Retest Reliability of Individual P3 Topography Assessed by High Density Electroencephalography

Vázquez‐Marrufo, Manuel; González-Rosa, Javier J.; Galvao-Carmona, Alejandro; Hidalgo‐Muñoz, Antonio R.; Borges, Marcos R. S.; Peña, Juan Luis Ruiz; Izquierdo, Guillermo

doi:10.1371/journal.pone.0062523

Cited by 17 publications

(34 citation statements)

References 33 publications

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“…However, additional recording sites [9], [10], [68], designs [41], [43], [44], [69], [70] and classifiers [14], [71] have been reported to influence performances achieved with those systems. Thus different results could be obtained using different electrode sites, stimulation design and/or signal processing/classification techniques.…”

Section: Discussionmentioning

confidence: 99%

A Comparison of Two Spelling Brain-Computer Interfaces Based on Visual P3 and SSVEP in Locked-In Syndrome

et al. 2013

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ObjectivesWe study the applicability of a visual P3-based and a Steady State Visually Evoked Potentials (SSVEP)-based Brain-Computer Interfaces (BCIs) for mental text spelling on a cohort of patients with incomplete Locked-In Syndrome (LIS).MethodsSeven patients performed repeated sessions with each BCI. We assessed BCI performance, mental workload and overall satisfaction for both systems. We also investigated the effect of the quality of life and level of motor impairment on the performance.ResultsAll seven patients were able to achieve an accuracy of 70% or more with the SSVEP-based BCI, compared to 3 patients with the P3-based BCI, showing a better performance with the SSVEP BCI than with the P3 BCI in the studied cohort. Moreover, the better performance of the SSVEP-based BCI was accompanied by a lower mental workload and a higher overall satisfaction. No relationship was found between BCI performance and level of motor impairment or quality of life.ConclusionOur results show a better usability of the SSVEP-based BCI than the P3-based one for the sessions performed by the tested population of locked-in patients with respect to all the criteria considered. The study shows the advantage of developing alternative BCIs with respect to the traditional matrix-based P3 speller using different designs and signal modalities such as SSVEPs to build a faster, more accurate, less mentally demanding and more satisfying BCI by testing both types of BCIs on a convenience sample of LIS patients.

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Section: Discussionmentioning

confidence: 99%

A Comparison of Two Spelling Brain-Computer Interfaces Based on Visual P3 and SSVEP in Locked-In Syndrome

et al. 2013

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“…As presented in a previous report from our group [ 18 ], test-retest studies have typically been performed at a group level. However, an interesting analysis for the potential clinical applications of this alpha ERD is to determine whether the individual maps for each subject exhibit a high correlation coefficient between measures.…”

Section: Introductionmentioning

confidence: 99%

“…An interesting benefit in this study is that we used the same EEG data that were employed in a previous publication [ 18 ], which will enable a comparison of the reliability scores of P3 and ERD in the same experimental procedure. Moreover, the coefficient of variation will be calculated to determine the potential application of alpha ERD in the clinical field and compare it to P3 values.…”

Section: Introductionmentioning

confidence: 99%

Retest reliability of individual alpha ERD topography assessed by human electroencephalography

et al. 2017

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BackgroundDespite the immense literature related to diverse human electroencephalographic (EEG) parameters, very few studies have focused on the reliability of these measures. Some of the most studied components (i.e., P3 or MMN) have received more attention regarding the stability of their main parameters, such as latency, amplitude or topography. However, spectral modulations have not been as extensively evaluated considering that different analysis methods are available.The main aim of the present study is to assess the reliability of the latency, amplitude and topography of event-related desynchronization (ERD) for the alpha band (10–14 Hz) observed in a cognitive task (visual oddball). Topography reliability was analysed at different levels (for the group, within-subjects individually and between-subjects individually).ResultsThe latency for alpha ERD showed stable behaviour between two sessions, and the amplitude exhibited an increment (more negative) in the second session.Alpha ERD topography exhibited a high correlation score between sessions at the group level (r = 0.903, p<0.001). The mean value for within-subject correlations was 0.750 (with a range from 0.391 to 0.954). Regarding between-subject topography comparisons, some subjects showed a highly specific topography, whereas other subjects showed topographies that were more similar to those of other subjects.ConclusionERD was mainly stable between the two sessions with the exception of amplitude, which exhibited an increment in the second session. Topography exhibits excellent reliability at the group level; however, it exhibits highly heterogeneous behaviour at the individual level. Considering that the P3 was previously evaluated for this group of subjects, a direct comparison of the correlation scores was possible, and it showed that the ERD component is less reliable in individual topography than in the ERP component (P3).

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“…[54] for complete speciications). In this "visual oddball task," the subject is asked to discriminate uncommon visual stimuli (target) from a sequence of frequent stimuli (standard).…”

Section: Procedures and Characteristics Of The Componentmentioning

confidence: 99%

Event-Related Potentials for the Study of Cognition

Vázquez‐Marrufo¹

2017

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Despite the vast literature on event-related potentials (ERPs), many clinical professionals are still unaware of the huge variety of possible applications they ofer. The aim of this chapter is not to show the classical use of ERPs, focused on analyzing the irst steps of information processing (sensory pathways). On the contrary, this chapter will be focused on the use of these ERPs in the assessment of cognitive function. In particular, this chapter is mainly focused on the use of ERPs to beter understand the neural bases of cognitive impairment from the electrical activity of the brain. Describing all the possible ERP components and their cognitive meaning is a huge endeavor, and this chapter will only be focused on three of them: contingent negative variation (CNV), mismatch negativity (MMN), and P300. To improve the reader's knowledge about these ERPs in cognition, a speciic description will be given about the stimulation required to obtain the speciic component, the topography, and latency shown. Moreover, a description of the neurophysiological bases of the component, its relationship with psychological processes and neural sources will be also included. Pathological alterations sufered by the component will also be briely described.Keywords: cognition, ERPs, latency, neural sources, pathology, topography IntroductionSince the 1960s, a proliic literature has been produced on the ield of event-related potentials (ERPs), related to the study of cognitive activity in the brain. In the beginning, these studies were more directed to the study of sensory and motor pathways. However, from studies such as in Refs. [1][2][3], ERPs were related to cognitive processes such as relevance of the stimulus, uncertainty, or mismatch with a previous stimulus.Up to the present day, many studies have been published by numerous groups worldwide using this technology. In spite of the crisis that the ERP technique sufered due to the arrival © 2017 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.of neuroimaging, ERPs have survived, and nowadays, still ofer an interesting way to explore the cognitive activity with a direct measure of the electrical activity of neurons.One of the main challenges that ERPs have to overcome is their application in the clinical ield through studies that verify the reliability of the technique. Nevertheless, it is necessary to deine the possible applications of these potentials to beter understand the etiology of cognitive pathology and develop possible therapeutic targeting in this ield.In this chapter, three important ERPs will be detailed: contingent negative variation (CNV), mismatch negativity (MMN), and P300. For each one, several topics will be tackled: (1) a generic description of the component; (2) a brief deinition of a procedure that allows evoking...

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Retest Reliability of Individual P3 Topography Assessed by High Density Electroencephalography

Cited by 17 publications

References 33 publications

A Comparison of Two Spelling Brain-Computer Interfaces Based on Visual P3 and SSVEP in Locked-In Syndrome

A Comparison of Two Spelling Brain-Computer Interfaces Based on Visual P3 and SSVEP in Locked-In Syndrome

Retest reliability of individual alpha ERD topography assessed by human electroencephalography

Event-Related Potentials for the Study of Cognition

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