13-03-2012, 08:23 PM
Can you send me the seminar report for psycho physiological credibility assessment.[/font][/size][/color]
Can you send me the seminar report on psycho physiological credibility assessment.
13-03-2012, 08:23 PM
Can you send me the seminar report for psycho physiological credibility assessment.[/font][/size][/color] Can you send me the seminar report on psycho physiological credibility assessment.
14-03-2012, 11:29 AM
to get information about the topic " psycho physiological credibility assessment" full report refer the link bellow
https://seminarproject.net/Thread-psycho...ull-report
27-09-2012, 05:27 PM
PSYCHO PHYSIOLOGICAL CREDIBILITY ASSESSMENT Psycho Physiological Credibility Assessment.docx (Size: 224.26 KB / Downloads: 17) INTRODUCTION Lies are part of human life! People often tell lies to deceive others.many of us have heard about “lie detector “,some where seen in movies or read it infiction stories. Does anything of this sort really exist? If yes, does it really detect lies? Yes it does. The first thing that comes to our mind is how an instrument with some electronic components can read out our mind. Though science and technology are growing at the speed of light, has it reached a stage where it can read mind? Not exactly!But it can approach to the a stage by monitoring the physiological reaction byplotting graphs. WHAT IT IS ? Polygraph, a multigraph of physiological reaction. Lie detector or polygraph as it is technically called is an instrument that monitors the physiological reaction. It can detect only deceptive behavior of human mapped to lies. The underlying factor of this concept is a person is subjected to stress while trying todecieve. Biomedical technology is used to bring out this deception. Lying is a sort of defense mechanism used by human to avoid trouble but when it is a serious crime like murder, spying on a country, it is necessary to bring out the truth. in such a casepolygraph provide a helping hand to the law PRINCIPLE APPLIED When someone decieves, sometimes we are able to guess by his/her reactions whether they are deceiving or not. But most of the times we are unable to predict this. This principle of guessing is more widely used with the growing technologies to monitor the physiological reactions. It monitors the involuntary change that occurs in the body when the person is under stress. Biomedical instruments are used to monitor those physiological reactions. WHAT ARE BIOELECTRIC SIGNALS? Certain types of cells inside the body, such as nerve and muscle cells are encased in semi permeable membrane that permits some substance to pass through the membrane and block the others. Surrounding the cells are body fluids. These are conductive solutions containing ions. The principle ions are sodium, potassium and chloride. The cell membrane readily permits potassium and chloride ion sand block sodium ions. Since a balance is required between inside and outside of the cell, both according to concentration and electric charge, the inability of sodium top enetrate the membrane results in two condition. 1. The concentration of sodium ions inside the cell becomes much lower than the fluid outside. Since sodium ions are positive, they would make the outside of the cell more positive. 2. To balance electric charge, additional potassium ions which are also positive enter the cell, making the concentration higher inside than outside .Due to concentration imbalance of potassium ions, equilibrium is reached with a potential difference across the membrane, negative on the inside and positive on the outside. This membrane potential is called resting potential or bio electric potential. This potential is negative since it is measured from inside to the body fluids. A cell atresting potential is said to be polarized. When a cell membrane is excited by the flow of ionic current or by some form of externally applied energy, the membrane changes its characteristics and begins to allow some of the sodium ions to enter. These movements of sodium ions into the cell constitute an ionic current flow. This process of disturbing the cell from its polarized state by the rushing in of sodium ions is called depolarization. Once the rushing in of sodium ions is stopped, the in lying sodium ions are rushed out by an active process called sodium pump. Thus the cell again becomes polarized. This process of converting the cell from depolarized state back to polarized state is called repolarization. Editing Cheat a Polygraph Test (Lie Detector): Imageolygraph-machine.|thumb|A U.S. patent sketch of a polygraph machine at work. The needles chart physiological changes, such as breathing and heart rate, over time. While this sort of machine is still frequently used, computer-based polygraph machines are becoming more common.]]There are a variety of instances in which you may be subjected to a polygraph, or lie detector examination. These tests can be a source of tremendous anxiety, even for people with nothing to hide, and for good reason. Polygraph examinations are interrogations, and it is all too common for innocent people to fail them for no reason, resulting in the denial of employment or false criminal accusations. Fortunately, they are easy to trick, so follow these steps to take control of your interrogation. |
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