Figure 9
From: Spatial temperature distribution in human hairy and glabrous skin after infrared CO2 laser radiation
The figure illustrates a linear regression analysis between the reported perception and the temperature profiles at varying depths. Due to high fluctuations of the raw psychophysical data (VAS) a lowpass filter was applied for removing measuring artifacts (moving average filter, 5 points span inducing no time lag). For hairy skin the highest correlation was found at approximately 50 μm and for the glabrous skin the highest correlation was found at approximately 130 μm.