Shock task

 As mentioned above, subjects received the shock in the

 forearm ipsilateral to their lesions. Additionally, RH NCS

 and LH NCS received the shock on their right and left arms

 respectively. Subjects were asked to determine the level of

 shock that was "uncomfortable, but not painful." The level

 of shock chosen by the subjects was examined using a 1

 factor ANOVA with group (LHD, LH NCS, RHD, RH NCS) as the

 between subject factor. There were no group differences in

 the voltage of shock chosen [F(3,44) = 1.79, P = .1622].

 The means and standard deviations for each group in volts

 are as follows: LHD group (mean=68.75, sd=14.79), LH NCS

 (mean=57.08, sd=12.70), RHD group (mean=64.17, sd=12.58), RH

 NCS (mean=64.58, 9.40). The ANOVA table is presented below.


 Table 4-1 ANOVA Table of Amount of Shock

 SS DF MS F Sig
 of F

 Group 843.229 3 281.07 1.79 .1622

 Residual 6893.750 44 156.67


 Heart rate. A series of separate analyses were

conducted to examine several heart rate variables. These

included overall heart rate change from baseline, D1 (the

greatest deceleration within the first 3-seconds after tone

offset), Al (the greatest acceleration following D1 within

the 6-second period), and D2 (the greatest deceleration