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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Psychophysiology. 2011 Aug 31;49(1):111–117. doi: 10.1111/j.1469-8986.2011.01285.x

Table II.

Summary statistics for experimental variables

Baseline Erotic Percent change
M SD M SD M SD
SDNN (ms) 59.5 22.8 52.6 19.8 −8.6 21.7
pNN50 (%) 25.7 16.3 23.5 16.2 −12.5 36.7
HR (bpm) 77.2 11.6 78.1 11.6 1.5 8.0
VPA (mV) 1.6 0.4 2 0.7 22.6 20.2
Difference scores
M SD
Film Scale
 Perceived physical arousal 1.6 1.3
 Mental sexual arousal 1.6 1.4

Abbreviations: HR = heart rate; VPA = vaginal pulse amplitude; pNN50 = percent of NN intervals for which successive heartbeat intervals differed by at least 50 milliseconds; SDNN = standard deviation of NN intervals.