Journal
FRONTIERS IN PSYCHOLOGY
Volume 3, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpsyg.2012.00056
Keywords
prediction accuracy; classification; sequential dependencies; response bias; decision making; free will; frontal cortex
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Funding
- Medical Research Council [MC_G1001214] Funding Source: Medline
- ESRC [ES/E020933/1] Funding Source: UKRI
- MRC [MC_G1001214] Funding Source: UKRI
- Economic and Social Research Council [ES/E020933/1] Funding Source: researchfish
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In two replication studies we examined response bias and dependencies in voluntary decisions. We trained a linear classifier to predict spontaneous decisions and in the second study hidden intentions from responses in preceding trials and achieved comparable prediction accuracies as reported for multivariate pattern classification based on voxel activities in frontopolar cortex. We discuss implications of our findings and suggest ways to improve classification analyses of fMRI BOLD signals that may help to reduce effects of response dependencies between trials.
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