Comparison between CV4 and EV4 - Osteopathic Research
Comparison between CV4 and EV4 - Osteopathic Research
Comparison between CV4 and EV4 - Osteopathic Research
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31<br />
4.1.3 Sensors<br />
4.1.3.1 Multi sensor<br />
This multisensor simultaneously captures three physiological measurements:<br />
electrical skin conductivity<br />
pulse rate<br />
skin temperature<br />
fig. 10<br />
multi sensor<br />
4.1.3.1.1 EDG = electro dermography<br />
This measures the electric conductivity of the skin, which is a relative<br />
measurement tool for sweat gl<strong>and</strong> activity <strong>and</strong> thus for the activity of the<br />
sympathetic as well. Every mental stimulation has a direct effect on the skin<br />
resistance.<br />
Technical facts:<br />
• Unit of electrical skin conductance: Siemens (S)<br />
• Electrical conductivity is the reciprocal value of the skin’s electrical<br />
resistance<br />
• Unit of the skin’s electrical resistance: Ohm ( Ω)<br />
• The report is done digitally in micro-Siemens (µS)<br />
• The surface area of both sensors is 50.3 mm 2<br />
• The skin conductance value is marked four times per second<br />
Margit Grill / 2006