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Related Experiment Video

Updated: Aug 10, 2025

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity

Published on: July 1, 2014

Pre- and post-task resting-state differs in clinical populations.

Cindy Sumaly Lor¹, Mengfan Zhang¹, Alexander Karner¹

¹Department of Cognition, Emotion, and Methods in Psychology, University of Vienna, Liebiggasse 5, 1010 Vienna, Austria; Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric University Hospital Zurich, University of Zurich, Lenggstrasse 31, 8032 Zürich, Switzerland.

Neuroimage. Clinical

|February 13, 2023

Summary

This summary is machine-generated.

Resting-state functional connectivity is influenced by prior emotion-inducing tasks in substance use disorders and phobias. These findings highlight the need to consider task effects when pooling resting-state data for clinical biomarker detection.

Keywords:

Clinical biomarkers Functional connectivity Nicotine addiction Pre-post changes Resting-state Specific phobia

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Area of Science:

Neuroimaging
Psychiatry
Clinical Neuroscience

Background:

Resting-state functional connectivity (rsFC) shows promise as a brain biomarker in psychiatry.
rsFC is suitable for large-scale studies due to its task-independent nature.
Heterogeneity in rsFC data arises from technical variability and differing analysis/acquisition protocols.

Purpose of the Study:

To investigate the impact of prior emotion-inducing tasks on rsFC in clinical populations.
To compare pre- vs. post-task rsFC in individuals with substance use disorders and phobias.
To address the knowledge gap regarding task-induced rsFC changes in clinical groups.

Main Methods:

Comparison of rsFC before and after viewing craving-inducing and spider-anxiety-provoking images.
Inclusion of participants with substance use disorders and phobias.
Analysis of resting-state functional connectivity patterns.

Main Results:

Distinct pre- vs. post-task rsFC differences were observed in both clinical groups.
Decreased thalamo-cortical connectivity was found in both groups.
Increased intra-thalamic connectivity was observed, potentially linked to reduced vigilance.

Conclusions:

Emotion-inducing tasks significantly influence resting-state measures in clinical populations.
rsFC data heterogeneity is exacerbated by preceding tasks.
Complete experimental design descriptions, including preceding tasks, are crucial for pooling rsFC data for biomarker discovery.