Striking a balance: analyzing unbalanced event-related potential data

Tibon, Roni; Levy, Daniel

doi:10.3389/fpsyg.2015.00555

Cited by 43 publications

(35 citation statements)

References 22 publications

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“…The average number of trials included in the ERP analyses for each condition for each subject is given in Table . MLM is robust to unbalanced data, through a procedure called partial pooling (Gelman & Hill, ; Tibon & Levy, ), and therefore differing numbers of trials per condition are less problematic than in traditional rmANOVA.…”

Section: Resultsmentioning

confidence: 99%

“…2 To examine change over time in control-related responses, data from this study were analyzed using mixedeffects multilevel modeling (MLM). Recent reports have emphasized the advantages of MLM over traditional repeated measures analysis of variance (rmANOVA) for psychophysiological data (Kristjansson, Kircher, & Webb, 2007;Tibon & Levy, 2015;Tremblay & Newman, 2015;Vossen, Van Breukelen, Hermens, Van Os, & Lousberg, 2011). Of greatest relevance for the current research, MLM allows the modeling of data from individual trials over time (Tibon & Levy, 2015;Vossen et al, 2011).…”

Section: Current Studymentioning

confidence: 99%

“…Recent reports have emphasized the advantages of MLM over traditional repeated measures analysis of variance (rmANOVA) for psychophysiological data (Kristjansson, Kircher, & Webb, 2007;Tibon & Levy, 2015;Tremblay & Newman, 2015;Vossen, Van Breukelen, Hermens, Van Os, & Lousberg, 2011). Of greatest relevance for the current research, MLM allows the modeling of data from individual trials over time (Tibon & Levy, 2015;Vossen et al, 2011). Virtually all theoretical models of cognitive control posit dynamic temporal relationships between multiple control-related processes-conflict adaptation is an example-but traditional approaches to neurophysiological signal quantification (e.g., signal averaging across all trials within conditions) and analysis (rmANOVA) are not well suited to modeling such dynamics, for several reasons.…”

Section: Current Studymentioning

confidence: 99%

“…The average number of trials included in the ERP analyses for each condition for each subject is given in Table 2. MLM is robust to unbalanced data, through a procedure called partial pooling (Gelman & Hill, 2007;Tibon & Levy, 2015), and therefore differing numbers of trials per condition are less problematic than in traditional rmANOVA. Table 1, the model predicting RT showed a significant main effect of current trial type, such that participants were faster to correctly identify targets on compatible trials (M 5 382 ms; SD 5 104 ms) than on incompatible trials (M 5 430 ms; SD 5 106 ms).…”

Section: Res Ul Tsmentioning

confidence: 99%

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Temporal dynamics of reactive cognitive control as revealed by event‐related brain potentials

2017

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Reactive cognitive control refers to a complementary set of cognitive operations by which individuals monitor for and detect the presence of goal-interfering conflict (i.e., conflict monitoring/evaluation) and, subsequently, initiate attention-focusing and response selection processes to bolster goal-directed action in the face of such conflict (regulative control). The purpose of the current study was to characterize the nature of conflict adaptation in both components of this dynamic process across sequences of trials and, more broadly, across time as participants complete a cognitive control task. Fifty-two young adults completed a standard arrow flanker task while behavioral and ERP data were recorded. Multilevel modeling of sequences of compatible and incompatible trials over time showed that, whereas response time data demonstrated a typical conflict adaptation effect throughout the task, N2 and frontal slow wave (FSW) indices of conflict monitoring and regulative control, respectively, demonstrated significant conflict adaptation only during the early part of the task. Moreover, although differential change in N2 and FSW over time suggested that conflict monitoring and regulative control were dissociable, a reciprocal relation between them was maintained throughout the task and was not present in a component theoretically unrelated to conflict adaptation (visual attention-related N1). Findings are discussed in terms of compensatory processes that help to maintain goal-directed performance even as control-related neural responses become fatigued.

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Section: Resultsmentioning

confidence: 99%

Section: Current Studymentioning

confidence: 99%

Section: Current Studymentioning

confidence: 99%

Section: Res Ul Tsmentioning

confidence: 99%

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Temporal dynamics of reactive cognitive control as revealed by event‐related brain potentials

2017

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“…To analyse ROI data, we used a mixed-models analysis, which accommodates both within-and between-subject variability. This approach is particularly recommended for unbalanced data (an unequal number of trials in each condition, Tibon & Levy, 2015), which we had here due to the post-hoc division of trials into vivid, non-vivid and failure trials (See Tibon et al, 2014;Tibon & Levy, 2014a;Tibon & Levy, 2014b for a similar use of this approach). Importantly, rather than averaged estimates across participant/condition, the mixed-models employed here require estimation of the BOLD response for each trial.…”

Section: Roi Analysesmentioning

confidence: 99%

Multimodal integration and vividness in the angular gyrus during episodic encoding and retrieval

Tibon

Fuhrmann

Levy

et al. 2018

Preprint

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Much evidence suggests that the angular gyrus (AnG) is involved in episodic memory, but its precise role is yet to be determined. We examined two possible accounts, within the same experimental paradigm: the CoBRA account (Shimamura, 2011), which suggests that the AnG acts as a convergence zone that binds multimodal episodic features; and the Subjectivity account (Yazar et al., 2012), which implicates AnG involvement in subjective mnemonic experience (such as vividness or confidence). fMRI was employed during both encoding and retrieval of paired-associates. During study, female and male human participants memorised picture-pairs of common objects (in the unimodal task) or of an object-picture and an environmental sound (in the crossmodal task). At test, they performed a cuedrecall task, and further indicated the vividness of their memory. During retrieval, BOLD activation in the AnG was greatest for vividly remembered associates, consistent with the Subjectivity account.During encoding, the same effect of vividness was found, but this was further modulated by task:Greater activations were associated with subsequent recall in the crossmodal than the unimodal task.Thus, encoding data suggests an additional role to the AnG in cross-modal integration, consistent with its role at retrieval proposed by CoBRA. These results resolve some of the puzzles in the literature and indicate that the AnG can play different roles during encoding and retrieval, determined by the cognitive demands posed by different mnemonic tasks. ANGULAR GYRUS IN EPISODIC MEMORY 2 Significance StatementWe offer new insights into the multiplicity of processes that are associated with angular gyrus (AnG) activation during encoding and retrieval of newly formed memories. We used fMRI while human participants learned and subsequently recalled pairs of objects presented to the same sensory modality or to different modalities. We were able to show that the AnG is involved when vivid memories are created and retrieved, as well as when encoded information is integrated across different sensory modalities. These findings provide novel evidence for the contribution of the AnG to our subjective experience of remembering, alongside its role in integrative processes that promote subsequent memory. ANGULAR GYRUS IN EPISODIC MEMORY

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Striking a balance: analyzing unbalanced event-related potential data

Cited by 43 publications

References 22 publications

Temporal dynamics of reactive cognitive control as revealed by event‐related brain potentials

Temporal dynamics of reactive cognitive control as revealed by event‐related brain potentials

Multimodal integration and vividness in the angular gyrus during episodic encoding and retrieval

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