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| 001 | 1014930 | ||
| 005 | 20231027114415.0 | ||
| 024 | 7 | _ | |a 10.1093/cercor/bhad273 |2 doi |
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| 100 | 1 | _ | |a Paas Oliveros, Lya K |0 P:(DE-Juel1)177822 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Brain functional characterization of response-code conflict in dual-tasking and its modulation by age |
| 260 | _ | _ | |a Oxford |c 2023 |b Oxford Univ. Press |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 500 | _ | _ | |a This study was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation, LA 3071/3-1, SFB 1451), the National Institute of Mental Health (R01-MH074457), the Helmholtz Portfolio Theme Supercomputing and Modeling for the Human Brain, and the European Union’s Horizon 2020 Research and Innovation Program under Grant Agreements 720270 (HBP SGA1), 785907 (HBP SGA2). |
| 520 | _ | _ | |a Crosstalk between conflicting response codes contributes to interference in dual-tasking, an effect exacerbated in advanced age. Here, we investigated (i) brain activity correlates of such response-code conflicts, (ii) activity modulations by individual dual-task performance and related cognitive abilities, (iii) task-modulated connectivity within the task network, and (iv) age-related differences in all these aspects. Young and older adults underwent fMRI while responding to the pitch of tones through spatially mapped speeded button presses with one or two hands concurrently. Using opposing stimulus–response mappings between hands, we induced conflict between simultaneously activated response codes. These response-code conflicts elicited activation in key regions of the multiple-demand network. While thalamic and parietal areas of the conflict-related network were modulated by attentional, working-memory and task-switching abilities, efficient conflict resolution in dual-tasking mainly relied on increasing supplementary motor activity. Older adults showed non-compensatory hyperactivity in left superior frontal gyrus, and higher right premotor activity was modulated by working-memory capacity. Finally, connectivity between premotor or parietal seed regions and the conflict-sensitive network was neither conflict-specific nor age-sensitive. Overall, resolving dual-task response-code conflict recruited substantial parts of the multiple-demand network, whose activity and coupling, however, were only little affected by individual differences in task performance or age. |
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| 773 | _ | _ | |a 10.1093/cercor/bhad273 |g p. bhad273 |0 PERI:(DE-600)1483485-6 |n 18 |p 10155–10180 |t Cerebral cortex |v 33 |y 2023 |x 1047-3211 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/1014930/files/E16293607.pdf |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/1014930/files/Paas_Brain_functioning_dual-tasking_aging_R1_FINAL.docx |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/1014930/files/Paas_Brain_functioning_dual-tasking_aging_SupplMat_R1_FINAL.docx |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/1014930/files/Paas_Brain_functioning_dual-tasking_aging_R1_FINAL%281%29.pdf |
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