Independent Component Analysis for Source Localization of EEG Sleep Spindle Components

Table 1

Local maxima of LORETA current source density distributions for the original EEG, for the three parts (A, B, and C, resp.) into which the single-spindle timeframe was divided. The local maxima greater than or equal to 50% of the global maximum are shown (49% for the part C subtable). Coordinates are in mm. Origin at anterior commisure. For 𝑋, negative values represent left; positive values represent right. For 𝑌, negative values represent posterior; positive values represent anterior. For 𝑍, negative values represent inferior; positive values represent superior. Brodmann areas (BA) and both descriptions of the anatomical regions are shown.

Part A
Local maximum	Coordinates in Talairach space			Brodmann area (BA)	Anatomical region 1	Anatomical region 2	Activity (^∗10^−3 ) (𝜇A/mm^2)
	𝑋	𝑌	𝑍
1	4	−81	8	17	Cuneus	Occipital Lobe	15.96
2	−52	−67	8	39	Middle Temporal Gyrus	Temporal Lobe	13.14
3	−45	−67	15	39	Middle Temporal Gyrus	Temporal Lobe	13.14
4	46	−67	15	37	Middle Temporal Gyrus	Temporal Lobe	13.08
Part B
Local maximum	Coordinates in Talairach space			Brodmann area (BA)	Anatomical region 1	Anatomical region 2	Activity (^∗10^−3 ) (𝜇A/mm^2)
	𝑋	𝑌	𝑍
1	4	−81	8	17	Cuneus	Occipital Lobe	14.88
2	46	−67	8	37	Middle Temporal Gyrus	Temporal Lobe	12.32
3	−45	−67	15	39	Middle Temporal Gyrus	Temporal Lobe	12.20
4	−3	52	1	10	Anterior Cingulate	Limbic Lobe	7.80
5	53	3	−13	21	Middle Temporal Gyrus	Temporal Lobe	7.76
6	−59	−32	8	42	Superior Temporal Gyrus	Temporal Lobe	7.71
Part C
Local maximum	Coordinates in Talairach space			Brodmann area (BA)	Anatomical region 1	Anatomical region 2	Activity (^∗10^−3 ) (𝜇A/mm^2)
	𝑋	𝑌	𝑍
1	4	−81	8	17	Cuneus	Occipital Lobe	6.90
2	46	−67	8	37	Middle Temporal Gyrus	Temporal Lobe	6.17
3	−45	−67	15	39	Middle Temporal Gyrus	Temporal Lobe	6.00
4	−59	−32	8	42	Superior Temporal Gyrus	Temporal Lobe	3.52
5	−3	52	1	10	Anterior Cingulate	Limbic Lobe	3.44