Table 1.

Classification results from anterior and posterior classified channels using spectral clustering and peak detection.

Classification results	S1		S2		S3		S4		S5		Average
	Ant.	Pst.	Ant.	Pst.	Ant.	Pst.	Ant.	Pst.	Ant.	Pst.	Ant.	Pst.
n (truth; Ant. or Pst.)	153	98	124	114	137	116	145	105	100	155	131.8	117.6
n (classified; Ant. or Pst.) spectral clustering	160	91	126	112	131	122	146	104	108	147	134.2	115.2
Accuracy spectral clustering	96.4%		96.6%		95.2%		97.2%		90.6%		95.2%
n (classified; Ant. or Pst.) peak detection	149	102	106	132	144	109	134	116	127	128	132	117.4
Accuracy peak detection	96.6%		92.6%		86.6%		94.3%		89.5%		91.9%

The table compares the channels as anterior or posterior to the central sulcus using the spectral clustering and peak detection method for five subjects. The number of ground truth channels for each subject is shown in row 1. The number of channels classified as anterior or posterior for each subject using spectral clustering and peak detection are given in rows 2 and 4, respectively. Rows 3 and 5 show the final classification accuracy with the average accuracy across all subjects in the last column.