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Practical Methodology of Cognitive Tasks Within a Navigational Assessment

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Published on: June 1, 2015

The prestimulus default mode network state predicts cognitive task performance levels on a mental rotation task.

Tabea Kamp^1,2, Bettina Sorger^1,2, Caroline Benjamins^1,2

¹Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands.

Brain and Behavior

|June 24, 2018

Summary

This summary is machine-generated.

Prestimulus default mode network (DMN) states influence cognitive task performance. Lower DMN activation predicted faster correct responses, while higher DMN connectivity correlated with incorrect trials, impacting both speed and accuracy.

Keywords:

cognitive task performance default mode network mental rotation task prestimulus activation prestimulus connectivity

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Area of Science:

Neuroscience
Cognitive Psychology
Neuroimaging

Background:

Linking brain activity before a task to performance is a key neuroscience goal.
Prestimulus activity in the default mode network (DMN) affects task performance.
The DMN's influence on cognitive tasks with flexible trial timing remains unclear.

Purpose of the Study:

To investigate if prestimulus DMN activation and connectivity predict cognitive task performance.
To examine the impact on both correctness and speed in a mental rotation task.

Main Methods:

Used sparse event-related fMRI design.
Analyzed prestimulus DMN activation and within-network connectivity.
Assessed performance on a match-to-sample mental rotation task.

Main Results:

Lower prestimulus DMN activation predicted faster correct trials.
Higher within-DMN connectivity before trials correlated with incorrect responses.
DMN states influenced both accuracy and response speed.

Conclusions:

Pre-DMN states significantly impact cognitive task execution.
Findings support theories linking mind-wandering and DMN activity to performance.
Establishes a link between prestimulus DMN state and cognitive task speed.