ArticleScientific reports2015
Granger causal time-dependent source connectivity in the somatosensory network.
Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Time-variant Granger causality analysis for intuitive perception collision risk in driving scenario: an EEG study.Frontiers in neuroscience · 2025Article
- Spatiotemporal dynamics of cortical somatosensory network in typically developing children.Cerebral cortex (New York, N.Y. : 1991) · 2024Article
- Bibliometric Analysis of Granger Causality Studies.Entropy (Basel, Switzerland) · 2023Article
- Improving the Process of Early-Warning Detection and Identifying the Most Affected Markets: Evidence from Subprime Mortgage Crisis and COVID-19 Outbreak-Application to American Stock Markets.Entropy (Basel, Switzerland) · 2022Article
- Aberrant somatosensory phase synchronization in children with hemiplegic cerebral palsy.Neuroscience letters · 2021Article
- Dynamic visual cortical connectivity analysis based on functional magnetic resonance imaging.Brain and behavior · 2020Article
- Granger causality analysis of rat cortical functional connectivity in pain.Journal of neural engineering · 2020Article
- Somatosensory evoked fields predict response to vagus nerve stimulation.NeuroImage. Clinical · 2020Article
- Quantitative assessment of cerebral connectivity deficiency and cognitive impairment in children with prenatal alcohol exposure.Chaos (Woodbury, N.Y.) · 2019Article
- Imaging human cortical responses to intraneural microstimulation using magnetoencephalography.NeuroImage · 2019Article
- A Time-Varying Connectivity Analysis from Distributed EEG Sources: A Simulation Study.Brain topography · 2018Article
- A lateralized functional auditory network is involved in anuran sexual selection.Journal of biosciences · 2016Article
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9 authors.
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Abstract
Exploration of transient Granger causal interactions in neural sources of electrophysiological activities provides deeper insights into brain information processing mechanisms. However, the underlying neural patterns are confounded by time-dependent dynamics, non-stationarity and observational noise contamination. Here we investigate transient Granger causal interactions using source time-series of somatosensory evoked magnetoencephalographic (MEG) elicited by air puff stimulation of right index finger and recorded using 306-channel MEG from 21 healthy subjects. A new time-varying connectivity approach, combining renormalised partial directed coherence with state space modelling, is employed to estimate fast changing information flow among the sources. Source analysis confirmed that somatosensory evoked MEG was mainly generated from the contralateral primary somatosensory cortex (SI) and bilateral secondary somatosensory cortices (SII). Transient Granger causality shows a serial processing of somatosensory information, 1) from contralateral SI to contralateral SII, 2) from contralateral SI to ipsilateral SII, 3) from contralateral SII to contralateral SI, and 4) from contralateral SII to ipsilateral SII. These results are consistent with established anatomical connectivity between somatosensory regions and previous source modeling results, thereby providing empirical validation of the time-varying connectivity analysis. We argue that the suggested approach provides novel information regarding transient cortical dynamic connectivity, which previous approaches could not assess.
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