Mazarakis, Konstantinos (2022) Detecting Familiarity of Faces Through Pupillometry and RSVP. Bachelor thesis, Psychology.
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Abstract
EEG and pupil size have been used to detect if someone is familiar with a stimulus without actively searching for it. In studies with the use of EEG and RSVP (Bowman et al., 2013) it was shown that the brain pattern observed while seeing a stimulus that someone actively searches for is similar to the one when someone is familiar with a stimulus but not actively searching for it. While EEG is effective, it is considered to be expensive and there are not a lot of places that have one. Here we show that the combination of pupillometry and RSVP can be a promising alternative to the EEG in order to detect hidden information. In our study, we found that the pupil size while seeing a familiar face (probe) without paying attention to it, only slightly differs from the pupil size observed while seeing a random face. The small visual difference that was observed was not found to be significant. The results contradict our main hypothesis and the results from previous studies and it supports the need for further investigation. Our results support that pupillometry as an alternative to the use of EEG is not as accurate and thus cannot replace it. We anticipate that our study will elicit further interest in investigating how pupillometry can have similar accuracy as the EEG in detecting subliminal information. Modifications in future studies could find more promising results in familiar stimulus detection. Moreover, a significant finding in this related topic could be crucial in criminal justice and in the forensic field. Keywords: RSVP; Subliminal salience; Pupillometry; Faces
| Item Type: | Thesis (Bachelor) |
|---|---|
| Supervisor name: | Mijn, W.R. van der |
| Degree programme: | Psychology |
| Differentiation route: | None [Bachelor Psychology] |
| Date Deposited: | 01 Aug 2022 07:06 |
| Last Modified: | 01 Aug 2022 07:06 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/1209 |
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