Concealed Information Test with Combination of ERP Recording and Autonomic Measurements
The concealed information test (CIT) is based on a comparison between the subject’s physiological responses to a probe and irrelevant items in order to detect concealed information. The main purpose of our study was to investigate the CIT accuracy enhancement related to a combination of recording...
Збережено в:
| Дата: | 2013 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізіології ім. О.О. Богомольця НАН України
2013
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| Назва видання: | Нейрофизиология |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/148094 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Concealed Information Test with Combination of ERP Recording and Autonomic Measurements / E.D. Farahani, M.H.A. Moradi // Нейрофизиология. — 2013. — Т. 45, № 3. — С. 252-263. — Бібліогр.: 38 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The concealed information test (CIT) is based on a comparison between the subject’s
physiological responses to a probe and irrelevant items in order to detect concealed
information. The main purpose of our study was to investigate the CIT accuracy enhancement
related to a combination of recording of event-related potentials (ERPs) and autonomic
measurements. We tried to maximally liken the experimental conditions to real ones by the
use of a criminal context in the “mock crime” instruction and real innocent subjects instead
of hypothetical ones. Fifty-two subjects volunteered and performed just one of the innocent
or guilty scenarios. The CIT was designed in five blocks with short interstimulus intervals.
In each block, stimuli were presented in the 7th-order balanced sequence. In addition to
EEG phenomena, the heart rate, skin conductance responses (SCRs), respiratory activity, and
finger plethysmogram were recorded. Statistical analyses showed that there was a significant
difference between standardized difference scores of the guilty and innocent groups in both
ERP and autonomic measures. The SCR did not achieve the expected results reported in
standard autonomic-based CIT studies. A review of the two classification methods showed
that the combination of ERP and autonomic measurements enhances the CIT accuracy. The
best classification accuracy obtained by the aid of linear discriminant analysis (LDA) was
90.9%. It seems that using a criminal context in the “mock crime” instruction and the rewardpunishment system made subjects more attentive and involved in the experiment; therefore,
the accuracy was improved compared with that in similar studies |
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