Spatio-temporal patterns of event-related potentials related to audiovisual synchrony judgments in older adults

2017 ◽  
Vol 55 ◽  
pp. 38-48 ◽  
Author(s):  
Yu Man Chan ◽  
Michael Julian Pianta ◽  
Stefan Bode ◽  
Allison Maree McKendrick
Keyword(s):  
Older Adults ◽  
Event Related Potentials ◽  
Temporal Patterns ◽  
Related Potentials ◽  
Spatio Temporal

scholarly journals Temporal Dynamics of Event-Related Potentials during Inhibitory Control Characterize Age-Related Neural Compensation

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2323
Author(s):  
Elizabeth R. Paitel ◽  
Kristy A. Nielson
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Inhibitory Control ◽  
Right Hemisphere ◽  
Temporal Dynamics ◽  
Event Related Potentials ◽  
Conflict Monitoring ◽  
Age Related ◽  
Related Potentials ◽  
Spatio Temporal

Aging is accompanied by frontal lobe and non-dominant hemisphere recruitment that supports executive functioning, such as inhibitory control, which is crucial to all cognitive functions. However, the spatio-temporal sequence of processing underlying successful inhibition and how it changes with age is understudied. Thus, we capitalized on the temporal precision of event-related potentials (ERPs) to assess the functional lateralization of N200 (conflict monitoring) and P300 (inhibitory performance evaluation) in young and healthy older adults during comparably performed successful stop-signal inhibition. We additionally used temporal principal components analysis (PCA) to further interrogate the continuous spatio-temporal dynamics underlying N200 and P300 activation for each group. Young adults demonstrated left hemisphere-dominant N200, while older adults demonstrated overall larger amplitudes and right hemisphere dominance. N200 activation was explained by a single PCA factor in both age groups, but with a more anterior scalp distribution in older adults. The P300 amplitudes were larger in the right hemisphere in young, but bilateral in old, with old larger than young in the left hemisphere. P300 was also explained by a single factor in young adults but by two factors in older adults, including distinct parieto-occipital and anterior activation. These findings highlight the differential functional asymmetries of conflict monitoring (N200) and inhibitory evaluation and adaptation (P300) processes and further illuminate unique age-related spatio-temporal recruitment patterns. Older adults demonstrated lateralized recruitment during conflict processing and bilateral recruitment during evaluation and adaptation, with anterior recruitment common to both processes. These fine-grained analyses are critically important for more precise understanding of age-related compensatory activation.

scholarly journals Temporal Dynamics of Event-Related Potentials During Inhibitory Control Characterize Age-Related Neural Compensation

2021 ◽  
Author(s):  
Elizabeth R Paitel ◽  
Kristy A Nielson
Keyword(s):  
Older Adults ◽  
Left Hemisphere ◽  
Inhibitory Control ◽  
Response Inhibition ◽  
Temporal Dynamics ◽  
Event Related Potentials ◽  
Conflict Monitoring ◽  
Age Related ◽  
Related Potentials ◽  
Spatio Temporal

Aging is accompanied by frontal lobe and non-dominant hemisphere recruitment that supports executive functioning, such as inhibitory control, which is crucial to all cognitive functions. Yet, the spatio-temporal sequence of processing underlying successful inhibition and how it changes with age is understudied. Thus, we assessed N200 (conflict monitoring) and P300 (response inhibition, performance evaluation) event-related potentials (ERPs) in young and healthy older adults during comparably performed successful stop-signal inhibition. We additionally interrogated the continuous spatio-temporal dynamics of N200- and P300-related activation within each group. Young adults had left hemisphere dominant N200, while older adults had overall larger amplitudes and right hemisphere dominance. N200 activation was biphasic in both groups but differed in scalp topography. P300 also differed, with larger right amplitudes in young, but bilateral amplitudes in old, with old larger than young in the left hemisphere. P300 was characterized by an early parieto-occipital peak in both groups, followed by a parietal slow wave only in older adults. A temporally similar but topographically different final wave followed in both groups that showed anterior recruitment in older adults. These findings illuminate differential age-related spatio-temporal recruitment patterns for conflict monitoring and response inhibition that are critically important for understanding age-related compensatory activation.

Extracting Spatio-temporal Feature for Classification of Event-related Potentials*

2011 ◽  
Vol 38 (9) ◽  
pp. 866-871 ◽  
Author(s):  
Zhi-Hua HUANG ◽  
Ming-Hong LI ◽  
Yuan-Ye MA ◽  
Chang-Le ZHOU
Keyword(s):  
Event Related Potentials ◽  
Related Potentials ◽  
Spatio Temporal ◽  
Temporal Feature

scholarly journals Characterization of spatio-temporal epidural event-related potentials for mouse models of psychiatric disorders

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Xin Wang ◽  
António Pinto-Duarte ◽  
M. Margarita Behrens ◽  
Xianjin Zhou ◽  
Terrence J. Sejnowski
Keyword(s):  
Psychiatric Disorders ◽  
Mouse Models ◽  
Event Related Potentials ◽  
Related Potentials ◽  
Spatio Temporal

Event-related potentials associated with auditory attention capture in younger and older adults

2019 ◽  
Vol 77 ◽  
pp. 20-25
Author(s):  
Cassandra Morrison ◽  
Farooq Kamal ◽  
Kenneth Campbell ◽  
Vanessa Taler
Keyword(s):  
Older Adults ◽  
Event Related Potentials ◽  
Attention Capture ◽  
Auditory Attention ◽  
Related Potentials

Comparison of Early Cortical Networks in Efficient and Inefficient Visual Search: An Event-Related Potential Study

2003 ◽  
Vol 15 (7) ◽  
pp. 1039-1051 ◽  
Author(s):  
Ute Leonards ◽  
Julie Palix ◽  
Christoph Michel ◽  
Vicente Ibanez
Keyword(s):  
Event Related Potentials ◽  
Temporal Correlation ◽  
Temporal Analysis ◽  
Search Display ◽  
Stimulus Onset ◽  
Event Related Potential ◽  
Time Range ◽  
Cortical Networks ◽  
Related Potentials ◽  
Spatio Temporal

Functional magnetic resonance imaging studies have indicated that efficient feature search (FS) and inefficient conjunction search (CS) activate partially distinct frontoparietal cortical networks. However, it remains a matter of debate whether the differences in these networks reflect differences in the early processing during FS and CS. In addition, the relationship between the differences in the networks and spatial shifts of attention also remains unknown. We examined these issues by applying a spatio-temporal analysis method to high-resolution visual event-related potentials (ERPs) and investigated how spatio-temporal activation patterns differ for FS and CS tasks. Within the first 450 msec after stimulus onset, scalp potential distributions (ERP maps) revealed 7 different electric field configurations for each search task. Configuration changes occurred simultaneously in the two tasks, suggesting that contributing processes were not significantly delayed in one task compared to the other. Despite this high spatial and temporal correlation, two ERP maps (120–190 and 250–300 msec) differed between the FS and CS. Lateralized distributions were observed only in the ERP map at 250–300 msec for the FS. This distribution corresponds to that previously described as the N2pc component (a negativity in the time range of the N2 complex over posterior electrodes of the hemisphere contralateral to the target hemifield), which has been associated with the focusing of attention onto potential target items in the search display. Thus, our results indicate that the cortical networks involved in feature and conjunction searching partially differ as early as 120 msec after stimulus onset and that the differences between the networks employed during the early stages of FS and CS are not necessarily caused by spatial attention shifts.

Event-Related Potentials

2017 ◽  
Author(s):  
Marco Congendo ◽  
Fernando H. Lopes da Silva
Keyword(s):  
Principal Component ◽  
Event Related Potentials ◽  
Component Analysis ◽  
Statistical Testing ◽  
Time Averaging ◽  
Common Spatial Pattern ◽  
Topographic Analysis ◽  
Temporal Filtering ◽  
Related Potentials ◽  
Spatio Temporal

Event-related potentials (ERPs) can be elicited by a variety of stimuli and events in diverse conditions. This chapter covers the methodology of analyzing and quantifying ERPs in general. Basic models (additive, phase modulation and resetting, potential asymmetry) that account for the generation of ERPs are discussed. The principles and requirements of ensemble time averaging are presented, along with several univariate and multivariate methods that have been proposed to improve the averaging procedure: wavelet decomposition and denoising, spatial, temporal and spatio-temporal filtering. We emphasize basic concepts of principal component analysis, common spatial pattern, and blind source separation, including independent component analysis. We cover practical questions related to the averaging procedure: overlapping ERPs, correcting inter-sweep latency and amplitude variability, alternative averaging methods (e.g., median), and estimation of ERP onset. Some specific aspects of ERP analysis in the frequency domain are surveyed, along with topographic analysis, statistical testing, and classification methods.

scholarly journals Electrophysiological differences in older and younger adults’ anaphoric but not cataphoric pronoun processing in the absence of age-related behavioural slowdown

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Seçkin Arslan ◽  
Katerina Palasis ◽  
Fanny Meunier
Keyword(s):  
Older Adults ◽  
Short Term Memory ◽  
Memory Span ◽  
Event Related Potentials ◽  
Brain Regions ◽  
Younger Adults ◽  
Behavioural Responses ◽  
Age Related ◽  
Related Potentials ◽  
Anterior Negativity

Abstract This study reports on an event-related potentials experiment to uncover whether per-millisecond electrophysiological brain activity and analogous behavioural responses are age-sensitive when comprehending anaphoric (referent-first) and cataphoric (pronoun-first) pronouns. Two groups of French speakers were recruited (young n = 18; aged 19–35 and older adults n = 15; aged 57–88) to read sentences where the anaphoric/cataphoric pronouns and their potential referents either matched or mismatched in gender. Our findings indicate that (1) the older adults were not less accurate or slower in their behavioural responses to the mismatches than the younger adults, (2) both anaphoric and cataphoric conditions evoked a central/parietally distributed P600 component with similar timing and amplitude in both the groups. Importantly, mean amplitudes of the P600 effect were modulated by verbal short-term memory span in the older adults but not in the younger adults, (3) nevertheless, the older but not the younger adults displayed an additional anterior negativity emerging on the frontal regions in response to the anaphoric mismatches. These results suggest that pronoun processing is resilient in healthy ageing individuals, but that functional recruitment of additional brain regions, evidenced with the anterior negativity, compensates for increased processing demands in the older adults’ anaphora processing.

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