105


Table 4-4 Mean Change Scores and Standard Deviations for
Facial EMG during the Shock Condition

 CEMG ZGL ZGR

 LHD .011 (.077) -.009 (.111) -.001 (.094)

 LH NCS .006 (.094) .015 (.076) -.005 (.107)

 RHD .031 (.175) .010 (.115) .013 (.100)

 RH NCS .008 (.102) .023 (.097) .013 (.107)

 There was, however, an interaction between group and

block for zygomatic left [F(9,132) = 2.45, P < .01]. The

ANOVA table, Table C-33, is presented in Appendix C. The

group by block interaction was further explored by examining

block differences separately for each group. The was a

significant difference between the groups for block 1

[F(3,44) = 3.054, P < .05], but not block 2 [F(3,44) =

1.657, P = .1901], block 3 [F(3,44) = 1.543, P =.2167], or

block 4 [F(3,44) = 1.743, P = .1720]. The results for block

analyses are provided in Tables C-34, C-35, C-36, and C-37.

 Further exploration of the main effect of group which

was significant in the analysis of block 1 was conducted

using independent t-tests with a Bonferroni correction.

Results of these analyses revealed that none of the groups

were significantly different from one another. These

results are depicted in Table C-38 of Appendix C. The means

and standard deviations are as follows: LHD patients (mean=-

.047, sd=.082), LH NCS (mean=.013, sd=.042), RH NCS

(mean=.025, sd=.060), RHD (mean=.020, sd=.076).