Hughes, Gethin and Schütz-Bosbach, Simone and Waszak, Florian (2011) One Action System or Two? Evidence for Common Central Preparatory Mechanisms in Voluntary and Stimulus-Driven Actions. The Journal of Neuroscience, 31 (46). pp. 16692-16699. DOI https://doi.org/10.1523/jneurosci.2256-11.2011
Hughes, Gethin and Schütz-Bosbach, Simone and Waszak, Florian (2011) One Action System or Two? Evidence for Common Central Preparatory Mechanisms in Voluntary and Stimulus-Driven Actions. The Journal of Neuroscience, 31 (46). pp. 16692-16699. DOI https://doi.org/10.1523/jneurosci.2256-11.2011
Hughes, Gethin and Schütz-Bosbach, Simone and Waszak, Florian (2011) One Action System or Two? Evidence for Common Central Preparatory Mechanisms in Voluntary and Stimulus-Driven Actions. The Journal of Neuroscience, 31 (46). pp. 16692-16699. DOI https://doi.org/10.1523/jneurosci.2256-11.2011
Abstract
<jats:p>Human behavior is comprised of an interaction between intentionally driven actions and reactions to changes in the environment. Existing data are equivocal concerning the question of whether these two action systems are independent, involve different brain regions, or overlap. To address this question we investigated whether the degree to which the voluntary action system is activated at the time of stimulus onset predicts reaction times to external stimuli. We recorded event-related potentials while participants prepared and executed left- or right-hand voluntary actions, which were occasionally interrupted by a stimulus requiring either a left- or right-hand response. In trials where participants successfully performed the stimulus-driven response, increased voluntary motor preparation was associated with faster responses on congruent trials (where participants were preparing a voluntary action with the same hand that was then required by the target stimulus), and slower responses on incongruent trials. This suggests that early hand-specific activity in medial frontal cortex for voluntary action trials can be used by the stimulus-driven system to speed responding. This finding questions the clear distinction between voluntary and stimulus-driven action systems.</jats:p>
Item Type: | Article |
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Uncontrolled Keywords: | Brain; Humans; Electroencephalography; Brain Mapping; Photic Stimulation; Intention; Attention; Reaction Time; Evoked Potentials; Movement; Visual Fields; Time Factors; Adult; Female; Male; Functional Laterality; Young Adult |
Subjects: | B Philosophy. Psychology. Religion > BF Psychology |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Psychology, Department of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 16 Jan 2013 10:14 |
Last Modified: | 10 Dec 2024 07:56 |
URI: | http://repository.essex.ac.uk/id/eprint/5050 |
Available files
Filename: 16692.full.pdf