Detection of deception with functional magnetic resonance imaging Janelle Märs, Dagmar Loorits, Kirk Link, Anastassia Lazareva
Abstract The current thesis is a literature review aimed to compare the nature of the polygraph and functional magnetic resonance imaging (fMRI) and to bring out possible weaknesses regarding the use of fMRI. Distinguishing deception from truth has always been troublesome for mankind. A lot of equipment regarding lie detection have come up during last century. While the technique has advanced, there is still no permanent solution. In pursuit of an alternative to the polygraph, fMRI has come to attention. While laborotatory studies have been carried out, the results have not been what were expected of them. Neither the polygraph nor fMRI are perfect. Even though the polygraph and fMRI are of different nature and they measure different indicators, neither of them are undisputedly the one and only. Both of them require a willing subject. Furthermore, participants must not be of mental retardation or with a functional brain disorder. Specifically, even the slightest of movements may cause image noise in fMRI, making the results hard to analyze. In addition, a variety of contradictions follow the use of this modern modality and there is no easy way to solve them. Keywords: polygraph, fmri, lie detection, bold, reliability, prospects, limitations.
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UURIMISTÖÖDE ARTIKLID
FUNKTSIONAALNE MAGNETRESONANTSTOMOGRAAFIA VALEDETEKTORINA
