Publicação
Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness
| Resumo: | Snakes and spiders constitute fear-relevant stimuli for humans, as many species have deleterious and even fatal effects. However, snakes provoked an older and thus stronger evolutionary pressure than spiders, shaping the vision of earliest primates toward preferential visual processing, mainly in the most complex perceptual conditions. To the best of our knowledge, no study has yet directly assessed the role of ecologically-relevant stimuli in preferentially accessing visual awareness. Using continuous flash suppression (CFS), the present study assessed the role of evolutionary pressure in gaining a preferential access to visual awareness. For this purpose, we measured the time needed for three types of stimuli - snakes, spiders (matched with snakes for rated fear levels, but for which an influence on humans but not other primates is well grounded) and birds - to break the suppression and enter visual awareness in two different suppression intensity conditions. The results showed that in the less demanding awareness access condition (stimuli presented to the participants' dominant eye) both evolutionarily relevant stimuli (snakes and spiders) showed a faster entry into visual awareness than birds, whereas in the most demanding awareness access condition (stimuli presented to the participants' non-dominant eye) only snakes showed this privileged access. Our data suggest that the privileged unconscious processing of snakes in the most complex perceptual conditions extends to visual awareness, corroborating the proposed influence of snakes in primate visual evolution. |
|---|---|
| Autores principais: | Gomes, Nuno |
| Outros Autores: | Silva, Samuel; Silva, Carlos Fernandes da; Soares, Sandra Cristina de Oliveira |
| Assunto: | Evolution Fear Snake detection theory Continuous flashing suppression |
| Ano: | 2017 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Ispa-Instituto Universitário |
| Idioma: | inglês |
| Origem: | Repositório do Ispa - Instituto Universitário |
| _version_ | 1866886930323472384 |
|---|---|
| author | Gomes, Nuno |
| author2 | Silva, Samuel Silva, Carlos Fernandes da Soares, Sandra Cristina de Oliveira |
| author2_role | author author author |
| author_facet | Gomes, Nuno Silva, Samuel Silva, Carlos Fernandes da Soares, Sandra Cristina de Oliveira |
| author_role | author |
| contributor_name_str_mv | Repositório do ISPA |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Gomes, Nuno\"},{\"Person.name\":\"Silva, Samuel\"},{\"Person.name\":\"Silva, Carlos Fernandes da\"},{\"Person.name\":\"Soares, Sandra Cristina de Oliveira\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Repositório do ISPA |
| datacite.creators.creator.creatorName.fl_str_mv | Gomes, Nuno Silva, Samuel Silva, Carlos Fernandes da Soares, Sandra Cristina de Oliveira |
| datacite.date.Accepted.fl_str_mv | 2017-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2017-03-14T18:40:34Z |
| datacite.date.embargoed.fl_str_mv | 2017-03-14T18:40:34Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Evolution Fear Snake detection theory Continuous flashing suppression |
| datacite.titles.title.fl_str_mv | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness |
| dc.contributor.none.fl_str_mv | Repositório do ISPA |
| dc.creator.none.fl_str_mv | Gomes, Nuno Silva, Samuel Silva, Carlos Fernandes da Soares, Sandra Cristina de Oliveira |
| dc.date.Accepted.fl_str_mv | 2017-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2017-03-14T18:40:34Z |
| dc.date.embargoed.fl_str_mv | 2017-03-14T18:40:34Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.12/5325 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Evolution Fear Snake detection theory Continuous flashing suppression |
| dc.title.fl_str_mv | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Snakes and spiders constitute fear-relevant stimuli for humans, as many species have deleterious and even fatal effects. However, snakes provoked an older and thus stronger evolutionary pressure than spiders, shaping the vision of earliest primates toward preferential visual processing, mainly in the most complex perceptual conditions. To the best of our knowledge, no study has yet directly assessed the role of ecologically-relevant stimuli in preferentially accessing visual awareness. Using continuous flash suppression (CFS), the present study assessed the role of evolutionary pressure in gaining a preferential access to visual awareness. For this purpose, we measured the time needed for three types of stimuli - snakes, spiders (matched with snakes for rated fear levels, but for which an influence on humans but not other primates is well grounded) and birds - to break the suppression and enter visual awareness in two different suppression intensity conditions. The results showed that in the less demanding awareness access condition (stimuli presented to the participants' dominant eye) both evolutionarily relevant stimuli (snakes and spiders) showed a faster entry into visual awareness than birds, whereas in the most demanding awareness access condition (stimuli presented to the participants' non-dominant eye) only snakes showed this privileged access. Our data suggest that the privileged unconscious processing of snakes in the most complex perceptual conditions extends to visual awareness, corroborating the proposed influence of snakes in primate visual evolution. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorio.ispa.pt/bitstreams/e6ca9469-94fa-414a-baf3-5ebcd9412305/download |
| id | ispa_60fe54ca0a446bc7e9b2eca6b8f0bd49 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.12/5325 |
| instacron_str | ispa |
| institution | Ispa-Instituto Universitário |
| instname_str | Ispa-Instituto Universitário |
| language | eng |
| network_acronym_str | ispa |
| network_name_str | Repositório do Ispa - Instituto Universitário |
| oai_identifier_str | oai:repositorio.ispa.pt:10400.12/5325 |
| organization_str_mv | urn:organizationAcronym:ispa |
| person_str_mv | Gomes, Nuno Silva, Samuel Silva, Carlos Fernandes da Soares, Sandra Cristina de Oliveira |
| publishDate | 2017 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | Repositório do Ispa - Instituto Universitário |
| repository_id_str | urn:repositoryAcronym:ispa |
| service_str_mv | urn:repositoryAcronym:ispa |
| spelling | engElsevierpt_PTSnakes and spiders constitute fear-relevant stimuli for humans, as many species have deleterious and even fatal effects. However, snakes provoked an older and thus stronger evolutionary pressure than spiders, shaping the vision of earliest primates toward preferential visual processing, mainly in the most complex perceptual conditions. To the best of our knowledge, no study has yet directly assessed the role of ecologically-relevant stimuli in preferentially accessing visual awareness. Using continuous flash suppression (CFS), the present study assessed the role of evolutionary pressure in gaining a preferential access to visual awareness. For this purpose, we measured the time needed for three types of stimuli - snakes, spiders (matched with snakes for rated fear levels, but for which an influence on humans but not other primates is well grounded) and birds - to break the suppression and enter visual awareness in two different suppression intensity conditions. The results showed that in the less demanding awareness access condition (stimuli presented to the participants' dominant eye) both evolutionarily relevant stimuli (snakes and spiders) showed a faster entry into visual awareness than birds, whereas in the most demanding awareness access condition (stimuli presented to the participants' non-dominant eye) only snakes showed this privileged access. Our data suggest that the privileged unconscious processing of snakes in the most complex perceptual conditions extends to visual awareness, corroborating the proposed influence of snakes in primate visual evolution.application/pdfpt_PTBeware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awarenessGomes, NunoSilva, SamuelSilva, Carlos Fernandes daSoares, Sandra Cristina de OliveiraHostingInstitutionOrganizationalRepositório do ISPAe-mailmailto:repositorio@ispa.ptrepositorio@ispa.ptISSNIsPartOf1090-5138DOIIsPartOf10.1016/j.evolhumbehav.2016.10.0042017-03-14T18:40:34Z20172017-01-01T00:00:00ZHandlehttp://hdl.handle.net/10400.12/5325http://purl.org/coar/access_right/c_16ecrestricted accessEvolutionFearSnake detection theoryContinuous flashing suppression623461 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal article2017http://creativecommons.org/licenses/by-nc-nd/4.0/http://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://repositorio.ispa.pt/bitstreams/e6ca9469-94fa-414a-baf3-5ebcd9412305/downloadEvolution and Human Behavior382227234United States |
| spellingShingle | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness Gomes, Nuno Evolution Fear Snake detection theory Continuous flashing suppression |
| status | SINGLETON |
| subject.fl_str_mv | Evolution Fear Snake detection theory Continuous flashing suppression |
| title | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness |
| title_full | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness |
| title_fullStr | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness |
| title_full_unstemmed | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness |
| title_short | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness |
| title_sort | Beware the serpent: The advantage of ecologically-relevant stimuli in accessing visual awareness |
| topic | Evolution Fear Snake detection theory Continuous flashing suppression |
| topic_facet | Evolution Fear Snake detection theory Continuous flashing suppression |
| url | http://hdl.handle.net/10400.12/5325 |
| visible | 1 |