Heart Rate Variability (HRV) reflecting from oral reports of negative experience

We measured HRV in 25 females while they were evaluating and reporting 48 affective pictures, which appeared on the screen for 20 s in random order. After reporting the SAM, the participant orally reported to the experimenter, what she saw, what had happened, and what was going to happen in the picture. Spectral analysis was performed on the data using the fast Fourier transform. Preliminary results indicate that during negative pictures, LF/HF activity is significantly higher in the picture phase than in the speech phase.