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10 | 10 |
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11 | 11 | @comment{jabref-meta: databaseType:bibtex;} |
12 | 12 |
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| 13 | +@techreport{xia:2020, |
| 14 | + type = {preprint}, |
| 15 | + title = {Saccadic {Scanpath} {Length}: {An} {Index} for {Human} {Threat} {Conditioning}}, |
| 16 | + shorttitle = {Saccadic {Scanpath} {Length}}, |
| 17 | + url = {https://osf.io/qtpve}, |
| 18 | + abstract = {Threat-conditioned cues are thought to capture overt attention in a bottom-up process. Quantification of this phenomenon typically relies on cue competition paradigms. Here, we sought to exploit gaze patterns during presentation of a visual conditioned stimulus only, in order to quantify threat conditioning. To this end, we capitalise on a summary statistic of visual search during CS presentation, scanpath length. In a simple delayed threat conditioning paradigm with full-screen monochrome conditioned stimuli (CS), we observed shorter scanpath length during CS+ compared to CS- presentation. Retrodictive validity, i.e. effect size to distinguish CS+ and CS-, was maximised by considering a 2-s time window before US onset. Taking into account the shape of the scan speed response resulted in similar effect size. The mechanism underlying shorter scanpath length appeared to be longer fixation duration and more fixation on the screen center during CS+ relative to CS- presentation. These findings were replicated in a second experiment with similar setup, and further confirmed in a third experiment using full-screen fractals as CS. This experiment included an extinction session during which scanpath differences disappeared. In a fourth experiment with auditory CS and instruction to fixate screen centre, no scanpath length differences were observed. In conclusion, our study suggests scanpath length as a visual search summary statistic, which may be used as complementary measure to quantify threat conditioning with retrodictive validity similar to that of skin conductance responses.}, |
| 19 | + urldate = {2020-07-09}, |
| 20 | + institution = {PsyArXiv}, |
| 21 | + author = {Xia, Yanfang and Melinscak, Filip and Bach, Dominik R}, |
| 22 | + month = feb, |
| 23 | + year = {2020}, |
| 24 | + doi = {10.31234/osf.io/qtpve}, |
| 25 | +} |
13 | 26 |
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| 27 | +@article{schutz:2011, |
| 28 | + Author = {Schutz, A. C. and Braun, D. I. and Gegenfurtner, K. R.}, |
| 29 | + title = {Eye movements and perception: {A} selective review}, |
| 30 | + Volume = {11}, |
| 31 | + issn = {1534-7362}, |
| 32 | + shorttitle = {Eye movements and perception}, |
| 33 | + url = {http://jov.arvojournals.org/Article.aspx?doi=10.1167/11.5.9}, |
| 34 | + doi = {10.1167/11.5.9}, |
| 35 | + Number = {5}, |
| 36 | + urldate = {2019-12-16}, |
| 37 | + Journal = {Journal of Vision}, |
| 38 | + Year = {2011}, |
| 39 | + pages = {1--30}, |
| 40 | +} |
14 | 41 |
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15 | 42 | @article{Homan:2017aa, |
16 | 43 | Author = {Homan, Philipp and Lin, Qi and Murrough, James W and Soleimani, Laili and Bach, Dominik R and Clem, Roger L and Schiller, Daniela}, |
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