How predictable are spontaneous decisions and hidden intentions? Comparing classification analyses based on previous responses and fMRI BOLD signals.
In two replication studies we examined response bias and sequential dependencies in binary decisions. We applied a linear classifier (SVM) to predict spontaneous decisions as well as hidden intentions from responses in preceding trials and achieve similar prediction accuracies as multivariate patter...
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doaj-960f184d037649278e658b3f982abee92020-11-25T01:09:04ZengFrontiers Media S.A.Frontiers in Psychology1664-10782012-03-01310.3389/fpsyg.2012.0005618888How predictable are spontaneous decisions and hidden intentions? Comparing classification analyses based on previous responses and fMRI BOLD signals.Martin eLages0Katarzyna eJaworska1University of GlasgowUniversity of GlasgowIn two replication studies we examined response bias and sequential dependencies in binary decisions. We applied a linear classifier (SVM) to predict spontaneous decisions as well as hidden intentions from responses in preceding trials and achieve similar prediction accuracies as multivariate pattern classification of voxel activities in frontopolar cortex. We discuss implications of our findings and suggest a simple way to improve analyses of fMRI BOLD signals to contain effects of sequential dependencies between trials.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2012.00056/fullDecision MakingPrefrontal CortexResponse biasfree willfMRI BOLD signalmultivariate classification analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Martin eLages Katarzyna eJaworska |
spellingShingle |
Martin eLages Katarzyna eJaworska How predictable are spontaneous decisions and hidden intentions? Comparing classification analyses based on previous responses and fMRI BOLD signals. Frontiers in Psychology Decision Making Prefrontal Cortex Response bias free will fMRI BOLD signal multivariate classification analysis |
author_facet |
Martin eLages Katarzyna eJaworska |
author_sort |
Martin eLages |
title |
How predictable are spontaneous decisions and hidden intentions? Comparing classification analyses based on previous responses and fMRI BOLD signals. |
title_short |
How predictable are spontaneous decisions and hidden intentions? Comparing classification analyses based on previous responses and fMRI BOLD signals. |
title_full |
How predictable are spontaneous decisions and hidden intentions? Comparing classification analyses based on previous responses and fMRI BOLD signals. |
title_fullStr |
How predictable are spontaneous decisions and hidden intentions? Comparing classification analyses based on previous responses and fMRI BOLD signals. |
title_full_unstemmed |
How predictable are spontaneous decisions and hidden intentions? Comparing classification analyses based on previous responses and fMRI BOLD signals. |
title_sort |
how predictable are spontaneous decisions and hidden intentions? comparing classification analyses based on previous responses and fmri bold signals. |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Psychology |
issn |
1664-1078 |
publishDate |
2012-03-01 |
description |
In two replication studies we examined response bias and sequential dependencies in binary decisions. We applied a linear classifier (SVM) to predict spontaneous decisions as well as hidden intentions from responses in preceding trials and achieve similar prediction accuracies as multivariate pattern classification of voxel activities in frontopolar cortex. We discuss implications of our findings and suggest a simple way to improve analyses of fMRI BOLD signals to contain effects of sequential dependencies between trials. |
topic |
Decision Making Prefrontal Cortex Response bias free will fMRI BOLD signal multivariate classification analysis |
url |
http://journal.frontiersin.org/Journal/10.3389/fpsyg.2012.00056/full |
work_keys_str_mv |
AT martinelages howpredictablearespontaneousdecisionsandhiddenintentionscomparingclassificationanalysesbasedonpreviousresponsesandfmriboldsignals AT katarzynaejaworska howpredictablearespontaneousdecisionsandhiddenintentionscomparingclassificationanalysesbasedonpreviousresponsesandfmriboldsignals |
_version_ |
1725180142575157248 |