Table 4 Correlations between ALFFs/ALFFs-difference with the four MET knowledge.

	AAL brain area	ALFFs	r_no	r_un	r_half	r_con
Eyes-closed	Frontal_Inf_Oper_R	0.88 ± 0.04	0.28*
Eyes-closed	Occipital_Sup_L	0.92 ± 0.08	− 0.27*
Eyes-closed	Fusiform_R	0.87 ± 0.03			− 0.30*	0.33*
Eyes-closed	SupraMarginal_L	0.89 ± 0.04				0.40**
Eyes-closed	Angular_L	1.03 ± 0.07		− 0.31*
Eyes-closed	Temporal_Inf_L	0.81 ± 0.04			− 0.29*
Eyes-open	Precentral_R	0.85 ± 0.05		0.27*
Eyes-open	Frontal_Sup_L	0.87 ± 0.05				0.26*
Eyes-open	Frontal_Mid_L	0.88 ± 0.05	− 0.26*
Eyes-open	Frontal_Mid_R	0.88 ± 0.04	− 0.26*	0.29*
Eyes-open	Frontal_Sup_Medial_R	0.94 ± 0.06		0.33*
Eyes-open	Occipital_Sup_L	0.92 ± 0.06	− 0.27*
Eyes-open	Fusiform_R	0.87 ± 0.03			− 0.26*
Eyes-open	Postcentral_R	0.84 ± 0.05			− 0.26*
Eyes-open	Parietal_Sup_R	0.94 ± 0.07	− 0.26*
Eyes-open	Parietal_Inf_L	0.99 ± 0.05				0.26*
Eyes-open	Parietal_Inf_R	1.06 ± 0.06				0.26*
Eyes-open	Cerebelum_Crus1_R	0.97 ± 0.10	0.30*
Eyes-open	Vermis_7	0.82 ± 0.06	0.28*
ALFFs-difference	Rolandic_Oper_L	0 ± 0.02				− 0.30*
ALFFs-difference	Insula_R	0.01 ± 0.02		0.30*
ALFFs-difference	Hippocampus_L	0.01 ± 0.03		0.29*
ALFFs-difference	Hippocampus_R	0.01 ± 0.02				− 0.28*
ALFFs-difference	ParaHippocampal_L	0.01 ± 0.06		0.26*
ALFFs-difference	SupraMarginal_L	0 ± 0.03	0.31*
ALFFs-difference	Caudate_L	0.01 ± 0.04		0.35**		− 0.31*
ALFFs-difference	Caudate_R	0.01 ± 0.03		0.28*
ALFFs-difference	Cerebelum_4_5_L	− 0.01 ± 0.05			− 0.28*
ALFFs-difference	Cerebelum_10_L	0.04 ± 0.21				− 0.27*
ALFFs-difference	Vermis_9	− 0.01 ± 0.09				− 0.28*

r_no is the correlation between ALFFs/ALFFs-difference and no-acquisition; r_un is the correlation between ALFFs/ALFFs-difference and uncontrollable knowledge; r_half is the correlation between ALFFs/ALFFs-difference and half-controllable knowledge; r_con is the correlation between ALFFs/ALFFs-difference and controllable knowledge.

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