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However, to the best of our knowledge, none of these studies have measured the physiological correlates of the fear response, relying solely on self\u2010reports and behavioral avoidance tests.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>As the physiological defensive reactivity pattern impacts on the treatment effectiveness, we tested the feasibility of an <jats:styled-content style=\"fixed-case\">AR<\/jats:styled-content> system integrated in a mobile and wearable device for assessing the psychophysiological mechanisms (heart rate) involved in fear responses in real\u2010life contexts. Specific phobia was used as a model given its prototypical defensive hyperreactivity toward the feared stimulus (spiders to spider phobics, in the current study).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The results showed that the stimuli presented using <jats:styled-content style=\"fixed-case\">AR<\/jats:styled-content> were able to induce physiological alterations in the participants, which were specific depending on the stimulus type (fear or neutral) and on the participants\u2019 level of spider fear (phobic and control group). These physiological correlates of the fear response were reflected both in the intensity of heart rate (in relation to the baseline) and in the time needed to react and recover after the stimulus exposure. Finally, we tested a theoretical model that showed that the physiological responses of phobic individuals when facing their phobic stimulus only explained its own data.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>We argue in favor of the system's feasibility at capturing and quantifying the physiological dimension of fear\u2010related responses, which may be of great value for diagnostic and treatment purposes in anxiety disorders, namely specific phobia.<\/jats:p><\/jats:sec>","DOI":"10.1002\/brb3.1084","type":"journal-article","created":{"date-parts":[[2018,8,23]],"date-time":"2018-08-23T04:11:11Z","timestamp":1534997471000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["The feasibility of an augment reality system to study the psychophysiological correlates of fear\u2010related responses"],"prefix":"10.1002","volume":"8","author":[{"given":"Susana","family":"Br\u00e1s","sequence":"first","affiliation":[{"name":"Department of Electronics, Telecommunication and Informatics (DETI) Institute of Electronics and Informatics Engineering (IEETA) University of Aveiro  Aveiro Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0346-7840","authenticated-orcid":false,"given":"Sandra C.","family":"Soares","sequence":"additional","affiliation":[{"name":"CINTESIS.UA Department of Education and Psychology (DEP) University of Aveiro  Aveiro Portugal"},{"name":"Division of Psychology Department of Clinical Neuroscience Karolinska Institute  Stockholm Sweden"},{"name":"William James Research Center (WJCR) Instituto Superior de Psicologia Aplicada (ISPA)  Lisbon Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Telmo","family":"Cruz","sequence":"additional","affiliation":[{"name":"Department of Electronics, Telecommunication and Informatics (DETI) Institute of Electronics and Informatics Engineering (IEETA) University of Aveiro  Aveiro Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tiago","family":"Magalh\u00e3es","sequence":"additional","affiliation":[{"name":"Department of Electronics, Telecommunication and Informatics (DETI) Institute of Electronics and Informatics Engineering (IEETA) University of Aveiro  Aveiro Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bernardo","family":"Marques","sequence":"additional","affiliation":[{"name":"Department of Electronics, Telecommunication and Informatics (DETI) Institute of Electronics and Informatics Engineering (IEETA) University of Aveiro  Aveiro Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cl\u00e1udia","family":"Dantas","sequence":"additional","affiliation":[{"name":"CINTESIS.UA Department of Education and Psychology (DEP) University of Aveiro  Aveiro Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nuno","family":"Fernandes","sequence":"additional","affiliation":[{"name":"CINTESIS.UA Department of Education and Psychology (DEP) University of Aveiro  Aveiro Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Maria","family":"Fernandes","sequence":"additional","affiliation":[{"name":"Department of Electronics, Telecommunication and Informatics (DETI) Institute of Electronics and Informatics Engineering (IEETA) University of Aveiro  Aveiro Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,8,22]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.books.9780890425596"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijhcs.2011.06.002"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.3389\/fnhum.2014.00112"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1080\/02763869.2012.670604"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.beth.2009.07.002"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chb.2010.07.043"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1089\/cpb.2005.8.162"},{"key":"e_1_2_9_9_1","doi-asserted-by":"crossref","unstructured":"Bras S. 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