Table 5.

Correlation coefficients for intersession difference in diffusivity values for the genu of corpus callosum and sustained attention hit rate and reaction time.

	Hit rate nicotine patch	Hit rate placebo patch	ΔHit rate	Reaction time nicotine patch	Reaction time placebo patch	ΔReaction time
ΔL‖genu	0.01 (0.99)	−0.17 (0.30)	0.34 (0.05)*	0.28 (0.09)	−0.20 (0.23)	0.00 (1.0)
ΔL⊥genu	0.46 (0.004)**	0.37 (0.02)*	0.01 (0.99)	−0.23 (0.15)	−0.33 (0.20)	0.24 (0.15)

^*Nominally significant.

^**Only the correlation with hit rate during the nicotine patch session was considered statistically significant after correction for N = 12 comparisons.