The relationship between electrophysiological and hemodynamic measures of neural activity varies across picture naming tasks: A multimodal magnetoencephalography-functional magnetic resonance imaging study

Tommi Mononen*, Jan Kujala, Mia Liljeström, Eemeli Leppäaho, Samuel Kaski, Riitta Salmelin

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

72 Downloads (Pure)

Abstract

Different neuroimaging methods can yield different views of task-dependent neural engagement. Studies examining the relationship between electromagnetic and hemodynamic measures have revealed correlated patterns across brain regions but the role of the applied stimulation or experimental tasks in these correlation patterns is still poorly understood. Here, we evaluated the across-tasks variability of MEG-fMRI relationship using data recorded during three distinct naming tasks (naming objects and actions from action images, and objects from object images), from the same set of participants. Our results demonstrate that the MEG-fMRI correlation pattern varies according to the performed task, and that this variability shows distinct spectral profiles across brain regions. Notably, analysis of the MEG data alone did not reveal modulations across the examined tasks in the time-frequency windows emerging from the MEG-fMRI correlation analysis. Our results suggest that the electromagnetic-hemodynamic correlation could serve as a more sensitive proxy for task-dependent neural engagement in cognitive tasks than isolated within-modality measures.

Original languageEnglish
Article number1019572
Pages (from-to)1-16
Number of pages16
JournalFrontiers in Neuroscience
Volume16
DOIs
Publication statusPublished - 3 Nov 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • clustering
  • correlation patterns
  • data fusion
  • fMRI
  • MEG
  • multimodal data
  • picture naming

Fingerprint

Dive into the research topics of 'The relationship between electrophysiological and hemodynamic measures of neural activity varies across picture naming tasks: A multimodal magnetoencephalography-functional magnetic resonance imaging study'. Together they form a unique fingerprint.

Cite this