Table 5. Brain regions associated with training (Pre<Post or Post<Pre).

Activated areas (Brodmann area)	Cluster size	x	y	z	t-value
SINGLE REPEATED training
Single-task alphabetical equation Pre>post
Right inferior and middle frontal gyrus (46,9,10,45)	315	33	8	35	5.91
Left thalamus	96	−9	−31	8	5.37
Left middle frontal (9)	21	−36	14	32	4.57
DIVIDED FIXED training
Single-task visual detection Pre>Post
Rignt cerebellum	11	3	−79	−25	4.73
Right middle occipital gyrus (37,18,19)	34	33	−82	−1	4.68
Dual-task 50% Equation Post>Pre
Left middle frontal gyrus (11,47)	13	−27	32	−16	4.52
Right superior and middle frontal gyrus (11)	16	27	35	−16	4.41
DIVIDED VARIABLE training
Dual-task 80% Equation Post>Pre
Right cerebellum	15	42	−76	−28	4.79
Dual-task 50% Equation Post>Pre
Right superior and middle frontal gyrus (10)	12	27	56	23	4.78
Dual-task 20% Equation Post>Pre
Right superior and middle frontal gyrus (10)	30	30	56	20	5.35

P<0.001 uncorrected, K = 10.