A polygraph records changes in respiration, electro dermal responses and cardiovascular activities (Elaad, 1998). Also known as a lie detector, which assess and records four major components that include heart rate, blood pressure, respiration and skin conductivity (Patrick, C. J., 1989). Electrolytes released on the skin surface during perspiration lowers the electrolytic resistance to the skin, thus increasing electro-dermal activity. Lying can cause changes in heart rate, breathing rate, and electro dermal activity. These responses can be stimulated by involuntary stress responses detecting in increase in the secreting of electrolytes or the increase sweat being secreted by sweat glands on the skin thus measuring the emotional connectivity and stress responses to the environment in …show more content…
The integumentary serves to prevent water loss and the excess of water gain, resistance to trauma and infection, responsible to vitamin D syntheses, thermoregulation and sensation. Composed of three layers, the epidermis, dermis and the hypodermis (Saladin , 2015). During the preliminary experiments the researchers detected the change in heart rate and, skin conductivity when asked a series of questions such as counting backwards from 30. The response to numerous questions was steadily increasing the stress response in the subject being tested. The question that the experimental team attempted to observe was whether the difficulty of questions, stimulated a stress response in the subject, by an increase in heart rate, respiration and EDA. The main goal was to be able to see the distinctions between a question that did not directly affect their stress response, and a question that stimulated a stress response. We would then be able to determine whether or not the subject was responding to these stresses by an increase in heartrate, respiration and