR-VEPs we observed a significant decrease in amplitude (P < 0.001) and increase in peak time (P < 0.001) for both checkerboard sizes. Conclusions For MO-VEPs induced by radial motion of low contrast and low spatial frequency pattern, the change in retinal blur does not affect the peak time or the interpeak amplitude of the dominant N2 component. Translational Relevance The resistance to retinal blur that we demonstrated for MO-VEP provides a diagnostic opportunity to test the integrity of the visual system and reveal a retrobulbar impairment even in uncorrected refractive errors.
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Affiliation(s)
- David Kordek
- Department of Biophysics, Faculty of Medicine, Charles University, Hradec Kralove, Czech Republic
| | - Petr Voda
- Department of Biophysics, Faculty of Medicine, Charles University, Hradec Kralove, Czech Republic
| | - Laura K. Young
- Biosciences Institute, Newcastle University, Newcastle, UK
| | - Jan Kremlacek
- Department of Biophysics, Faculty of Medicine, Charles University, Hradec Kralove, Czech Republic
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Guénot J, Trotter Y, Fricker P, Cherubini M, Soler V, Cottereau BR. Optic Flow Processing in Patients With Macular Degeneration. Invest Ophthalmol Vis Sci 2022; 63:21. [DOI: 10.1167/iovs.63.12.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Jade Guénot
- Centre de Recherche Cerveau et Cognition, Université Toulouse III–Paul Sabatier, Toulouse, France
- Centre National de la Recherche Scientifique, Toulouse Cedex–CNRS: UMR5549, Toulouse, France
| | - Yves Trotter
- Centre de Recherche Cerveau et Cognition, Université Toulouse III–Paul Sabatier, Toulouse, France
- Centre National de la Recherche Scientifique, Toulouse Cedex–CNRS: UMR5549, Toulouse, France
| | - Paul Fricker
- Centre de Recherche Cerveau et Cognition, Université Toulouse III–Paul Sabatier, Toulouse, France
- Centre National de la Recherche Scientifique, Toulouse Cedex–CNRS: UMR5549, Toulouse, France
| | - Marta Cherubini
- Centre de Recherche Cerveau et Cognition, Université Toulouse III–Paul Sabatier, Toulouse, France
- Centre National de la Recherche Scientifique, Toulouse Cedex–CNRS: UMR5549, Toulouse, France
| | - Vincent Soler
- Centre de Recherche Cerveau et Cognition, Université Toulouse III–Paul Sabatier, Toulouse, France
- Centre National de la Recherche Scientifique, Toulouse Cedex–CNRS: UMR5549, Toulouse, France
- Unité de rétine, consultation d'ophtalmologie, hôpital Pierre-Paul-Riquet, CHU Toulouse, Toulouse, France
| | - Benoit R. Cottereau
- Centre de Recherche Cerveau et Cognition, Université Toulouse III–Paul Sabatier, Toulouse, France
- Centre National de la Recherche Scientifique, Toulouse Cedex–CNRS: UMR5549, Toulouse, France
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Yerlikaya D, Hünerli-Gündüz D, Fide E, Özbek Y, Kıyı İ, Öztura İ, Yener GG. The reliability of P300 and the influence of age, gender and education variables in a 50 years and older normative sample. Int J Psychophysiol 2022; 181:1-13. [PMID: 35988895 DOI: 10.1016/j.ijpsycho.2022.08.002] [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: 02/23/2022] [Revised: 08/10/2022] [Accepted: 08/16/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES The present study aims to investigate the effects of age, gender, and level of education on P300 in a healthy population, aged 50 years and over; and determine the reliability metrics for different conditions and measurement methods. METHOD Auditory and visual oddball recordings of 171 healthy adults were investigated. A fully automated preprocessing was applied to elicit ERP P300. Maximum peak amplitude, latency and mean amplitudes were measured. Data were stratified by age, gender, and education to determine group-level differences by using repeat measures of ANOVA. The internal consistency of P300 was calculated by a split-half method using odd-even segments. Test-retest reliability was assessed by calculating the intraclass correlation coefficient (ICC). RESULTS Maximum peak P300 amplitudes were higher in the 50-64 years age group compared to the >65 years age group; and females showed increased P300 amplitudes compared to males. P300 measures showed fair to good internal consistency and poor to good test-retest reliability. CONCLUSION Age and gender should be taken into account when designing ERP studies with elderly individuals. P300 showed good internal consistency in general, between gender groups and age groups. Long-term test-retest reliability was lower but acceptable. These findings can be interpreted as the strength of P300 by being an objective and reliable method independent of cultural differences. Here we underline several factors that may affect P300 measures and discuss other possible factors that should be standardized for P300 to be used in clinical settings.
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Affiliation(s)
- Deniz Yerlikaya
- Department of Neurosciences, Institute of Health Sciences, Dokuz Eylül University, 35340 Izmir, Turkey
| | - Duygu Hünerli-Gündüz
- Department of Neurosciences, Institute of Health Sciences, Dokuz Eylül University, 35340 Izmir, Turkey
| | - Ezgi Fide
- Department of Neurosciences, Institute of Health Sciences, Dokuz Eylül University, 35340 Izmir, Turkey
| | - Yağmur Özbek
- Department of Neurosciences, Institute of Health Sciences, Dokuz Eylül University, 35340 Izmir, Turkey
| | - İlayda Kıyı
- Department of Neurosciences, Institute of Health Sciences, Dokuz Eylül University, 35340 Izmir, Turkey
| | - İbrahim Öztura
- Department of Neurology, Dokuz Eylül University Medical School, 35340 Izmir, Turkey; Brain Dynamics Multidisciplinary Research Center, Dokuz Eylül University, 35340 Izmir, Turkey.
| | - Görsev G Yener
- Brain Dynamics Multidisciplinary Research Center, Dokuz Eylül University, 35340 Izmir, Turkey; İzmir University of Economics, Faculty of Medicine, 35330 Izmir, Turkey; Izmir International Biomedicine and Genome Institute, Dokuz Eylul University, Izmir, Turkey.
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EL KHOUSHT MM, DABBOUS AO, ABD-ELALEIM ZT, HAMDY HS. Effect of presbycusis on P3 auditory evoked potentials. OTORHINOLARYNGOLOGY 2022; 72. [DOI: 10.23736/s2724-6302.22.02404-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Shen T, Sheriff S, You Y, Jiang J, Schulz A, Francis H, Mirzaei M, Saks D, Chitranshi N, Gupta V, Singh MF, Klistorner A, Wen W, Sachdev P, Gupta VK, Graham SL. Evaluating associations of RNFL thickness and multifocal VEP with cognitive assessment and brain MRI volumes in older adults: Optic nerve decline and cognitive change (ONDCC) initiative. AGING BRAIN 2022; 2:100049. [PMID: 36908892 PMCID: PMC9997126 DOI: 10.1016/j.nbas.2022.100049] [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: 12/06/2021] [Revised: 07/31/2022] [Accepted: 08/09/2022] [Indexed: 11/20/2022] Open
Abstract
To examine the relationships of retinal structural (optical coherence tomography) and visual functional (multifocal visual evoked potentials, mfVEP) indices with neuropsychological and brain structural measurements in healthy older subjects. 95 participants (mean (SD) age 68.1 (9.0)) years were recruited in the Optic Nerve Decline and Cognitive Change (ONDCC) study in this observational clinical investigation. OCT was conducted for retinal nerve fibre layer (RNFL) and mfVEP for amplitude and latency measurements. Participants undertook neuropsychological tests for cognitive performance and MRI for volumetric evaluation of various brain regions. Generalised estimating equation models were used for association analysis (p < 0.05). The brain volumetric measures including total grey matter (GM), cortex, thalamus, hippocampal and fourth ventricular volumes were significantly associated with global and sectoral RNFL. RNFL thickness correlated with delayed recalls of California verbal learning test (CVLT) and Rey complex figure test (RCFT). The mfVEP amplitudes associated with cerebral white matter (WM) and cingulate GM volumes in MRI and CVLT, RCFT and trail making test outcomes. A significant association of mfVEP latency with logical memory delayed recall and thalamus volume was also observed. Our results suggested significant association of specific RNFL and mfVEP measures with distinctive brain region volumes and cognitive tests reflecting performance in memory, visuospatial and executive functional domains. These findings indicate that the mfVEP and RNFL measurements may parallel brain structural and neuropsychological measures in the older population.
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Affiliation(s)
- Ting Shen
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People’s Hospital), School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
- Corresponding authors at: Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's hospital), School of Medicine, Shanghai Jiao Tong University and Macquarie University.
| | - Samran Sheriff
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
| | - Yuyi You
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
| | - Jiyang Jiang
- Centre for Healthy Brain Ageing and the Neuropsychiatric Institute, University of New South Wales, Sydney, NSW, Australia
| | - Angela Schulz
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
| | - Heather Francis
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
| | - Mehdi Mirzaei
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
| | - Danit Saks
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
| | - Nitin Chitranshi
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
| | - Veer Gupta
- Faculty of Health, Deakin University, VIC, Australia
| | | | - Alexander Klistorner
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
| | - Wei Wen
- Centre for Healthy Brain Ageing and the Neuropsychiatric Institute, University of New South Wales, Sydney, NSW, Australia
| | - Perminder Sachdev
- Centre for Healthy Brain Ageing and the Neuropsychiatric Institute, University of New South Wales, Sydney, NSW, Australia
| | - Vivek K. Gupta
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
- Corresponding authors at: Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's hospital), School of Medicine, Shanghai Jiao Tong University and Macquarie University.
| | - Stuart L. Graham
- Macquarie Medical School, Macquarie University, Sydney, NSW, Australia
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
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Gómez-Granados A, Barany DA, Schrayer M, Kurtzer IL, Bonnet CT, Singh T. Age-related deficits in rapid visuomotor decision-making. J Neurophysiol 2021; 126:1592-1603. [PMID: 34614375 DOI: 10.1152/jn.00073.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Many goal-directed actions that require rapid visuomotor planning and perceptual decision-making are affected in older adults, causing difficulties in execution of many functional activities of daily living. Visuomotor planning and perceptual identification are mediated by the dorsal and ventral visual streams, respectively, but it is unclear how age-induced changes in sensory processing in these streams contribute to declines in visuomotor decision-making performance. Previously, we showed that in young adults, task demands influenced movement strategies during visuomotor decision-making, reflecting differential integration of sensory information between the two streams. Here, we asked the question if older adults would exhibit deficits in interactions between the two streams during demanding motor tasks. Older adults (n = 15) and young controls (n = 26) performed reaching or interception movements toward virtual objects. In some blocks of trials, participants also had to select an appropriate movement goal based on the shape of the object. Our results showed that older adults corrected fewer initial decision errors during both reaching and interception movements. During the interception decision task, older adults made more decision- and execution-related errors than young adults, which were related to early initiation of their movements. Together, these results suggest that older adults have a reduced ability to integrate new perceptual information to guide online action, which may reflect impaired ventral-dorsal stream interactions.NEW & NOTEWORTHY Older adults show declines in vision, decision-making, and motor control, which can lead to functional limitations. We used a rapid visuomotor decision task to examine how these deficits may interact to affect task performance. Compared with healthy young adults, older adults made more errors in both decision-making and motor execution, especially when the task required intercepting moving targets. This suggests that age-related declines in integrating perceptual and motor information may contribute to functional deficits.
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Affiliation(s)
| | - Deborah A Barany
- Department of Kinesiology, University of Georgia, Athens, Georgia.,Augusta University/University of Georgia Medical Partnership, Athens, Georgia
| | | | - Isaac L Kurtzer
- Department of Biomedical Science, New York Institute of Technology-College of Osteopathic Medicine, Old Westbury, New York
| | - Cédrick T Bonnet
- Univ. Lille, CNRS, UMR 9193-SCALab-Sciences Cognitives et Sciences Affectives, Lille, France
| | - Tarkeshwar Singh
- Department of Kinesiology, The Pennsylvania State University, University Park, Pennsylvania
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13
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Spatio-time-frequency joint sparse optimization with transfer learning in motor imagery-based brain-computer interface system. Biomed Signal Process Control 2021. [DOI: 10.1016/j.bspc.2021.102702] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Vision before and after scharioth macular lens implantation in patients with AMD: an electrophysiological study. Doc Ophthalmol 2021; 143:17-31. [PMID: 33392893 PMCID: PMC8266777 DOI: 10.1007/s10633-020-09814-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/11/2020] [Indexed: 11/09/2022]
Abstract
Background For patients with age-related macular degeneration (AMD), a special intraocular lens implantation partially compensates for the loss in the central part of the visual field. For six months, we evaluated changes in neurophysiological parameters in patients implanted with a “Scharioth macula lens” (SML; a center near high add + 10 D and peripheral plano carrier bifocal lens designed to be located between the iris and an artificial lens). Methods Fourteen patients (5 M, 9 F, 63–87 years) with dry AMD were examined prior to and at 3 days after, as well as 1, 2, and 6 months after, implantation using pattern-reversal, motion-onset, and cognitive evoked potentials, psychophysical tests evaluating distant and near visual acuity, and contrast sensitivity. Results Near visual acuity without an external aid was significantly better six months after implantation than before implantation (Jaeger table median (lower; upper quartile): 4 (1; 6) vs. 15 (13; 17)). Distant visual acuity was significantly altered between the pre- (0.7 (0.5; 0.8) logMAR) and last postimplantation visits (0.8 (0.7; 0.8) logMAR), which matched prolongation of the P100 peak time (147 (135; 151) ms vs. 161 (141; 166) ms) of 15 arc min pattern-reversal VEPs and N2 peak time (191.5 (186.5; 214.5) ms vs. 205 (187; 218) ms) of peripheral motion-onset VEPs. Conclusion SML implantation significantly improved near vision. We also observed a slight but significant decrease in distant and peripheral vision. The most efficient electrophysiological approach to test patients with SML was the peripheral motion-onset stimulation, which evoked repeatable and readable VEPs. Supplementary Information The online version
containssupplementary material available at (10.1007/s10633-020-09814-8).
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15
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Flasbeck V, Juckel G, Brüne M. Evidence for Altered Neural Processing in Patients With Borderline Personality Disorder. J PSYCHOPHYSIOL 2020. [DOI: 10.1027/0269-8803/a000271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract. Borderline personality disorder (BPD) is characterized by difficulties in emotion regulation, self-identity disturbances, self-injurious behavior, and reduced inhibitory control. Event-related potential (ERP) studies have sought to reveal the neural correlates of cognitive distortions and behavioral alterations in BPD. The article presents an overview of the existing ERP literature pertaining to BPD and discusses whether any one of the electrophysiological findings could serve as a reliable and specific marker for BPD. In short, ERP studies investigating P300 tentatively suggest impaired inhibitory control. Moreover, reduced error- and feedback-related processing and impaired response inhibition seem to be associated with impulsivity and risk-taking behavior in BPD patients. However, these findings are not specific for BPD. Regarding emotional and self-referential information processing, individuals with BPD display heightened vigilance toward social threat impacting their cognitive performance in various social-cognitive tasks demonstrating alterations of early negative and late positive potentials. These multifaceted electrophysiological alterations may be attributed to dysfunctional activity and connectivity of frontal brain regions and the limbic system.
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Affiliation(s)
- Vera Flasbeck
- LWL University Hospital, Department of Psychiatry, Psychotherapy and Preventive Medicine, Division of Social Neuropsychiatry and Evolutionary Medicine, Ruhr University Bochum, Germany
| | - Georg Juckel
- LWL University Hospital, Department of Psychiatry, Psychotherapy and Preventive Medicine, Ruhr University Bochum, Germany
| | - Martin Brüne
- LWL University Hospital, Department of Psychiatry, Psychotherapy and Preventive Medicine, Division of Social Neuropsychiatry and Evolutionary Medicine, Ruhr University Bochum, Germany
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16
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Liu J, Zhang C, Zhu Y, Liu Y, Sun H, Ristaniemi T, Cong F, Parviainen T. Dissociable Effects of Reward on P300 and EEG Spectra Under Conditions of High vs. Low Vigilance During a Selective Visual Attention Task. Front Hum Neurosci 2020; 14:207. [PMID: 32670036 PMCID: PMC7327118 DOI: 10.3389/fnhum.2020.00207] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 05/07/2020] [Indexed: 01/08/2023] Open
Abstract
The influence of motivation on selective visual attention in states of high vs. low vigilance is poorly understood. To explore the possible differences in the influence of motivation on behavioral performance and neural activity in high and low vigilance levels, we conducted a prolonged 2 h 20 min flanker task and provided monetary rewards during the 20- to 40- and 100- to 120-min intervals of task performance. Both the behavioral and electrophysiological measures were modulated by prolonged task engagement. Moreover, the effect of reward was different in high vs. low vigilance states. The monetary reward increased accuracy and decreased the reaction time (RT) and number of omitted responses in the low but not in the high vigilance state. The fatigue-related decrease in P300 amplitude recovered to its level in the high vigilance state by manipulating motivation, whereas the fatigue-related increase in P300 latency was not modulated by reward. Additionally, the fatigue-related increase in event-related spectral power at 1-4 Hz was sensitive to vigilance decrement and reward. However, the spectral power at 4-8 Hz was only affected by the decrease in vigilance. These electrophysiological measures were not influenced by motivation in the state of high vigilance. Our results suggest that neural processing capacity, but not the timing of processing, is sensitive to motivation. These findings also imply that the fatigue-related impairments in behavioral performance and neural activity underlying selective visual attention only partly recover after manipulating motivation. Furthermore, our results provide evidence for the dissociable neural mechanisms underlying the fatigue-related decrease vs. reward-related increase in attentional resources.
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Affiliation(s)
- Jia Liu
- School of Biomedical Engineering, Dalian University of Technology, Dalian, China
- Faculty of Information Technology, University of Jyväskylä, Jyväskylä, Finland
| | - Chi Zhang
- School of Biomedical Engineering, Dalian University of Technology, Dalian, China
| | - Yongjie Zhu
- School of Biomedical Engineering, Dalian University of Technology, Dalian, China
- Faculty of Information Technology, University of Jyväskylä, Jyväskylä, Finland
| | - Yunmeng Liu
- School of Biomedical Engineering, Dalian University of Technology, Dalian, China
| | - Hongjin Sun
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada
| | - Tapani Ristaniemi
- Faculty of Information Technology, University of Jyväskylä, Jyväskylä, Finland
| | - Fengyu Cong
- School of Biomedical Engineering, Dalian University of Technology, Dalian, China
- Faculty of Information Technology, University of Jyväskylä, Jyväskylä, Finland
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, China
- Key Laboratory of Integrated Circuit and Biomedical Electronic System, Dalian University of Technology, Dalian, China
| | - Tiina Parviainen
- Centre for Interdisciplinary Brain Research, Department of Psychology, Faculty of Education and Psychology, University of Jyvaskyla, Jyvaskyla, Finland
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17
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Zheng M, Yang B, Xie Y. EEG classification across sessions and across subjects through transfer learning in motor imagery-based brain-machine interface system. Med Biol Eng Comput 2020; 58:1515-1528. [PMID: 32394192 DOI: 10.1007/s11517-020-02176-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 04/01/2020] [Indexed: 11/25/2022]
Abstract
Transfer learning enables the adaption of models to handle mismatches of distributions across sessions or across subjects. In this paper, we proposed a new transfer learning algorithm to classify motor imagery EEG data. By analyzing the power spectrum of EEG data related to motor imagery, the shared features across sessions or across subjects, namely, the mean and variance of model parameters, are extracted. Then, select the data sets that were most relevant to the new data set according to Euclidean distance to update the shared features. Finally, utilize the shared features and subject/session-specific features jointly to generate a new model. We evaluated our algorithm by analyzing the motor imagery EEG data from 10 healthy participants and a public data set from BCI competition IV. The classification accuracy of the proposed transfer learning is higher than that of traditional machine learning algorithms. The results of the paired t test showed that the classification results of PSD and the transfer learning algorithm were significantly different (p = 2.0946e-9), and the classification results of CSP and the transfer learning algorithm were significantly different (p = 1.9122e-6). The test accuracy of data set 2a of BCI competition IV was 85.7% ± 5.4%, which was higher than that of related traditional machine learning algorithms. Preliminary results suggested that the proposed algorithm can be effectively applied to the classification of motor imagery EEG signals across sessions and across subjects and the performance is better than that of the traditional machine learning algorithms. It can be promising to be applied to the field of brain-computer interface (BCI). Graphical abstract.
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Affiliation(s)
- Minmin Zheng
- School of Mechatronic Engineering and Automation, Research Center of Brain Computer Engineering, Shanghai University, Shanghai, 200444, China.,School of Mechanical and Electrical Engineering, Putian University, Putian, Fujian, China
| | - Banghua Yang
- School of Mechatronic Engineering and Automation, Research Center of Brain Computer Engineering, Shanghai University, Shanghai, 200444, China.
| | - Yunlong Xie
- School of Mechatronic Engineering and Automation, Research Center of Brain Computer Engineering, Shanghai University, Shanghai, 200444, China
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18
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Visual evoked and event-related brain potentials in HIV-infected adults: a longitudinal study over 2.5 years. Doc Ophthalmol 2019; 139:83-97. [PMID: 30993574 DOI: 10.1007/s10633-019-09697-4] [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: 10/18/2018] [Accepted: 04/09/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE The aim of this neurophysiological study was to monitor changes in the visual and cognitive function of HIV-infected patients treated with combination antiretroviral therapy. METHODS Eleven adult Czech HIV+ patients, with a mean age of 35 years and CD4 cell count ≥ 230 × 106 cells/L of blood at the time of enrollment, underwent four to six examinations over the course of 2.5 years to evaluate pattern-reversal and motion-onset visual evoked potentials (P-VEPs and M-VEPs), visually driven oddball event-related potentials (ERPs) and Montreal Cognitive Assessments. In addition to evaluating the intraindividual change in the observed parameters, we also compared patient data to data from eleven age- and gender-matched controls. RESULTS We did not find any significant differences in P-VEPs between the patients and controls or in the paired comparison of the first and last visit. The only significant finding for P-VEPs was a linear trend in prolongation of the 20' P-VEP P100 peak time. In M-VEPs, we found a significant intergroup difference in the N160 peak time recorded during the first visit for peripheral M-VEPs only. During the last visit, all N160 peak times for patients differed significantly from those of the control group. The only intervisit difference close to the level of significance was for peripheral M-VEPs, which confirmed the trend analysis. No significant differences between patients and controls were found in the ERPs, but the P300 peak time showed a significant difference between the first and last visits, as confirmed by the trend. Patient reaction time was not significantly delayed at the first visit; however, it was prolonged with time, as confirmed by the trend. CONCLUSION Our aim was to evaluate whether antiretroviral treatment in HIV+ patients is sufficient to preserve brain visual function. The optic nerve and primary visual cortex function tested by the P-VEPs seem to be preserved. The prolongation of the M-VEPs suggests an individually detectable decline in CNS function, but these changes did not show a progression during the follow-up. From a longitudinal perspective, the trends in peak time prolongation of the 20' P-VEP, peripheral M-VEP, ERP and reaction time suggest a faster decline than that caused by aging in healthy populations, as previously described in a cross-sectional study.
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19
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Affiliation(s)
- Jutta Billino
- Abteilung Allgemeine Psychologie, Justus-Liebig-Universität Gießen, Gießen, Germany
| | - Karin S. Pilz
- Faculty of Behavioural and Social Sciences, University of Groningen, Groningen, The Netherlands
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20
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Ward LM, Morison G, Simmers AJ, Shahani U. Age-Related Changes in Global Motion Coherence: Conflicting Haemodynamic and Perceptual Responses. Sci Rep 2018; 8:10013. [PMID: 29968729 PMCID: PMC6030110 DOI: 10.1038/s41598-018-27803-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 06/08/2018] [Indexed: 11/22/2022] Open
Abstract
Our aim was to use both behavioural and neuroimaging data to identify indicators of perceptual decline in motion processing. We employed a global motion coherence task and functional Near Infrared Spectroscopy (fNIRS). Healthy adults (n = 72, 18-85) were recruited into the following groups: young (n = 28, mean age = 28), middle-aged (n = 22, mean age = 50), and older adults (n = 23, mean age = 70). Participants were assessed on their motion coherence thresholds at 3 different speeds using a psychophysical design. As expected, we report age group differences in motion processing as demonstrated by higher motion coherence thresholds in older adults. Crucially, we add correlational data showing that global motion perception declines linearly as a function of age. The associated fNIRS recordings provide a clear physiological correlate of global motion perception. The crux of this study lies in the robust linear correlation between age and haemodynamic response for both measures of oxygenation. We hypothesise that there is an increase in neural recruitment, necessitating an increase in metabolic need and blood flow, which presents as a higher oxygenated haemoglobin response. We report age-related changes in motion perception with poorer behavioural performance (high motion coherence thresholds) associated with an increased haemodynamic response.
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Affiliation(s)
- Laura McKernan Ward
- Department of Vision Science, Glasgow Caledonian University, 70 Cowcaddens Road, Glasgow, G4 0BA, United Kingdom.
| | - Gordon Morison
- Department of Engineering, Glasgow Caledonian University, 70 Cowcaddens Road, Glasgow, G4 0BA, United Kingdom
| | - Anita Jane Simmers
- Department of Vision Science, Glasgow Caledonian University, 70 Cowcaddens Road, Glasgow, G4 0BA, United Kingdom
| | - Uma Shahani
- Department of Vision Science, Glasgow Caledonian University, 70 Cowcaddens Road, Glasgow, G4 0BA, United Kingdom
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21
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Pavarini SCI, Brigola AG, Luchesi BM, Souza ÉN, Rossetti ES, Fraga FJ, Guarisco LPC, Terassi M, Oliveira NA, Hortense P, Pedroso RV, Ottaviani AC. On the use of the P300 as a tool for cognitive processing assessment in healthy aging: A review. Dement Neuropsychol 2018; 12:1-11. [PMID: 29682227 PMCID: PMC5901243 DOI: 10.1590/1980-57642018dn12-010001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Changes in patterns of performance for the cognitive functions of memory, processing speed, and focused attention are expected in old age.
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Affiliation(s)
- Sofia Cristina Iost Pavarini
- MS, Federal University of São Carlos (UFSCar), Graduate Program in Nursing, São Carlos, SP, Brazil.,PhD, Federal University of São Carlos (UFSCar), Graduate Program in Gerontology, São Carlos, SP, Brazil.,PhD, Federal University of São Carlos (UFSCar), Gerontology Department, São Carlos, SP, Brazil
| | - Allan Gustavo Brigola
- MS, Federal University of São Carlos (UFSCar), Graduate Program in Nursing, São Carlos, SP, Brazil
| | - Bruna Moretti Luchesi
- MS, Federal University of São Carlos (UFSCar), Graduate Program in Nursing, São Carlos, SP, Brazil
| | - Érica Nestor Souza
- MS, Federal University of São Carlos (UFSCar), Graduate Program in Nursing, São Carlos, SP, Brazil
| | | | - Francisco José Fraga
- PhD, Federal University of ABC (UFABC), Engineering, Modeling and Applied Social Sciences Center (CECS), Santo André, SP, Brazil
| | | | - Marélli Terassi
- MS, Federal University of São Carlos (UFSCar), Graduate Program in Nursing, São Carlos, SP, Brazil
| | - Nathalia Alves Oliveira
- MS, Federal University of São Carlos (UFSCar), Graduate Program in Nursing, São Carlos, SP, Brazil
| | - Priscilla Hortense
- MS, Federal University of São Carlos (UFSCar), Graduate Program in Nursing, São Carlos, SP, Brazil
| | - Renata Valle Pedroso
- PhD, São Paulo State University (UNESP), Physical Activity and Aging Lab, Rio Claro, SP, Brazil
| | - Ana Carolina Ottaviani
- MS, Federal University of São Carlos (UFSCar), Graduate Program in Nursing, São Carlos, SP, Brazil
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22
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Pelak VS, Hills W. Vision in Alzheimer's disease: a focus on the anterior afferent pathway. Neurodegener Dis Manag 2018; 8:49-67. [PMID: 29359625 DOI: 10.2217/nmt-2017-0030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Visual dysfunction has long been recognized as a manifestation of Alzheimer's disease (AD), particularly in the form of visuospatial impairment during all stages of disease. However, investigations have revealed findings within the anterior (i.e., pregeniculate) afferent visual pathways that rely on retinal imaging and electrophysiologic methodologies for detection. Here we focus on the anterior afferent visual pathways in AD and the measures used for assessment, including optical coherence tomography, electrophysiology, color vision testing and threshold visual field perimetry. A brief summary of higher order visual dysfunction is also included to allow the reader to keep in context the broader findings of afferent visual dysfunction in AD.
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Affiliation(s)
- Victoria S Pelak
- Departments of Neurology & Ophthalmology, The Rocky Mountain Lions Eye Institute, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - William Hills
- Departments of Ophthalmology & Neurology, Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
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23
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Mikulskaya E, Martin F. Visual attention to motion stimuli and its neural correlates in cannabis users. Eur J Neurosci 2017; 47:269-276. [PMID: 29266467 DOI: 10.1111/ejn.13810] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 11/21/2017] [Accepted: 12/07/2017] [Indexed: 11/28/2022]
Abstract
Attention to motion stimuli and correct motion perception are vital for road safety. Although cannabis use has been associated with increased road crash risks, there is limited research on attentional processing of moving stimuli in cannabis users. This study investigated the neural correlates of the three-stimulus oddball task in cannabis users (n = 18) and non-users (n = 23) in response to moving stimuli. Stimulus contrast was under 16% against a low luminance background (M luminance < 16 cd/m2 ). The two groups did not differ in accuracy or in N2 peak amplitude; however, N2 latency was longer for target and standard stimuli in the cannabis group than in the control group. The cannabis group also showed a significantly reduced P3b amplitude in response to target stimuli. The AUDIT score was added as a random factor to the anova to rule out the effects of uneven alcohol consumption in the two groups. A significant group effect was found for N2 latency in response to target and standard stimuli and a significant interaction between the group, and the AUDIT score was found for the P3b peak amplitude for the distractor and standard stimuli, but not for the target stimuli. The results of this study suggest that cannabis use relates to reduced neural activity underlying attention to motion stimuli. Implications for regular early-onset cannabis use road safety are discussed.
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Affiliation(s)
- Elena Mikulskaya
- School of Psychology, University of Newcastle, Newcastle, NSW, Australia.,Tula University, TIEI, Tula, Russian
| | - Frances Martin
- School of Psychology, University of Newcastle, Newcastle, NSW, Australia
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24
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van Heck CH, Driessen JMA, Amato M, van den Berg MN, Bhandari P, Bilbao-Broch L, Farres-Casals J, Hendriks M, Jodzio AC, Luque-Ballesteros L, Schöchl C, Velasco-Angeles LR, Weijer RHA, van Rijn CM, Jongsma MLA. Pain Processing in a Social Context and the Link with Psychopathic Personality Traits-An Event-Related Potential Study. Front Behav Neurosci 2017; 11:180. [PMID: 28993727 PMCID: PMC5622147 DOI: 10.3389/fnbeh.2017.00180] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 09/11/2017] [Indexed: 12/30/2022] Open
Abstract
Empathy describes the ability to understand another person's feelings. Psychopathy is a disorder that is characterized by a lack of empathy. Therefore, empathy and psychopathy are interesting traits to investigate with respect to experiencing and observing pain. The present study aimed to investigate pain empathy and pain sensitivity by measuring event-related potentials (ERPs) extracted from the ongoing EEG in an interactive setup. Each participant fulfilled subsequently the role of "villain" and "victim". In addition, mode of control was modulated resulting in four different conditions; passive villain, active villain, active victim and passive victim. Response-, visual- and pain ERPs were compared between the four conditions. Furthermore, the role of psychopathic traits in these outcomes was investigated. Our findings suggested that people experience more conflict when hurting someone else than hurting themselves. Furthermore, our results indicated that self-controlled pain was experienced as more painful than uncontrolled pain. People that scored high on psychopathic traits seemed to process and experience pain differently. According to the results of the current study, social context, attention and personality traits seem to modulate pain processing and the empathic response to pain in self and others. The within-subject experimental design described here provides an excellent approach to further unravel the influence of social context and personality traits on social cognition.
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Affiliation(s)
- Casper H van Heck
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Josi M A Driessen
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands.,Radboud University Medical Centre, Cognitive NeuroscienceNijmegen, Netherlands
| | - Maria Amato
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Marnou N van den Berg
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Pritha Bhandari
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Laura Bilbao-Broch
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Jordi Farres-Casals
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Manon Hendriks
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Adrian C Jodzio
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Laura Luque-Ballesteros
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Christina Schöchl
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Laura R Velasco-Angeles
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Roel H A Weijer
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
| | - Clementina M van Rijn
- Donders Institute for Brain, Cognition, and Behavior, Donders Center for Cognition, Radboud University NijmegenNijmegen, Netherlands
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25
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Learmonth G, Benwell CS, Thut G, Harvey M. Age-related reduction of hemispheric lateralisation for spatial attention: An EEG study. Neuroimage 2017; 153:139-151. [DOI: 10.1016/j.neuroimage.2017.03.050] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 03/16/2017] [Accepted: 03/19/2017] [Indexed: 11/25/2022] Open
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26
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Gender-based normative values for pattern-reversal and flash visually evoked potentials under binocular and monocular stimulation in healthy adults. Doc Ophthalmol 2017; 135:53-67. [PMID: 28560498 DOI: 10.1007/s10633-017-9594-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 05/25/2017] [Indexed: 12/30/2022]
Abstract
PURPOSE To determine gender-based normative values for pattern-reversal (PR) and flash (F) visually evoked potentials (VEP) under binocular and monocular stimulation in healthy adults. METHODS Healthy adults (age ≥18 years) were recruited among university employees and students. Inclusion criteria were absence of abnormalities in fundoscopy, tracking ability, stereopsis and pupillary reflexes; best-corrected visual acuity ≤.00 logMAR; and refractive error (spherical equivalent) from -6.00 to +6.00. Exclusion criteria were previous intraocular surgery, systemic and/or neurological disorders. Binocular and monocular tests were performed according to International Society for Clinical Electrophysiology of Vision standards for PRVEP (reversal rate = 1.9 Hz, checkerboard stimuli 15' and 60' at 100% contrast) and FVEP (3 cd s/m2, rate = 1 Hz). VEP parameters of amplitude (µV) and peak times (ms) were measured. Inter-ocular differences, inter-peak intervals (N135-N75) and binocular summation were determined. RESULTS Fifty-four subjects (28 females; mean age = 40.4 ± 13.7 years; median = 40.0 years) were included. Mean P100 latencies for 15' and 60' stimuli were, respectively, 94.6 ± 4.7 ms and 96.1 ± 4.2 for women. Mean values of P100 latency for men were 97.4 ± 4.9 for 15' and 97.7 ± 4.2 for 60' stimuli. Larger mean P100 for 15' checks was observed in women (12.8 ± 5.7 µV) than men (8.6 ± 2.5 µV) in PRVEP. Similar results were found for FVEP N2-P2 amplitudes (mean = 14.6 ± 4.9 for women and 9.8 ± 4.0 for men). CONCLUSIONS Gender-based normative values for PRVEP and FVEP were determined, with women disclosing higher responses than men for smaller stimuli in the visual pathway. The use of gender-based normative values in the analysis of clinical VEP data for diagnostic and therapeutic purposes is recommendable. Additional analysis including inter-peak intervals and binocular summation ratio might improve the diagnostic power of VEP.
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Porter G, Wattam-Bell J, Bayer A, Haworth J, Braddick O, Atkinson J, Tales A. Different trajectories of decline for global form and global motion processing in aging, mild cognitive impairment and Alzheimer's disease. Neurobiol Aging 2017; 56:17-24. [PMID: 28482210 DOI: 10.1016/j.neurobiolaging.2017.03.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 02/06/2017] [Accepted: 03/05/2017] [Indexed: 12/23/2022]
Abstract
The visual processing of complex motion is impaired in Alzheimer's disease (AD). However, it is unclear whether these impairments are biased toward the motion stream or part of a general disruption of global visual processing, given some reports of impaired static form processing in AD. Here, for the first time, we directly compared the relative preservation of motion and form systems in AD, mild cognitive impairment, and healthy aging, by measuring coherence thresholds for well-established global rotational motion and static form stimuli known to be of equivalent complexity. Our data confirm a marked motion-processing deficit specific to some AD patients, and greater than any form-processing deficit for this group. In parallel, we identified a more gradual decline in static form recognition, with thresholds raised in mild cognitive impairment patients and slightly further in the AD group compared with controls. We conclude that complex motion processing is more vulnerable to decline in dementia than complex form processing, perhaps owing to greater reliance on long-range neural connections heavily targeted by AD pathology.
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Affiliation(s)
- Gillian Porter
- School of Psychology, University of Bristol, Bristol, UK.
| | - John Wattam-Bell
- Division of Psychology and Language Sciences, Faculty of Brain Sciences, University College London, London, UK
| | - Antony Bayer
- Department of Geriatric Medicine, Cardiff University, Cardiff, UK
| | - Judy Haworth
- South Glos Memory Services, Avon and Wiltshire Mental Health Partnership, Bristol, UK
| | - Oliver Braddick
- Department of Experimental Psychology, University of Oxford, Oxford, UK
| | - Janette Atkinson
- Division of Psychology and Language Sciences, Faculty of Brain Sciences, University College London, London, UK
| | - Andrea Tales
- School of Psychology, University of Bristol, Bristol, UK; Department of Psychology, University of Swansea, Swansea, UK
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Szanyi J, Kremlacek J, Kubova Z, Kuba M, Gebousky P, Kapla J, Szanyi J, Vit F, Langrova J. Pattern- and motion-related visual evoked potentials in HIV-infected adults. Doc Ophthalmol 2017; 134:45-55. [PMID: 28074347 DOI: 10.1007/s10633-016-9570-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 12/28/2016] [Indexed: 02/03/2023]
Abstract
PURPOSE The goal of the current study was to explore visual function in virally suppressed HIV patients undergoing combined antiretroviral therapy (cART) by using pattern-reversal and motion-onset visual evoked potentials (VEPs). METHODS The pattern-reversal and motion-onset VEPs were recorded in 20 adult HIV+ patients with a mean age of 38 years and CD4 cell counts ≥230 × 106 cells/L of blood. RESULTS Nine out of 20 patients displayed VEP abnormalities. Pattern-reversal VEPs pathology was observed in 20% of subjects, and 45% HIV patients had impaired motion-onset VEPs. Five out of 16 neurologically asymptomatic HIV patients had prolonged motion-onset VEP latencies in both eyes. Four neurologically symptomatic patients displayed simultaneously abnormal motion-onset and pattern-reversal VEP latencies: monocular involvement was observed in two patients with Lyme and cytomegalovirus unilateral optic neuritis. Binocular involvement was noted in two patients with cognitive deficits. Correlation analysis between disease duration, CD4 cell count, HIV copies in plasma, MoCA and electrophysiological parameters did not show any significant relationships. CONCLUSIONS The functional changes of the visual system in neurologically asymptomatic virally suppressed HIV patients displayed higher motion-onset VEP sensitivity than in standard pattern-reversal VEP examinations. This promising marker, however, has no significant association with clinical conditions. Further exploration is warranted.
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Affiliation(s)
- Jana Szanyi
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic.
| | - Jan Kremlacek
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Zuzana Kubova
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Miroslav Kuba
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Pavel Gebousky
- Department of Infectious Diseases, Faculty Hospital in Hradec Kralove, Hradec Kralove, Czech Republic
| | - Jaroslav Kapla
- Department of Infectious Diseases, Faculty Hospital in Hradec Kralove, Hradec Kralove, Czech Republic
| | - Juraj Szanyi
- Department of Infectious Diseases, Faculty Hospital in Hradec Kralove, Hradec Kralove, Czech Republic.,Department of Epidemiology, Faculty of Military Health Sciences, University of Defence in Hradec Kralove, Hradec Kralove, Czech Republic
| | - Frantisek Vit
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
| | - Jana Langrova
- Department of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870, 500 03, Hradec Kralove, Czech Republic
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Brief Report: Early VEPs to Pattern-Reversal in Adolescents and Adults with Autism. J Autism Dev Disord 2016; 46:3377-86. [DOI: 10.1007/s10803-016-2880-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Kremláček J, Kreegipuu K, Tales A, Astikainen P, Põldver N, Näätänen R, Stefanics G. Visual mismatch negativity (vMMN): A review and meta-analysis of studies in psychiatric and neurological disorders. Cortex 2016; 80:76-112. [DOI: 10.1016/j.cortex.2016.03.017] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 01/31/2016] [Accepted: 03/17/2016] [Indexed: 12/18/2022]
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Costa M, Piché M, Lepore F, Guillemot JP. Age-related audiovisual interactions in the superior colliculus of the rat. Neuroscience 2016; 320:19-29. [DOI: 10.1016/j.neuroscience.2016.01.058] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 01/27/2016] [Accepted: 01/27/2016] [Indexed: 11/29/2022]
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Geronimo A, Simmons Z, Schiff SJ. Performance predictors of brain–computer interfaces in patients with amyotrophic lateral sclerosis. J Neural Eng 2016; 13:026002. [DOI: 10.1088/1741-2560/13/2/026002] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Csete G, Bognár A, Csibri P, Kaposvári P, Sáry G. Aging alters visual processing of objects and shapes in inferotemporal cortex in monkeys. Brain Res Bull 2014; 110:76-83. [PMID: 25526896 DOI: 10.1016/j.brainresbull.2014.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 11/21/2014] [Accepted: 11/22/2014] [Indexed: 12/14/2022]
Abstract
Visual perception declines with age. Perceptual deficits may originate not only in the optical system serving vision but also in the neural machinery processing visual information. Since homologies between monkey and human vision permit extrapolation from monkeys to humans, data from young, middle aged and old monkeys were analyzed to show age-related changes in the neuronal activity in the inferotemporal cortex, which is critical for object and shape vision. We found an increased neuronal response latency, and a decrease in the stimulus selectivity in the older animals and suggest that these changes may underlie the perceptual uncertainties found frequently in the elderly.
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Affiliation(s)
- G Csete
- Department of Physiology, Faculty of Medicine, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary; Department of Neurology, Faculty of Medicine, Semmelweis u. 6, H-6725 Szeged, Hungary.
| | - A Bognár
- Department of Physiology, Faculty of Medicine, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary.
| | - P Csibri
- Department of Physiology, Faculty of Medicine, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary.
| | - P Kaposvári
- Department of Physiology, Faculty of Medicine, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary.
| | - Gy Sáry
- Department of Physiology, Faculty of Medicine, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary.
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Lack of visual evoked potentials amplitude decrement during prolonged reversal and motion stimulation in migraineurs. Clin Neurophysiol 2014; 125:1223-30. [DOI: 10.1016/j.clinph.2013.10.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 10/11/2013] [Accepted: 10/30/2013] [Indexed: 01/09/2023]
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Kubova Z, Kuba M, Kremlacek J, Langrova J, Szanyi J, Vit F, Chutna M. Difficulties of motion-onset VEP interpretation in school-age children. Doc Ophthalmol 2014; 128:121-9. [DOI: 10.1007/s10633-014-9429-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 02/12/2014] [Indexed: 11/28/2022]
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P300 development across the lifespan: a systematic review and meta-analysis. PLoS One 2014; 9:e87347. [PMID: 24551055 PMCID: PMC3923761 DOI: 10.1371/journal.pone.0087347] [Citation(s) in RCA: 264] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 12/19/2013] [Indexed: 12/24/2022] Open
Abstract
Background The P300 component of the event-related potential is a large positive waveform that can be extracted from the ongoing electroencephalogram using a two-stimuli oddball paradigm, and has been associated with cognitive information processing (e.g. memory, attention, executive function). This paper reviews the development of the auditory P300 across the lifespan. Methodology/Principal Findings A systematic review and meta-analysis on the P300 was performed including 75 studies (n = 2,811). Scopus was searched for studies using healthy subjects and that reported means of P300 latency and amplitude measured at Pz and mean age. These findings were validated in an independent, existing cross-sectional dataset including 1,572 participants from ages 6–87. Curve-fitting procedures were applied to obtain a model of P300 development across the lifespan. In both studies logarithmic Gaussian models fitted the latency and amplitude data best. The P300 latency and amplitude follow a maturational path from childhood to adolescence, resulting in a period that marks a plateau, after which degenerative effects begin. We were able to determine ages that mark a maximum (in P300 amplitude) or trough (in P300 latency) segregating maturational from degenerative stages. We found these points of deflection occurred at different ages. Conclusions/Significance It is hypothesized that latency and amplitude index different aspects of brain maturation. The P300 latency possibly indexes neural speed or brain efficiency. The P300 amplitude might index neural power or cognitive resources, which increase with maturation.
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Decorps J, Saumet JL, Sommer P, Sigaudo-Roussel D, Fromy B. Effect of ageing on tactile transduction processes. Ageing Res Rev 2014; 13:90-9. [PMID: 24373814 DOI: 10.1016/j.arr.2013.12.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 12/02/2013] [Accepted: 12/16/2013] [Indexed: 01/09/2023]
Abstract
With advancing age, a decline in the main sensory modalities including touch sensation and perception is well reported to occur. This review mainly outlines the peripheral components of touch perception highlighting ageing influences on morphological and functional features of cutaneous mechanical transducers and mechanosensitive ion channels, sensory innervation, neurotransmitters and even vascular system required to ensure efferent function of the afferent nerve fibres in the skin. This, in conjunction with effect of ageing on the skin per se and central nervous system, could explain the tactile deficit seen among the ageing population. We also discuss appropriate tools and experimental models available to study the age-related tactile decline.
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Affiliation(s)
- Johanna Decorps
- Laboratory of Tissue Biology and Therapeutic Engineering, Centre National de la Recherche Scientifique (CNRS) UMR 5305, Lyon, France; University of Lyon 1, UMR 5305, Lyon, France.
| | - Jean Louis Saumet
- Laboratory of Tissue Biology and Therapeutic Engineering, Centre National de la Recherche Scientifique (CNRS) UMR 5305, Lyon, France; University of Lyon 1, UMR 5305, Lyon, France.
| | - Pascal Sommer
- Laboratory of Tissue Biology and Therapeutic Engineering, Centre National de la Recherche Scientifique (CNRS) UMR 5305, Lyon, France; University of Lyon 1, UMR 5305, Lyon, France.
| | - Dominique Sigaudo-Roussel
- Laboratory of Tissue Biology and Therapeutic Engineering, Centre National de la Recherche Scientifique (CNRS) UMR 5305, Lyon, France; University of Lyon 1, UMR 5305, Lyon, France.
| | - Berengere Fromy
- Laboratory of Tissue Biology and Therapeutic Engineering, Centre National de la Recherche Scientifique (CNRS) UMR 5305, Lyon, France; University of Lyon 1, UMR 5305, Lyon, France.
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Kremláček J, Kuba M, Kubová Z, Langrová J, Szanyi J, Vít F, Bednář M. Visual mismatch negativity in the dorsal stream is independent of concurrent visual task difficulty. Front Hum Neurosci 2013; 7:411. [PMID: 23908621 PMCID: PMC3726860 DOI: 10.3389/fnhum.2013.00411] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 07/11/2013] [Indexed: 11/13/2022] Open
Abstract
The manipulation of attention can produce mismatch negativity-like components that are not necessarily connected to the unintentional sensory registration of the violation of probability-based regularity. For clinical purposes, attentional bias should be quantified because it can vary substantially among subjects and can decrease the specificity of the examination. This experiment targets the role of attention in the generation of visual mismatch negativity (vMMN). The visual regularity was generated by a sequence of two radial motions while subjects focused on visual tasks in the central part of the display. Attentional load was systematically varied and had three levels, no-load, easy, and difficult. Rare, deviant, and frequent standard motions were presented with a 10/60 ratio in oddball sequences. Data from 12 subjects was recorded from 64 channels and processed. vMMN was identified within the interval of 142-198 ms. The mean amplitude was evaluated during the aforementioned interval in the parietal and fronto-central regions. A general linear model for repeated measures was applied to the mean amplitude with a three-factor design and showed a significant difference [F (1, 11) = 17.40, p = 0.002] between standard and deviant stimuli and between regions [F (1, 11) = 8.40, p = 0.01]; however, no significant effect of the task [F (2, 22) = 1.26, p = 0.30] was observed. The unintentional detection of irregularity during the processing of the visual motion was independent of the attentional load associated with handling the central visual task. The experiment did not demonstrate an effect of attentional load manipulation on mismatch negativity (MMN) induced by the motion-sequence, which supports the clinical utility of this examination. However, used stimulation paradigm should be further optimized to generate mismatch negativity that is stable enough to be usable not only for group comparisons but also for a single subject assessment.
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Affiliation(s)
- Jan Kremláček
- Department of Pathological Physiology, Faculty of Medicine, Charles University in PragueHradec Králové, Czech Republic
| | - Miroslav Kuba
- Department of Pathological Physiology, Faculty of Medicine, Charles University in PragueHradec Králové, Czech Republic
| | - Zuzana Kubová
- Department of Pathological Physiology, Faculty of Medicine, Charles University in PragueHradec Králové, Czech Republic
| | - Jana Langrová
- Department of Pathological Physiology, Faculty of Medicine, Charles University in PragueHradec Králové, Czech Republic
| | - Jana Szanyi
- Department of Pathological Physiology, Faculty of Medicine, Charles University in PragueHradec Králové, Czech Republic
| | - František Vít
- Department of Pathological Physiology, Faculty of Medicine, Charles University in PragueHradec Králové, Czech Republic
| | - Michal Bednář
- Department of Rehabilitation, Faculty of Medicine, Charles University in PragueHradec Králové, Czech Republic
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Kavcic V, Martin T, Zalar B. Aging effects on visual evoked potentials (VEPs) for motion direction discrimination. Int J Psychophysiol 2013; 89:78-87. [PMID: 23721981 DOI: 10.1016/j.ijpsycho.2013.05.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 05/08/2013] [Accepted: 05/17/2013] [Indexed: 11/30/2022]
Abstract
Age-related declines in motion perception have been well documented. We investigated the impact of age on electrophysiological correlates of motion perception, namely the P1 and N2 components of motion onset visual evoked potentials (MO-VEPs). Additionally, we used a model of response times based on the diffusion model to pinpoint the cognitive processes affected by aging. Twelve healthy adults (age <55 years) and 19 elderly (age >55 years) performed a motion direction discrimination task during EEG recording. Behaviorally, younger and older participants had similar, high accuracy rates--98% correct, but older adults exhibited 85 ms longer response times. Fitting behavioral results with a diffusion model revealed differences between young adults and elderly in non-decision time, which we argue reflects an early perceptual stage. Electrophysiologically, aging effects were present at MO-VEPs P1 and N2 components at the posterior sites. For the P1 component, older as compared to younger adults showed greater topographical voltage distribution. For the N2 component of elderly as compared to young adults we found delayed onsets and diminished amplitudes. We did not find any significant correlations between behavioral and MO-VEP measures. However, regression analysis showed that N2 amplitude and latency were significant age predictors. Overall, our results indicate that in motion perception, age-related changes occur in early stages of visual processing, most likely in striate and extrastriate visual cortices.
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Affiliation(s)
- Voyko Kavcic
- Institute of Gerontology, Wayne State University, Detroit, MI, USA.
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Sex differences in visual evoked potentials in school-age children: What is the evidence beyond the checkerboard? Int J Psychophysiol 2013; 88:136-42. [DOI: 10.1016/j.ijpsycho.2013.03.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Revised: 02/27/2013] [Accepted: 03/01/2013] [Indexed: 11/17/2022]
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Spared cognitive processing of visual oddballs despite delayed visual evoked potentials in patient with partial recovery of vision after 53years of blindness. Vision Res 2013; 81:1-5. [DOI: 10.1016/j.visres.2012.12.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 11/29/2012] [Accepted: 12/08/2012] [Indexed: 11/17/2022]
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