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Related Experiment Video

Updated: May 30, 2026

Measuring Attentional Biases for Threat in Children and Adults

Measuring Attentional Biases for Threat in Children and Adults

Published on: October 19, 2014

Attention and the readiness for action.

Katharine S Baker¹, Jason B Mattingley, Christopher D Chambers

¹The University of Queensland, School of Psychology and Queensland Brain Institute, St. Lucia, QLD, Australia.

Neuropsychologia

|August 23, 2011

Summary

This summary is machine-generated.

Voluntary action preparation involves cognitive control mechanisms, similar to those used in working memory. This preparatory neural activity is reduced by high cognitive load, not perceptual load.

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Area of Science:

Neuroscience
Cognitive Psychology
Motor Control

Background:

Voluntary action initiation is preceded by significant preparatory neural activity (up to 2s) in premotor and supplementary motor regions.
The precise function of this pre-movement activity and its relationship with attention remain incompletely understood.

Purpose of the Study:

To investigate the specific cognitive processes underlying the preparatory period before voluntary action.
To determine whether pre-movement activity relies on general attentional resources or specific cognitive control mechanisms.

Main Methods:

Recorded electroencephalography (EEG) to measure readiness potentials during self-paced finger movements.
Manipulated cognitive load by introducing concurrent perceptual and working memory tasks to assess resource demands during action preparation.

Main Results:

Pre-movement readiness potentials were significantly reduced under high working memory load conditions.
Perceptual load tasks did not affect pre-movement activity, indicating a specific role for working memory-related resources.

Conclusions:

Movement preparatory processes engage cognitive control mechanisms shared with working memory.
Pre-movement neural activity reflects the endogenous orienting of attention in time, facilitated by cognitive control for voluntary action initiation.