. Author manuscript; available in PMC: 2006 Feb 9.

Published in final edited form as: Br J Anaesth. 2004 Jun 25;93(2):228–234. doi: 10.1093/bja/aeh192

Table 4.

Correlations between Brainstem Auditory Evoked Potentials (BAEP), Sensory Block Level and Bispectral Index (BIS).

Brainstem AEP	VRS (0-10)	Block_t Level	Block_p Level	BIS
I Lat	0.079	0.110	0.124	0.036
III Lat	0.335^*	0.394^*	0.360^*	-0.079
V Lat	0.194	0.273	0.289	-0.031
I-III IPL	0.122	0.179	0.138	-0.133
III-V IPL	0.016	0.061	0.138	-0.008
I-V IPL	0.079	0.189	0.104	-0.022
I Amp	-0.013	0.038	0.189	0.096
V Amp	0.045	0.063	0.043	0.002

Spearman's rank correlations were first calculated for each volunteer separately and then averaged across all volunteers. One-sample t-test was used to determine which of the average correlations were significantly different from zero; P < 0.01 was considered significant and is denoted by an asterisk (*).