Table 4.

Correlations between NIRS parameters and cognitive function.

	Peak OxyHb		Time to the peak OxyHb		Area under the NIRS curve		Reaction time
	r	p	r	p	r	p	r	p
0-back task
% corrects	−0.108	0.622	−0.055	0.804	0.139	0.536	−0.134	0.543
Reaction time	−0.099	0.654	−0.293	0.175	−0.141	0.531	−0.424	0.044*
1-back task
% corrects	0.368	0.084	0.210	0.336	0.407	0.060	0.401	0.058
Reaction time	−0.331	0.123	−0.291	0.179	−0.344	0.117	−0.396	0.062
2-back task
% corrects	0.194	0.376	0.254	0.243	0.131	0.561	0.036	0.872
Reaction time	−0.260	0.231	−0.134	0.541	−0.135	0.550	−0.156	0.476
WCST
Category achievement	−0.161	0.462	0.217	0.319	−0.186	0.408	−0.180	0.411
Total errors	0.014	0.949	−0.175	0.425	−0.040	0.860	0.059	0.788
CPT-IP
% corrects	0.466	0.025*	−0.127	0.564	0.367	0.093	0.084	0.705
d prime	0.301	0.162	−0.169	0.440	0.183	0.415	0.083	0.708

Abbreviations: CPT-IP = Continuous Performance Test–Identical Pairs; NIRS = near-infrared spectroscopy; OxyHb = oxyhemoglobin; WCST = Wisconsin Card Sorting Test.

^⁎p < 0.05.