Funct Neurol
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The influence of sex and anxiety on experimental pain perception was studied in a homogeneous population of 50 volunteer and healthy dental students. Three threshold (minimum perceptible threshold, pain threshold and pain tolerance threshold) were determined by delivering electrical stimulations, at regular intervals, on the left hand finger pads. ⋯ Statistical analysis of the results showed a lower pain tolerance threshold in females than in males and a significant correlation between the anxiety score and the pain tolerance threshold. The fact that females are more anxious than males could explain these results.
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The heart rate variability is defined as variation in distance between sequential ventricular complexes in the electrocardiogram and can be given in percent by referring the standard deviation to the average values of heart rate. The bivariate distribution of heart rate variability and of heart rate shows a discrimination of the group of comatose patients from brain dead subjects and normals.