Table 1.

Information about the ROIs included in this study.

ROI	Abbreviation	Size (2×2×2 mm voxels)	Reason to be included	References
Putamen	PUT	3,939	COVIS: Response learning and selection	Ashby, Ennis & Spiering, 2007
Body and Tail of Caudate	CD-bt	1,330	COVIS: Response learning and selection	Ashby et al., 1998; Ashby, Paul & Maddox, 2011
Head of the Caudate	CD-hd	2,063	COVIS: Rule switching	Ashby et al., 1998; Ashby, Paul & Maddox, 2011
Globus Pallidus	GP	2,337	COVIS: Response selection and rule switching	Ashby et al., 2005; Ashby, Ennis & Spiering, 2007
Motor Thalamus	va/vlTH	2,870	COVIS: Response selection	Ashby, Ennis & Spiering, 2007
Frontal Thalamus	mdTH	4,127	COVIS: Rule maintenance in working memory	Ashby et al., 2005
Primary Motor	M1	29,115	Motor movement control	Dum & Strick, 2005
Dorsal Premotor	dPM	15,460	SPEED: Motor representations	Ashby, Ennis & Spiering, 2007
Ventral Premotor	vPM	4,215	SPEED: Motor representations	Ashby, Ennis & Spiering, 2007
Supplementary Motor	SMA	3,752	SPEED: Motor representations	Ashby, Ennis & Spiering, 2007
Posterior ACC	pACC	2,143	SPEED: Motor representations	Ashby, Ennis & Spiering, 2007
Primary Visual	V1	16,378	Visual input to cortex	Chalupa & Werner, 2004
Extrastriate Cortex	ESC	22,607	COVIS: Visual representations	Ashby et al., 1998
Inferotemporal Cortex	IT	16,610	COVIS: Visual representations	Ashby et al., 1998
Ventrolateral PFC	vlPFC	12,510	COVIS: Rule maintenance in working memory	Ashby et al., 2005
Dorsolateral PFC	dlPFC	21,990	Evidence of rule representations	Muhammad, Wallis Miller, 2006; Seger & Cincotta, 2006
Medial ACC	mACC	2,485	COVIS: Rule selection	Ashby et al., 1998, 2005
Pre SMA	pre-SMA	2,218	Possible role in switching between systems	Ashby & Crossley, 2010b; Hikosaka & Isoda, 2010
Hippocampus	HPC	5,837	COVIS: Rule storage	Ashby, Paul & Maddox, 2011