D. A. Allport, E. A. Styles, and S. Hsieh, Shifting intentional set: exploring the dynamic control of tasks, pp.421-452, 1994.

M. Brass and D. Y. Von-cramon, Decomposing components of task preparation with functional magnetic resonance imaging, J. Cogn. Neurosci, vol.16, pp.609-620, 2004.

T. S. Braver, J. R. Reynolds, and D. I. Donaldson, Neural mechanisms of transient and sustained cognitive control during task switching, Neuron, vol.39, pp.713-726, 2003.

C. Chang and C. Lin, LIBSVM: a library of support vector machines, ACM Trans. Intell. Sys. Tech, vol.2, pp.1-27, 2011.

J. R. Cohen, R. F. Asarnow, F. W. Sabb, R. M. Bilder, S. Y. Bookheimer et al., Decoding developmental differences and individual variability in response inhibition through predictive analysis across individuals, Front. Hum. Neurosci, vol.4, p.47, 2010.

N. J. Cohen and L. R. Squire, Preserved learning and retention of patternanalyzing skill in amnesia: dissociation of knowing how and knowing that, Science, vol.210, pp.207-210, 1980.

E. A. Crone, C. Wendelken, S. E. Donohue, and S. A. Bunge, Neural evidence for dissociable components of task-switching, Cereb. Cortex, vol.16, pp.475-486, 2006.

A. M. Dale, Optimal experimental design for event-related fMRI, Hum. Brain Mapp, vol.8, pp.109-114, 1999.

T. Davis, K. F. Larocque, J. A. Mumford, K. A. Norman, A. D. Wagner et al., What do differences between multi-voxel and univariate analyses mean? How subject-, voxel-, and trial-level variance impact fMRI analyses, NeuroImage, 2014.

E. Dayan and L. G. Cohen, Neuroprasticity subserving motor skill learning, Neuron, vol.72, pp.443-544, 2011.

J. Derrfuss, M. Brass, and D. Y. Von-cramon, Cognitive control in the posterior frontolateral cortex: evidence from common activations in task coordination, interference control, and working memory, Neuroimage, vol.23, pp.604-612, 2004.

A. Dove, S. Pollmann, T. Schubert, C. J. Wiggins, and D. Y. Von-cramon, Prefrontal cortex activation in task switching: an event-related fMRI study, Cogn. Brain Res, vol.9, pp.103-109, 2000.

M. J. Frank, C. , and E. D. , Anatomy of decision: striato-orbitofrontal interaction in reinforcement learning, decision making, and reversal, Psychol. Rev, vol.113, pp.300-326, 2006.

P. Gupta and N. J. Cohen, Theoretical and computational analysis of skill learning, repetition priming, and procedural memory, Psychol. Rev, vol.109, pp.401-408, 2002.

M. Hanke, Y. O. Halchenko, P. B. Sederberg, S. J. Hanson, J. V. Haxby et al., Switching from automatic to controlled behavior: cortico-basal ganglia mechanisms, Trends. Cogn. Sci, vol.7, pp.154-161, 2009.

W. James, Principles of Psychology, 1890.

A. T. Jersild, Mental set and shift, Arch. Psychol, vol.89, pp.5-82, 1927.

K. Jimura and T. S. Braver, Age-related shifts in brain activity dynamics during task switching, Cereb. Cortex, vol.20, pp.1420-1431, 2009.

, Frontiers in Human Neuroscience www.frontiersin.org

K. Jimura and R. A. Poldrack, Analyses of regional-average activation and multivoxel pattern information tell complementary stories, Neuropsychologia, vol.50, pp.544-552, 2012.

B. Jones and M. Mishkin, Limbic lesions and the problem of stimulusreinforcement association, Exp. Neurol, vol.36, pp.90030-90031, 1972.

A. M. Kelley, R. Hester, J. J. Foxe, M. Shpaner, and H. Garavan, Flexible cognitive control: effects of individual difference and brief practice on a complex cognitive task, Neuroimage, vol.31, pp.866-886, 2006.

C. Kim, S. E. Cilles, N. F. Johnson, and B. T. Gold, Domain general and domain preferential brain regions associated with different types of task switching: a meta-analysis, Hum. Brain Mapp, vol.33, pp.130-142, 2012.

C. Kim, N. F. Johnson, S. E. Cilles, and B. T. Gold, Common and distinct mechanisms of cognitive flexibility in prefrontal cortex, J. Neurosci, vol.31, pp.4771-4779, 2011.

D. Y. Kimberg, G. K. Aguirre, and M. Esposito, Modulation of taskrelated neural activity in task-switching: an fMRI study, Brain Res. Cogn. Brain Res, vol.10, pp.189-196, 2000.

E. Koechlin, C. Ody, and F. Kouneiher, The architecture of cognitive control in the human prefrontal cortex, Science, vol.302, pp.1181-1185, 2003.

P. A. Kolers, The recognition of geometrically transformed text, Percept. Psychophys, vol.3, pp.57-64, 1968.

A. W. Macdonald, J. D. Cohen, V. A. Stenger, and C. S. Carter, Dissociating the role of the dorsolateral prefrontal and anterior cingulate cortex in cognitive control, Science, vol.288, pp.1835-1838, 2000.

M. Martone, N. Butters, M. Payne, J. T. Becker, and D. S. Sax, Dissociation between skill learning and verbal recognition in amnesia and dementia, Arch. Neurol, vol.41, pp.965-970, 1984.

M. P. Milham, M. T. Banich, E. D. Claus, and N. J. Cohen, Practice-related effects demonstrate complementary roles of anterior cingulate and prefrontal cortices in attentional control, Neuroimage, vol.18, pp.50-52, 2003.

E. K. Miller and J. E. Cohen, An integrative theory of prefrontal cortex function, Annu. Rev. Neurosci, vol.24, pp.167-202, 2001.

B. Milner, Effect of different brain legions on card sorting, Arch. Neurol, vol.9, pp.90-100, 1963.

M. Misaki, Y. Kim, P. A. Bandettini, and N. Kriegeskorte, Comparison of multivariate classifiers and response normalizations for pattern-information fMRI, Neuroimage, vol.53, pp.103-118, 2010.

T. Nichols, M. Brett, J. Andersson, T. Wager, and J. Pline, Valid conjunction inference with the minimum statistic, NeuroImage, vol.25, pp.653-660, 2005.

T. E. Nichols and A. P. Holmes, Nonparametric permutation tests for functional neuroimaging: a primer with examples, Hum. Brain Mapp, vol.15, pp.1-25, 2002.

F. Pegado, K. Nakamura, L. Cohen, and S. Dehaene, Breaking the symmetry: mirror discrimination for single letters but not for pictures in the visual word form area, Neuroimage, vol.55, pp.742-749, 2011.

S. E. Petersen, H. Van-mier, J. A. Fiez, and M. E. Raichle, The effect of practice on the functional anatomy of task performance, Proc. Natl. Acad. U.S.A. 95, pp.853-860, 1998.

R. A. Poldrack, J. E. Desmond, G. H. Glover, and J. D. Gabrieli, The neural basis of visual skill learning: an fMRI study of mirror reading, Cereb. Cortex, vol.8, pp.1-10, 1998.

R. A. Poldrack and J. D. Gabrieli, Characterizing the neural mechanisms of skill learning and repetition priming: evidence from mirror reading, Brain, vol.124, pp.67-82, 2001.

H. L. Roediger and . Iii, Implicit memory: retention without rembering, Am. Psychol, vol.45, pp.1043-1056, 1990.

R. D. Rogers and S. Monsell, Const of a predictable switch between simple cognitive tasks, J. Exp. Psychol. Gen, vol.124, pp.207-231, 1995.

M. F. Rushworth, R. E. Passingham, and A. C. Nobre, Components of switching intentional set, J. Cogn. Neurosci, vol.14, pp.1139-1150, 2002.

K. Sakai and R. E. Passingham, Prefrontal interactions reflect future task operations, Nat. Neurosci, vol.6, pp.75-81, 2003.

K. Sakai and R. E. Passingham, Prefrontal set activity predicts rule specific neural processing during subsequent cognitive performance, J. Neurosci, vol.26, pp.1211-1218, 2006.

D. P. Salmon and N. Butters, Neurobiology of skill and habit learning, Curr. Opin. Neurobiol, vol.5, pp.80025-80030, 1995.

D. L. Schacter, C. P. Chiu, and K. N. Ochsner, Implicit memory: a selective review, Annu. Rev. Neurosci, vol.16, pp.159-182, 1993.

E. E. Smith, J. , and J. , Storage and executive process in the frontal lobes, Science, vol.283, pp.1657-1661, 1999.

C. Stelzel, U. Basten, C. Montag, M. Reuter, and C. J. Fiebach, Frontostriatal involvement in task switching depends on genetic differences in d2 receptor density, J. Neurosci, vol.30, pp.14205-14212, 2010.

N. Yeung and S. Monsell, The effect of recent practice on task switching, J. Exp. Psychol. Hum Percept. Perform, vol.29, pp.919-936, 2003.

N. Yeung, L. E. Nystrom, J. A. Aronson, and J. D. Cohen, Between-task competition and cognitive control in task switching, J. Neurosci, vol.26, pp.1429-1438, 2006.

, Conflict of Interest Statement: The authors declare that the research was con