Abstract
This study was designed to examine the effect of the strength for presented stimulus on synchronous chanpes between anxiety responses. The strength of an electrical shock was employed as an experimental condition, that is, an electrical shock of 7mA was presented in strong(S) condition, and that of 3mA was in weak(W) one. Twenty four male undergraduates served as subjects, who received both conditions. Heart rate (HR) and subjective anxiety(SA) were measured as indeces of anxiety. As he restult of the analysis of cross correlation, synchrony between AS and HR level was observed in S condition, but synchrony between SA and HR !variability (HRV) ranged from 0.058 Hz to 0. 1Hz was in W.Regardless of the stimulus strength, however, relationship between SA and HRV ranged from O. 008Hz to 0. 05Hz remained constant. These results indicated that the analysis methods of HR affected synchronous level between anxiety responses.
