Bidirectional signal exchanges and their mechanisms during joint attention interaction: a hyperscanning fMRI study
Social interactions are essential to our daily life. We tested the hypothesis that social interactions during joint attention (JA) require bidirectional communication, each with a different mechanism. We used a novel multivariate functional connectivity analysis, which enables obtaining directed pat...
Gespeichert in:
| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
18 May 2019
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| In: |
NeuroImage
Year: 2019, Jahrgang: 198, Pages: 242-254 |
| ISSN: | 1095-9572 |
| DOI: | 10.1016/j.neuroimage.2019.05.028 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1016/j.neuroimage.2019.05.028
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| Verfasserangaben: | Gadi Goelman, Rotem Dan, Gabriela Stößel, Heike Tost, Andreas Meyer-Lindenberg, Edda Bilek |
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| 520 | |a Social interactions are essential to our daily life. We tested the hypothesis that social interactions during joint attention (JA) require bidirectional communication, each with a different mechanism. We used a novel multivariate functional connectivity analysis, which enables obtaining directed pathways between four regions at each time-frequency point, with hyper-scanning MRI data of real-time JA interaction. Constructing multiple "4-regional directed pathways" and counting the number of times, regions engaged in feedforward or feedback processes in the 'sender' or the 'receiver brains, we obtained the following. (1) There were more regions in feedforward than in feedback processes (125 versus 99). (2) The right hemisphere was more involved in feedforward (74 versus 33), while the left hemisphere in feedback (66 versus 51). (3) The dmPFC was more engaged in feedforward (73 versus 44) while the TPJ in both (49 versus 45). (4) The dmPFC was more involved in the sending processes (i.e. initiation of feedforward and feedback) while the TPJ in the receiving processes. (5) JA interaction was involved with high MRI frequencies (0.04-0.1Hz), while continues interactions by low MRI frequencies (0.01-0.04Hz). (6) Initiation and responding to JA (i.e. IJA and RJA) evolved with composite neural systems: similar systems for pathways that included the dmPFC, vmPFC and the STS, and different systems for pathways that included the TPJ, vmPFC, PCC and the STS. These findings have important consequences in the basic understanding of social interaction and could help in diagnose and follow-up of social impairments. | ||
| 650 | 4 | |a Bidirectional flow | |
| 650 | 4 | |a Directed functional connectivity | |
| 650 | 4 | |a Hyperscanning | |
| 650 | 4 | |a Joint attention | |
| 650 | 4 | |a Multivariate analysis | |
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