Task‐switching costs have distinct phase‐locked and nonphase‐locked EEG power effects

McKewen, Montana; Cooper, Patrick S.; Wong, Anthony; Michie, Patricia T.; Sauseng, Paul; Karayanidis, Frini

doi:10.1111/psyp.13533

Cited by 25 publications

(23 citation statements)

References 68 publications

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“…One of the reasons is that the subtraction of the evoked activity from TSE activity to obtain the induced activity is assuming that evoked activities are stable in time across trials. Therefore, future studies have to be performed to confirm the present results with different procedures described by other authors [34] to control for the possibility of jitter effects biasing induced activity.…”

Section: Plos Onementioning

confidence: 57%

Individual test-retest reliability of evoked and induced alpha activity in human EEG data

et al. 2020

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Diverse psychological mechanisms have been associated with modulations of different EEG frequencies. To the extent of our knowledge, there are few studies of the test-retest reliability of these modulations in the human brain. To assess evoked and induced alpha reliabilities related to cognitive processing, EEG data from twenty subjects were recorded in 58 derivations in two different sessions separated by 49.5 ± 48.9 (mean ± standard deviation) days. A visual oddball was selected as the cognitive task, and three main parameters were analyzed for evoked and induced alpha modulations (latency, amplitude and topography). Latency and amplitude for evoked and induced modulations showed stable behavior between the two sessions. The correlation between sessions for alpha evoked and induced topographies in the grand average (group level) was r = 0.923, p<0.001; r = 0.962, p<0.001, respectively. The within-subject correlation values for evoked modulation ranged from 0.472 to 0.974 (mean: 0.766), whereas induced activity showed a different range, 0.193 to 0.892 (mean: 0.655). Individual analysis of the test-retest reliability showed a higher heterogeneity in the induced modulation, probably due to the heterogeneous phases found in the second case. However, despite this heterogeneity in phase values for induced activity relative to the onset of the stimuli, an excellent correlation score was obtained for group topography, with values that were better than those of the grand average evoked topography. As a main conclusion, induced alpha activity can be observed as a stable and reproducible response in the cognitive processing of the human brain.

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Section: Plos Onementioning

confidence: 57%

Individual test-retest reliability of evoked and induced alpha activity in human EEG data

et al. 2020

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“…This study analysed data from the Age‐ility Project (Karayanidis et al, 2016), using the same dataset as McKewen et al (2020). Age‐ility participants were recruited from a range of sources, including secondary and tertiary education centres, community organisations and local businesses.…”

Section: Methodsmentioning

confidence: 99%

“…As discussed above, previous cued‐trials task‐switching literature has shown effects of switching and mixing tasks at both frontal and parietal sites. Based on our previous work in the same dataset (McKewen et al, 2020), FCz and Pz were chosen as the seeds for ISPC analyses in order to capture frontal and parietal networks. Based on previous connectivity analyses in cued‐trials task‐switching (Cooper et al, 2015; Lopez et al, 2019; Sauseng, Klimesch, Schabus, & Doppelmayr, 2005), and previous analyses of this dataset (McKewen et al, 2020), we focussed on ISPC analyses on theta activity (defined as 4–8 Hz).…”

Section: Methodsmentioning

confidence: 99%

“…During the CTI, ERPs robustly show a switch‐positivity, a larger cue‐locked centroparietal positivity for switch trials than mixed‐repeat trials (Barcelo, Escera, Corral, & Perianez, 2006; Finke, Escera, & Barcelo, 2012; Jost, Mayr, & Rosler, 2008; Karayanidis et al, 2009; Karayanidis, Coltheart, Michie, & Murphy, 2003; Nicholson, Karayanidis, Poboka, Heathcote, & Michie, 2005). Time‐frequency analyses show that, over a similar time window, switch trials elicit higher power over frontal and parietal sites in theta (Cooper, Darriba, Karayanidis, & Barcelo, 2016; Cooper, Wong, McKewen, Michie, & Karayanidis, 2017; Cunillera et al, 2012; McKewen et al, 2020), alpha (8–13 Hz; Cooper et al, 2016; Foxe, Murphy, & De Sanctis, 2014; Mansfield, Karayanidis, & Cohen, 2012), and delta (~0.5–4 Hz; Prada, Barcelo, Herrmann, & Escera, 2014) bands compared to mixed‐repeat trials. Additionally, compared to all‐repeat trials, mixed‐repeat trials elicit a larger cue‐locked centroparietal positivity, the mixing‐positivity (Jost et al, 2008; Manzi, Nessler, Czernochowski, & Friedman, 2011; Whitson et al, 2014) and higher cue‐locked frontal and parietal theta (Cooper et al, 2017) and alpha (McKewen et al, 2020) power.…”

Section: Introductionmentioning

confidence: 99%

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Dissociable theta networks underlie the switch and mixing costs during task switching

McKewen

Cooper

Skippen

et al. 2021

Human Brain Mapping

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During task‐switching paradigms, both event‐related potentials and time‐frequency analyses show switch and mixing effects at frontal and parietal sites. Switch and mixing effects are associated with increased power in broad frontoparietal networks, typically stronger in the theta band (~4–8 Hz). However, it is not yet known whether mixing and switch costs rely upon common or distinct networks. In this study, we examine proactive and reactive control networks linked to task switching and mixing effects, and whether strength of connectivity in these networks is associated with behavioural outcomes. Participants (n = 197) completed a cued‐trials task‐switching paradigm with concurrent electroencephalography, after substantial task practice to establish strong cue‐stimulus–response representations. We used inter‐site phase clustering, a measure of functional connectivity across electrode sites, to establish cross‐site connectivity from a frontal and a parietal seed. Distinct theta networks were activated during proactive and reactive control periods. During the preparation interval, mixing effects were associated with connectivity from the frontal seed to parietal sites, and switch effects with connectivity from the parietal seed to occipital sites. Lateralised occipital connectivity was common to both switch and mixing effects. After target onset, frontal and parietal seeds showed a similar pattern of connectivity across trial types. These findings are consistent with distinct and common proactive control networks and common reactive networks in highly practised task‐switching performers.

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“…Concerning the mixing cost, we are aware of only two previous studies 1 examining brain oscillations associated 1 During the revision process, we found out another very recent timefrequency study comparing switch and mixing costs (McKewen et al, 2020). We report it here for the reader's benefit.…”

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confidence: 95%

Brain oscillatory activity associated with switch and mixing costs during reactive control

et al. 2020

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Although this ancient Latin quote was not coined with reference to task-switching, a common finding in the cognitive control literature is that switching from one task to another incurs a significant "switch cost" as compared to repeating the same task. Yet, there is also a "mixing cost" when contrasting performance on the all-repeat trials from the single-task blocks and the repeat trials from the mixed blocks (Monsell, 2003; Rubin & Meiran, 2005). The switch cost is generally taken as an index of a phasic task-set reconfiguration process, which operates on a trial-by-trial basis to flexibly switch between different tasks and which itself includes multiple sub-processes such as retrieval of current rules and appropriate stimulus-response mappings from memory, resolution of carryover interference from the previous trial, suppression of the no longer relevant task-set and activation of the new relevant one (Monsell, 2003). Conversely, the mixing cost is thought to reflect higher memory demands

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Task‐switching costs have distinct phase‐locked and nonphase‐locked EEG power effects

Cited by 25 publications

References 68 publications

Individual test-retest reliability of evoked and induced alpha activity in human EEG data

Individual test-retest reliability of evoked and induced alpha activity in human EEG data

Dissociable theta networks underlie the switch and mixing costs during task switching

Brain oscillatory activity associated with switch and mixing costs during reactive control

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