Using Partial Directed Coherence to Study Alpha-Band Effective Brain Networks during a Visuospatial Attention Task

Table 1

Comparisons of the graph measures between target and nontarget condition based on a sparsity method.

Graph measures	Target ()	Nontarget ()	Statistical analysis
					Partial
			8.400	0.007	0.231
			13.396	0.001	0.324
			13.176	0.001	0.320
			0.594	0.447	0.021
			1.156	0.292	0.040

Notes: values are expressed as ; stands for clustering coefficient; stands for characteristic path length; represents global efficiency; represents local efficiency; stands for small-world index; significant differences () between two conditions are highlighted in bold.