203 Table C-31 ANOVA Table of Corrugator EMG during the Shock Task SS DF MS F SIG of F Group . 038 3 . 013 .287 . 8349 Subject(Group) 1.948 44 . 044 Block .004 3 . 001 . 127 . 9438 Block by Group . 032 9 . 003 .356 .9536 Block by Subject(Group) 1.31 132 . 010 Tone . 013 1 . 013 1.246 . 2703 Tone by Group .015 3 .005 .467 .7071 Tone by Subject(Group) .457 44 . 010 Block by Tone .020 3 .007 .627 .5989 Block by Tone by Group . 110 9 . 012 1.157 .3276 Block by Tone by Subject(Group) 1.390 132 . Oil