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Updated: May 21, 2026

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance

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Published on: May 7, 2014

Functional network connectivity during rest and task conditions: a comparative study.

Mohammad R Arbabshirani¹, Martin Havlicek, Kent A Kiehl

¹The Mind Research Network, Albuquerque, New Mexico; Department of ECE, University of New Mexico, Albuquerque, New Mexico.

Human Brain Mapping

|June 28, 2012

Summary

This summary is machine-generated.

Functional network connectivity (FNC) decreases during auditory oddball tasks. Brain networks show increased activity and size, suggesting task performance relies on focused neural recruitment rather than broad network collaboration.

Keywords:

fMRI functional network connectivity independent component analysis

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Area of Science:

Neuroscience
Cognitive Neuroscience
Brain Imaging

Background:

Functional connectivity (FC) analyzes statistical dependencies between brain regions.
Functional network connectivity (FNC) extends FC to assess network-level interactions using Independent Component Analysis (ICA).
Understanding FNC dynamics is crucial for elucidating brain function during cognitive tasks.

Purpose of the Study:

To compare FNC in resting state versus during an auditory oddball (AOD) task.
To investigate how brain networks reconfigure during task performance.
To evaluate the impact of temporal filtering on FNC analysis.

Main Methods:

Utilized spatial Independent Component Analysis (ICA) to identify brain networks.
Calculated FNC by analyzing statistical dependencies between ICA time-courses.
Compared FNC metrics between resting-state and AOD task conditions in 28 healthy subjects.

Main Results:

A global decrease in FNC was observed during the AOD task compared to rest.
Specific brain networks exhibited increased size and/or activity during the task.
Temporal filtering did not significantly impact the FNC analysis results.

Conclusions:

Task performance, like the AOD task, may be supported by enhanced recruitment and activation within specific networks.
Brain network dynamics shift during active cognitive tasks, favoring focused activation over inter-network collaboration.
FNC analysis is robust to temporal filtering, supporting its use in neuroimaging studies.