Distributed neural activity supports a broad range of perceptual, motor, affective, and cognitive functions. Discovering how brain systems implement this broad behavioral repertoire is critical for elucidating the neural basis of human cognition. Past studies have revealed two organizational principles – low-dimensional architecture and multi-task hubs – that connect distributed neural activity with task performance across functional domains.

The application of dimensionality reduction techniques on whole-brain imaging data has revealed a relatively low-dimensional organization of cortical neural activity. Specifically, the number of variables required to explain a large amount of variance in distributed neural activity is far lower than the total number of variables in the data (MacDowell and Buschman, 2020; Nakai and Nishimoto, 2020; Shine et al., 2019b). The spatiotemporal patterns of these variables are commonly referred to as intrinsic networks in task-free conditions, or manifolds, motifs, and latent components in task contexts. This low-dimensional organization may reflect an elementary set of information processes implemented by distributed brain systems (Cunningham and Yu, 2014; Yeo et al., 2016), in which different tasks selectively engaged selective latent activity patterns depending on the specific processing requirements of individual tasks.

The anatomical overlap between spatiotemporal components predicts that some brain regions broadly participate in multiple tasks. In support of this prediction, studies have found that associative regions in frontal and parietal cortices are involved in executing a wide array of tasks (Cole et al., 2013; Duncan, 2010). These task-flexible regions, also commonly referred to as brain hubs (Gratton et al., 2018; van den Heuvel and Sporns, 2013), have diverging connectivity with multiple brain systems, and are thought to perform integrative functions that allow perceptual inputs to interact with contextual task representations for adaptive task control (Bertolero et al., 2018; Bertolero et al., 2015; Ito et al., 2022; Nee, 2021). The behavioral significance of brain hubs is affirmed by lesion studies demonstrating that lesions to hub regions are associated with task impairments across multiple functional domains (Hwang et al., 2021; Reber et al., 2021; Warren et al., 2014).

However, a prevailing assumption is that diverse human behavior depends on the organization of cortical activity, and the contribution from subcortical regions, particularly the thalamus, is not well understood. Our previous studies demonstrated that the human thalamus contains a complete representation of intrinsic cortical functional networks, and additionally, exhibits a hub-like connectivity profile interlinking multiple cortical systems (Hwang et al., 2021; Hwang et al., 2017). Furthermore, lesions to the anterior and the medial thalamus in human patients are associated with behavioral impairments across functional domains (Hwang et al., 2020a; Hwang et al., 2021). Given that every cortical region receives projections from multiple thalamic nuclei and that the thalamus mediates striatal and cerebellar influences on cortical (Shine, 2020), the thalamocortical system is ideally suited to shape cortex-wide activity patterns that instantiate cognitive representations. The relationship between thalamic task activity and cortical cognitive representations, however, are not well understood.

Given the observations described above, we expect that task functional magnetic resonance imaging (fMRI) data obtained from the human thalamus to exhibit a similar low-dimensional organization like the cortical system. Furthermore, there should be task hub regions within the human thalamus that broadly participate in multiple cognitive tasks. The current study applied a dimension reduction technique to determine how thalamic task-evoked activity and thalamic hubs are organized to support cognitive functions across diverse functional domains. To this end, we analyzed fMRI data where human subjects performed a rich battery of tasks designed to elicit neural activity for a wide range of cognitive functions. Our study addressed the following two specific questions. First, are there thalamic hub regions that exhibit task-evoked activity by multiple tasks across domains? Second, can thalamic task-evoked activity be used to predict cortical task-evoked activity patterns? Answering these questions would reveal a general principle of how the human thalamocortical system contributes to higher-order, multi-domain cognitive task activity.

To determine the organization of task-evoked thalamic activity, we analyzed two fMRI datasets, both of which utilized rich batteries of tasks designed to elicit a wide range of processes encompassing perceptual, affective, memory, social, motor, language, and cognitive domains (Figure 1A). In the first dataset, the multi-domain task battery (MDTB) dataset, 21 subjects performed 25 behavioral tasks (King et al., 2019). In the second dataset, the Nakai and Nishimoto (N&N) dataset, 6 subjects performed 103 tasks (Nakai and Nishimoto, 2020).

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Hub organization of thalamic task-evoked activity

Examining the spatial patterns of thalamic components (Figure 1B) revealed that several thalamic subregions showed spatial overlap across multiple components, which suggests that these thalamic subregions may support multiple tasks. We reasoned that if a thalamic voxel is broadly participating in multiple tasks, it will express stronger weights for top thalamic activity components that explained a large amount of variance in evoked activity patterns across tasks. Therefore, to further map ‘task hub’ regions in the human thalamus, we calculated a metric by summing each voxel’s absolute component weight for the top 10 components. Results showed that for the MDTB dataset, the anterior, medial, medio-posterior, and dorsal thalamus exhibited strong task hub properties (Figure 2A). For the N&N dataset, the posterior thalamus did not exhibit strong task hub property, and the spatial correlation between task hub metrics from the two datasets was r=0.36. We then recalculated the task hub metric using lower ranked components (components number 11th to 20th, explained less than 2% of variances), and results revealed a different anatomical pattern (Figure 2—figure supplement 1). These results suggest that the anterior, medial, and posterior thalamic task hub patterns we identified were primarily driven by component weights summed across top components that explained large portion of variance in task-evoked activity.

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Network hubs in the human thalamus exhibit diverse functional connectivity (FC) patterns interlinking multiple cortical systems (Greene et al., 2020; Hwang et al., 2017). To determine whether the tasks hubs we identified correspond to network hub regions previously identified in the thalamus, we compared the spatial similarity of task hubs with FC hubs. We calculated a network hub metric, the participation coefficient (Gratton et al., 2012; Guimerà and Nunes Amaral, 2005; Figure 2—figure supplement 2), using every thalamic voxel’s FC matrix with 400 cortical regions (Schaefer et al., 2018). When calculating FC matrices, we used timeseries after removing task-evoked variances from the preprocessed fMRI data, to reduce shared variances in task-evoked activations biasing FC estimates (see Methods for details). The task hubs showed significant spatial correspondence with FC hubs (Figure 2A; spatial correlation: MDTB mean = 0.17, SD = 0.083, p<0.001; N&N mean = 0.17, SD = 0.05, p<0.001; spatial correlation between MDTB and N&N: r=0.55). One discrepancy was the posterior thalamus, which showed strong task hub but not network hub property for the MDTB dataset. We then projected the task hubs estimates onto the cortex by calculating the dot product between each thalamic voxel’s task hub estimate and its thalamocortical FC matrix. We found that tasks hubs were most strongly coupled with associate regions in the frontal and parietal cortex, for example, the lateral frontal, the insula, the dorsal medial prefrontal, and the intraparietal cortices (Figure 2B; spatial correlation between MDTB and N&N: r=0.46).

Given that the thalamus is not a homogenous structure and can be divided into different subdivisions or nuclei based on its functional and histological properties, we summarized the spatial distribution of task hub estimates (CompW) using two different thalamic atlases (Figure 3). First, the Morel atlas was used to determine the location of different thalamic nuclei Krauth et al., 2010; this atlas maps human thalamic nuclei based on cyto- and myelo-architecture information in stained slices from five postmortem human brains, and further transformed to the template space. Second, for the network atlas, we assigned each thalamic voxel to one of the seven canonical cortical function networks (Schaefer et al., 2018) that we used for calculating network hubs. We then averaged the task hub estimates within each thalamic nucleus or functional parcellation. In both datasets, we found the task hub values to be highest in the anterior and mediodorsal nuclei. These nuclei groups are known to have strong reciprocal connectivity with frontal regions (Giguere and Goldman-Rakic, 1988; Selemon and Goldman-Rakic, 1988). We also found the medial pulvinar to show high task hub value but only in the MDTB dataset, likely because the N&N dataset did not show high task hub value in the posterior thalamus. For the functional network parcellation atlas, between datasets discrepancies were also found in posterior thalamus. For example, in the MDTB dataset, the DF parcellation (which overlapped with the anterior medial, medial, and posterior medial thalamus) was found to show the highest task hub value. For the N&N dataset, the posterior thalamus did not exhibit high task hub value, but the FP parcellation, which covered the dorsal bank of the medial thalamus, showed the highest task hub value. Overall, these results suggest that thalamic task hubs do not overlap with one functional network parcellation or thalamic nucleus, instead overlap with multiple thalamic parcellations and nuclei.

Figure 3

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Predict cortical task activity with thalamic task-evoked activity

To further test whether thalamic task-evoked activity is related to diverse cognitive functions putatively implemented by distributed cortical activity, we adapted the activity flow mapping procedure (Cole et al., 2016; Ito et al., 2017) to test whether thalamic task-evoked responses can be used to predict cortical task activity (Figure 4A). Briefly, for every thalamic voxel, we calculated the dot product between the thalamic-evoked response pattern of each task and the thalamocortical FC matrix, using a split-half cross-validation procedure (see Methods). This calculation yielded a predicted cortex-wide activity pattern for every task, and prediction accuracy was calculated by comparing the predicted pattern to the observed cortical activity pattern using Pearson correlation. We then compared the model performance against three null models. The first null model randomly shuffled thalamic-evoked responses (the ‘null model’), which assumed no spatial structure in thalamic task-evoked responses. The second null model set all thalamic-evoked responses to the same value (‘1’) across all voxels (the ‘uniformed evoked model’), which assumed that cortical activity patterns are determined only by the summated inputs from thalamocortical FC patterns. The third null model was constructed by averaging the evoked response amplitudes across tasks for every thalamic voxel, which assumed that there is no difference in thalamic activity patterns between tasks. Finally, activity flow model performance is limited by the reliability of the data used to calculate the predicted pattern. Therefore, we calculated the noise ceiling that accounted for the split-half reliability of thalamic-evoked responses, thalamocortical FC, and cortical-evoked responses (see Methods for details). All prediction accuracy was normalized by the noise ceiling. For the null models, prediction accuracy was normalized by the thalamocortical model’s noise ceiling.

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The mean prediction accuracy of the thalamocortical activity flow model was 0.29 for the MDTB dataset and 0.15 for the N&N dataset (Figure 4B). As described above, the prediction accuracy is limited by the reliability of the thalamic and cortical data (noise ceiling). After accounting for the noise ceiling (Figure 4—figure supplement 1), the normalized prediction accuracy was 0.5 for MDTB and 0.62 for N&N (Figure 4C), which indicates that the thalamocortical model was able to account for up to 38% of variance in task-evoked activity patterns in the cortex. We further found that thalamocortical activity flow model outperformed the null models, except for the N&N dataset when compared to the averaged evoked pattern model (Figure 4C; MDTB thalamocortical model vs. null model: t(20) = 11.22, p<0.001; MDTB thalamocortical model vs. uniformed evoked model: t(20) = 12.05, p<0.001; MDTB thalamocortical model vs. averaged pattern model: t(20) = 6.88, p<0.001; N&N thalamocortical model vs. null model: t(5) = 11.22, p=0.018; N&N thalamocortical model vs. uniformed evoked model: t(5) = 4.75, p=0.005; N&N thalamocortical model vs. averaged pattern model: t(5) = 1.61, p=0.17). These results indicate that thalamic task-evoked responses can predict cortical activity patterns.

We then sought to compare our thalamocortical activity flow model to other cortical and subcortical regions. We constructed a series of comparison models by applying the same split-half cross-validation activity flow mapping procedure to 100 cortical regions of interests (ROIs) that had similar size as the thalamus (Schaefer et al., 2018), as well as to other subcortical regions including the hippocampus, the caudate, the putamen, and the globus pallidus. We found that several cortical regions also showed strong prediction performance, including the insula, the inferior frontal cortex, the dorsal medial frontal cortex, the intraparietal sulcus, and the lateral occipital cortex (Figure 4D for unnormalized prediction accuracy, Figure 4E for noise normalized prediction accuracy). However, the thalamocortical model outperformed all comparison models. For example for both datasets, lateral ROIs in the visual network showed the highest normalized prediction accuracy, but still statistically weaker than the thalamocortical activity flow model (MDTB: t(20) = 2.91, p=0.008; N&N: t(5) = 3.3, p=0.021). These results indicate that the thalamocortical activity flow model is a strong predictor of cortical task activity.

Lesions to task hubs in the thalamus are associated with impaired prediction of task reorientations and representational geometry

The results presented in Figure 4 demonstrated that thalamic task-evoked responses can predict cortical activity patterns that putatively support cognitive representations. However, it is unclear to what degree task hubs in the thalamus contribute to these results. One possibility is that all thalamic voxels contribute equally to cortical task activity patterns. Another possibility is that, since thalamic task hubs are broadly engaged by multiple tasks and exhibited diverging connectivity patterns with multiple cortical systems, thalamic task hubs have a stronger contribution to predicting cortical task activity patterns. To evaluate this prediction, we performed virtual lesion simulations. Specifically, we systematically removed 20% of thalamic voxels based on their percentile rank of task hub estimates and calculated the percentage of reduction in prediction accuracy from the activity flow analysis. For both datasets, we found that removing voxels with strong task hub estimates decreased the prediction accuracy in cortical task-evoked activity patterns (Figure 5A). We fitted a regression model to test the relationship between reduction in prediction and percentile rank of task hub metrics removed, and found significant negative associations (MDTB activity flow prediction: b=–0.43, SE = 0.019, t=–22.63, p<0.001; N&N activity flow prediction: b=–0.1, SE = 0.028, t=–3.79, p<0.001). These results indicate that virtual lesioning of thalamic task hubs had a stronger impact on reducing the model’s ability to predict cortical activity patterns. Furthermore, thalamic voxels with the strongest impact on prediction performance were spatially located in the anterior, medial, mediodorsal, and medial posterior thalamus that we previously identified as task hubs (Figure 5B; spatial correlation between MDTB and N&N r=0.29).

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We compared these simulation results with neuropsychological impairments found in 20 human patients with focal thalamic lesions. Neuropsychological profiles of these patients were described in detail in our previous publication (Hwang et al., 2021). Briefly, patients performed a battery of neuropsychological tests to assess executive, language, memory, learning, visuospatial, and construction functions (Lezak et al., 2012). Test performance was then compared to published, standardized norms and converted to z-scores quantify the severity of impairment (Figure 6A). Patients were grouped into two groups, those that showed impairment (z-score <–1.695, worse than 95 percentile of the normative population) in single or fewer domains (the SM group) vs. those showed impairment across multiple domains (the MM group; Figure 6B). There were no statistically significant differences in the lesion volumes between these two groups of patients (MM group: mean = 1559 mm³, SD = 1370 mm³; SM group: mean = 1073 mm³, SD = 925 mm³; group difference in lesion size, t(18) = 0.87, p=0.39).

Figure 6

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Lesion sites from each group were compared to the effects of the simulated lesions presented in Figure 5. Specifically, we compared the percentages of reduction in voxels from these two groups of lesions. We found that simulated lesions to voxels that overlapped with lesion sites in the MM patient group showed larger reductions in task activity predictions for the N&N dataset but not the MDTB dataset (Figure 6C; MDTB: Komogorov-Smirnov test D=0.048, p=0.065; N&N: Komogorov-Smirnov test D=0.25, p<0.001). These empirical results from human patients support our simulated lesion analyses, suggesting that lesioning task hubs in the human thalamus are associated with behavioral deficits across functional domains.

It was hypothesized that the thalamus influences cognitive representations beyond sensory and motor domains (Halassa and Sherman, 2019; Wolff and Vann, 2019). Anatomically, every cortical region receives inputs from one or many thalamic subregions, and most thalamic subregions send signals to one or many cortical systems (Jones, 2001; Sherman, 2007). Functionally, resting-state fMRI studies have found a complete representation of intrinsic cortical networks in the human thalamus (Greene et al., 2020; Hwang et al., 2017; Yuan et al., 2016; Zhang et al., 2008). Several of these networks, such as the FP, CO, and DF, have been implicated in multiple cognitive functions (Sadaghiani et al., 2010; Seeley et al., 2007). These observations raised a broader question of if and how the human thalamus contributes to cognitive task activity across functional domains. The current study addressed this question by investigating how thalamic task-evoked activity are organized and how it can predict cortical cognitive task activity.

We identified several key organizational characteristics. First, the anterior, medial, and posterior-medial thalamus participated in multiple tasks, and these ‘task hubs’ spatially overlapped with FC hubs mapped in our previous studies (Hwang et al., 2021; Hwang et al., 2017). Second, thalamic task-evoked activity can predict task-specific activity patterns in the cortex via a linear thalamocortical activity flow model. Critically, when compared to comparison models and models built on other brain structures, this thalamocortical activity flow model performed the best in predicting cortical task activity, highlighting the capacity of the thalamus in influencing distributed activity patterns that may instantiate cognitive representations. Finally, findings from the thalamocortical activity flow model were further corroborated by simulated lesions and neuropsychological impairments observed in patients with focal thalamic lesions, affirming the behavioral significance of thalamocortical interactions. Collectively, these findings highlight a general and critical role the human thalamocortical system supporting cognitive functions.

Neural systems support a rich and diverse behavioral repertoire. Human functional neuroimaging and studies of animal models found a low-dimensional organization scheme in cortical neural activity (Beam et al., 2021; Karolis et al., 2019; MacDowell and Buschman, 2020; Nakai and Nishimoto, 2020; Shine et al., 2019b). Given this finding, multi-task fMRI data obtained from the human thalamus should exhibit similar property. In our study, we applied a dimension reduction procedure to decompose multi-task thalamic activity into low-dimensional task components. Notably, we found thalamic task components that explained large amount of variances across tasks expressed strongest weights in anterior, medial, and posterior thalamus, but not in lateral thalamic regions that overlap with first-order thalamic relays such as the lateral geniculate nucleus and the ventrolateral nucleus.

Because of its unique connectivity profile, the thalamus may be in an ideal position to influence cortex-wide task activity and the diverse cognitive functions cortical activity patterns instantiate. Because every cortical region receives inputs from one or multiple thalamic regions, thalamocortical connectivity may be more effective in pushing cortical activity patterns to the desired task state. We speculate that the thalamus may be at the nexus where specific activity patterns in the thalamus can be selectively down- or up-regulated to meet the specific information processing demands of different tasks. Functions that may be influenced by the thalamocortical system suggested by previous studies include selection and gain control (Halassa and Kastner, 2017), adjustment of inter-regional communication (Hwang et al., 2020b; Saalmann et al., 2012), and modulation of cortical excitability (Kosciessa et al., 2021). The small size of the thalamus further suggests a potential role in modulating the dimensionality of task-evoked cortical activity – for instance, previous studies have found that thalamic activity correlates with the dimensionality and the strength of cross-system coupling between cortical regions (Garrett et al., 2018; Shine et al., 2019b), and thalamic lesions disrupt the low-dimensional cortical network organization (Hwang et al., 2017).

The studies described above suggest a strong relationship between thalamic activity and cortical cognitive activity. We further tested whether we can predict cortical activity patterns based on thalamic task-evoked activity and thalamocortical FC pattern with cortical systems. We found that our data-driven thalamocortical activity flow model can indeed successfully predict task-specific activity patterns observed in the cortex, better than null models that assumed that the thalamocortical system does not carry task-specific information. While the observed prediction accuracy was lower than previous studies that focused on cortico-cortical activity flow models (Cole et al., 2016), most of those studies included multiple cortical regions to build the prediction model. Our study tested a different question to evaluate the predictive power of a single region, the thalamus, relative to other brain regions. We found that after accounting for the noise ceiling, thalamic activity alone was able to predict approximately 38% of the systematic variance of cortical activity patterns across tasks. Critically, we found that the thalamocortical model outperformed comparison models constructed with other cortical and subcortical structures, including frontal (the insula and the inferior frontal sulcus), parietal, and striatal regions previously implicated in adaptive control of tasks (Badre and Nee, 2018; Ito et al., 2022). This result suggests that the thalamocortical system exerts a strong influence on cortical activity that instantiates cognitive representations.

Placing the thalamus in a central position for influencing cortex-wide cognitive activity has several benefits. For instance, the thalamus consists of two classes of thalamocortical projection cells, ‘matrix’ and ‘core’ cells, where core cells target specific granular cortical structures, and matrix cells diffusely project to multiple brain regions (Jones, 2001). Given that different brain regions may be encoding different perceptual and cognitive information (Christophel et al., 2017), selectively modulating thalamic activity may facilitate targeted activations of cortical representations via associated thalamocortical interactions. The diffuse projection pattern of matrix cells in the thalamus may simultaneously activate multiple cortical regions and promote inter-system integration when required (Hwang and D’Esposito, 2022; Jones, 2001). Furthermore, the thalamus is modulated by inputs from other subcortical structures, such as the reticular nucleus, the basal ganglia, the superior colliculus, and the cerebellum (Bostan and Strick, 2018; Hwang et al., 2020b). This anatomical feature suggests that the thalamus may be an efficient target for exerting neuromodulatory (e.g., dopaminergic) influences on cognitive processes when required (Castro-Alamancos and Gulati, 2014; Garrett et al., 2022). Several computation models have leveraged these characteristics to explain the functions of basal-ganglia-thalamic circuits for higher-order cognitive functions (Jaramillo et al., 2019; O’Reilly and Frank, 2006).

In our previously study (Hwang et al., 2017), we found that the anterior, medial, and posterior thalamus to have strong network hub properties, exhibiting strong FC with multiple cortical systems in frontal and parietal cortices. Network hubs in the frontal and parietal cortices have also been found to broadly participate in cognitive tasks across different functional domains (Bertolero et al., 2015; Yeo et al., 2016), likely reflect its role in instantiating task representations (Schumacher and Hazeltine, 2016) and support cross-domain cognitive functions that arise from brain-wide network interactions (Gratton et al., 2018; van den Heuvel and Sporns, 2013). We hypothesized that network hubs in the thalamus may share this property with cortical network hubs. However, our previous study utilized resting-state FC, and multi-task fMRI data are needed to test task participation. In the current study, we analyzed task-evoked activity patterns in the thalamus and found task hub regions overlapped with network hubs in the anterior, medial, and posterior thalamic regions.

We found that thalamic task hubs were most strongly coupled with multiple regions across frontal and parietal associative cortices, including subregions that found to exhibit functional specialization for specific tasks as well as task-flexible regions (Yeo et al., 2016). Several selective regions within the frontal and parietal cortices have been hypothesized to be part of a flexible multiple-demand system (Assem et al., 2020) and thus, these thalamic subregions may be part of a core system whose functions are required to perform specific computations that are common across many different task contexts. One strong test of the behavioral relevance of these thalamic task hubs is to examine the effects of lesions. If thalamic task hubs are part of a domain-general core, lesioning task hubs should be associated with broad behavioral deficits not confined to a specific behavioral domain. Indeed, we found that simulated lesions to thalamic task hubs impaired prediction accuracy in cortical activity pattern across tasks, and stroke lesions to the anterior-medial thalamus in human patients were associated with behavioral deficits across functional. At this point we are agnostic to the specific function these thalamic task hubs perform. One hypothesis, suggested by findings from rodent models, is that the medial thalamus excites task-relevant and inhibits task-irrelevant cortical activity that encodes working memory representations (Mukherjee et al., 2021; Rikhye et al., 2018). Thus, in human subjects, thalamocortical interactions between thalamic task hubs and frontoparietal systems may control task representations that bind sensory, motor, and contextual information that are necessary for adaptive behavior across tasks (Schumacher and Hazeltine, 2016). This is an open question that should be evaluated in future studies.

On important limitation of our study is that our thalamocortical activity flow model cannot establish the directionality of thalamic activity influencing cortical activity. It is more likely that brain systems instantiate cognitive representations via recurrent connectivity among cortical regions and the thalamus, as well as integrating inputs from other brain structures. As discussed above, including all brain regions into the activity flow model can substantially improve model performance in predicting task-specific activity patterns (Cole et al., 2016). Nevertheless, our findings suggest that, across the whole brain, the thalamus likely has one of the strongest contributions to cortical task activity. Another important limitation is that the posterior thalamus exhibited strong task hub property in the MDTB dataset but not the N&N dataset. We suspect this could be related to differences in behavioral tasks across the two datasets, and speculatively, to the increased noise in the N&N dataset, given the lower number of observations per task and lower subcortical signal-to-noise ratio. One strong test of mapping task hubs is the lesion methods, and in our previous study (Hwang et al., 2021) we did not have good lesion coverage on the pulvinar nucleus. Future studies should test whether patients with pulvinar lesions have cognitive deficits beyond visual attention tasks (Snow et al., 2009). To conclude, our study reported important organizational principles of how thalamic task-evoked activity and thalamocortical connectivity supports cognitive tasks. These results highlight how the thalamus is in a central position for supporting cognitive task representations.

Raw data are available at OpenNeuro.org (https://openneuro.org/datasets/ds002105/ and https://openneuro.org/datasets/ds002306/). Code and data are available at (https://github.com/HwangLabNeuroCogDynamics/ThalamicTaskHubs; copy archived at swh:1:rev:d876ea93f1174ffdfe35c60f1f8b0ba8b637b037).

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Author details

1. Kai Hwang

   1. Department of Psychological and Brain Sciences, University of Iowa, Iowa City, United States
   2. Cognitive Control Collaborative, University of Iowa, Iowa City, United States
   3. Iowa Neuroscience Institute, University of Iowa, Iowa City, United States
   4. Department of Psychiatry, University of Iowa, Iowa City, United States

   Contribution

   Conceptualization, Resources, Software, Formal analysis, Supervision, Funding acquisition, Validation, Investigation, Visualization, Methodology, Writing – original draft, Project administration, Writing – review and editing

   For correspondence

   kai-hwang@uiowa.edu

   Competing interests

   No competing interests declared

   "This ORCID iD identifies the author of this article:" 0000-0002-1064-7815

2. James M Shine

   Brain and Mind Center, University of Sydney, Sydney, Australia

   Contribution

   Conceptualization, Methodology, Writing – review and editing

   Competing interests

   No competing interests declared

   "This ORCID iD identifies the author of this article:" 0000-0003-1762-5499

3. Michael W Cole

   Center for Molecular and Behavioral Neuroscience, Rutgers University-Newark, Newark, United States

   Contribution

   Software, Methodology, Writing – review and editing

   Competing interests

   No competing interests declared

   "This ORCID iD identifies the author of this article:" 0000-0003-4329-438X

4. Evan Sorenson

   1. Department of Psychological and Brain Sciences, University of Iowa, Iowa City, United States
   2. Cognitive Control Collaborative, University of Iowa, Iowa City, United States
   3. Department of Psychiatry, University of Iowa, Iowa City, United States

   Contribution

   Resources, Data curation, Software, Formal analysis, Investigation, Visualization, Methodology, Writing – review and editing

   Competing interests

   No competing interests declared

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