Figure 3 : Recovery from physical (cold pressor test) and psychological (Stroop test) stimuli of HF amplitude in each group.

Closed square: in subjects with gastrointestinal symptoms (GI subjects), open circle: in controls. Repeated measures ANOVA showed no significant group×time course interaction in recovery from the physical stimulus, but significant group×time course interaction in recovery from the
psychological stimulus (F(2,32)=4.678, p=0.0165).

Sokichi Sakuragi Journal of Psychiatry and Brain Functions  2015 2:5DOI : 10.7243/2055-3447-2-5