Dynamic Connectivity at Rest Predicts Attention Task Performance
| العنوان: | Dynamic Connectivity at Rest Predicts Attention Task Performance |
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| المؤلفون: | Tara M. Madhyastha, Mary K. Askren, Thomas J. Grabowski, Peter Boord |
| المصدر: | Brain Connectivity. 5:45-59 |
| بيانات النشر: | Mary Ann Liebert Inc, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Adult, Male, Nerve net, Attention task, Brain mapping, Developmental psychology, Task-positive network, Attention network, medicine, Humans, Task control, Attention, Default mode network, Aged, Dynamic functional connectivity, Aged, 80 and over, Brain Mapping, General Neuroscience, Brain, Parkinson Disease, Middle Aged, Magnetic Resonance Imaging, medicine.anatomical_structure, Female, Nerve Net, Special Issue on Dynamic ConnectivityPart 2Special Guest Editors: Daniele Marinazzo and Bharat BiswalOriginal Articles, Factor Analysis, Statistical, Psychology, Cognitive psychology |
| الوصف: | Consistent spatial patterns of coherent activity, representing large-scale networks, have been reliably identified in multiple populations. Most often, these studies have examined “stationary” connectivity. However, there is a growing recognition that there is a wealth of information in the time-varying dynamics of networks which has neural underpinnings, which changes with age and disease and that supports behavior. Using factor analysis of overlapping sliding windows across 25 participants with Parkinson disease (PD) and 21 controls (ages 41–86), we identify factors describing the covarying correlations of regions (dynamic connectivity) within attention networks and the default mode network, during two baseline resting-state and task runs. Cortical regions that support attention networks are affected early in PD, motivating the potential utility of dynamic connectivity as a sensitive way to characterize physiological disruption to these networks. We show that measures of dynamic connectivity are more reliable than comparable measures of stationary connectivity. Factors in the dorsal attention network (DAN) and fronto-parietal task control network, obtained at rest, are consistently related to the alerting and orienting reaction time effects in the subsequent Attention Network Task. In addition, the same relationship between the same DAN factor and the alerting effect was present during tasks. Although reliable, dynamic connectivity was not invariant, and changes between factor scores across sessions were related to changes in accuracy. In summary, patterns of time-varying correlations among nodes in an intrinsic network have a stability that has functional relevance. |
| تدمد: | 2158-0022 2158-0014 |
| DOI: | 10.1089/brain.2014.0248 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7062aa2dbc6696b8543c45738680956b https://doi.org/10.1089/brain.2014.0248 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....7062aa2dbc6696b8543c45738680956b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21580022 21580014 |
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| DOI: | 10.1089/brain.2014.0248 |