Publicação
Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving
| Resumo: | Transcranial Direct Current Stimulation (tDCS) over the Dorsolateral Prefrontal Cortex (DLPFC) has already been shown to decrease craving for food. However, it remains unclear whether a single session of tDCS combined with a cognitive bias modification (CBM) task may affect explicit and implicit measures of craving for chocolate. Fifty-one healthy volunteers (38 females; mean age: 22.12 +/- 3.38) were randomly allocated to CBM training based on the Approach Avoidance task and either Sham, Right anodal-Left cathodal (RALC), or Left anodal-Right cathodal (LARC) tDCS. Results show that there was an increase in the explicit craving for chocolate, as assessed by the Visual Analog Scale [F(2, 46) = 3.239, p = 0.048], from the baseline to post-intervention. Participants which received LARC tDCS were explicitly self-reporting more craving for chocolate than those that received RALC tDCS (p = 0.023). Moreover, this effect was also observed on the implicit measure [F(2, 46) = 4.168, p = 0.022]. LARC tDCS significantly increased the implicit preference for chocolate when comparing to both RALC (p = 0.009) and Sham tDCS (p = 0.034). Previous studies have shown that RALC tDCS over the PFC is able to effectively decrease craving for food. Interestingly, the present data not only does not reproduce such result, but instead it suggests that LARC tDCS can actually increase the preference for chocolate. This result is compatible with recent models of brain laterality, in which cue craving seems to be more dependent on the left hemisphere. Thus, shifting the activity to the left hemisphere (while simultaneously reducing the activity over the homotopic region) may have led to this increased implicit as well as explicit preference for chocolate. |
|---|---|
| Autores principais: | Carvalho, Sandra |
| Outros Autores: | Sampaio, Adriana; Mendes, Augusto José; Lema, Alberto; Vieira, Daniela; Gonçalves, Óscar F.; Leite, Jorge |
| Assunto: | Chocolate craving Approach-avoidance training tDCS PFC Implicit preference |
| Ano: | 2019 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1866877694297243648 |
|---|---|
| author | Carvalho, Sandra |
| author2 | Sampaio, Adriana Mendes, Augusto José Lema, Alberto Vieira, Daniela Gonçalves, Óscar F. Leite, Jorge |
| author2_role | author author author author author author |
| author_facet | Carvalho, Sandra Sampaio, Adriana Mendes, Augusto José Lema, Alberto Vieira, Daniela Gonçalves, Óscar F. Leite, Jorge |
| author_role | author |
| contributor_name_str_mv | Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Carvalho, Sandra\"},{\"Person.name\":\"Sampaio, Adriana\"},{\"Person.name\":\"Mendes, Augusto José\"},{\"Person.name\":\"Lema, Alberto\"},{\"Person.name\":\"Vieira, Daniela\"},{\"Person.name\":\"Gonçalves, Óscar F.\"},{\"Person.name\":\"Leite, Jorge\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Carvalho, Sandra Sampaio, Adriana Mendes, Augusto José Lema, Alberto Vieira, Daniela Gonçalves, Óscar F. Leite, Jorge |
| datacite.date.Accepted.fl_str_mv | 2019-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2020-08-03T14:15:06Z |
| datacite.date.embargoed.fl_str_mv | 2020-08-03T14:15:06Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Chocolate craving Approach-avoidance training tDCS PFC Implicit preference |
| datacite.titles.title.fl_str_mv | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving |
| dc.contributor.none.fl_str_mv | Universidade do Minho |
| dc.creator.none.fl_str_mv | Carvalho, Sandra Sampaio, Adriana Mendes, Augusto José Lema, Alberto Vieira, Daniela Gonçalves, Óscar F. Leite, Jorge |
| dc.date.Accepted.fl_str_mv | 2019-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2020-08-03T14:15:06Z |
| dc.date.embargoed.fl_str_mv | 2020-08-03T14:15:06Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/66218 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Frontiers Media S.A. |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Chocolate craving Approach-avoidance training tDCS PFC Implicit preference |
| dc.title.fl_str_mv | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Transcranial Direct Current Stimulation (tDCS) over the Dorsolateral Prefrontal Cortex (DLPFC) has already been shown to decrease craving for food. However, it remains unclear whether a single session of tDCS combined with a cognitive bias modification (CBM) task may affect explicit and implicit measures of craving for chocolate. Fifty-one healthy volunteers (38 females; mean age: 22.12 +/- 3.38) were randomly allocated to CBM training based on the Approach Avoidance task and either Sham, Right anodal-Left cathodal (RALC), or Left anodal-Right cathodal (LARC) tDCS. Results show that there was an increase in the explicit craving for chocolate, as assessed by the Visual Analog Scale [F(2, 46) = 3.239, p = 0.048], from the baseline to post-intervention. Participants which received LARC tDCS were explicitly self-reporting more craving for chocolate than those that received RALC tDCS (p = 0.023). Moreover, this effect was also observed on the implicit measure [F(2, 46) = 4.168, p = 0.022]. LARC tDCS significantly increased the implicit preference for chocolate when comparing to both RALC (p = 0.009) and Sham tDCS (p = 0.034). Previous studies have shown that RALC tDCS over the PFC is able to effectively decrease craving for food. Interestingly, the present data not only does not reproduce such result, but instead it suggests that LARC tDCS can actually increase the preference for chocolate. This result is compatible with recent models of brain laterality, in which cue craving seems to be more dependent on the left hemisphere. Thus, shifting the activity to the left hemisphere (while simultaneously reducing the activity over the homotopic region) may have led to this increased implicit as well as explicit preference for chocolate. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://prod-dspace.uminho.pt/bitstreams/f590f9ee-bdd2-4186-bb30-49fd70fc5e45/download |
| id | rum_f1b03b44aeb770e68fbe366ee8dfd909 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/66218 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/66218 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Carvalho, Sandra Sampaio, Adriana Mendes, Augusto José Lema, Alberto Vieira, Daniela Gonçalves, Óscar F. Leite, Jorge |
| publishDate | 2019 |
| publisher.none.fl_str_mv | Frontiers Media S.A. |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engFrontiers Media S.A.porTranscranial Direct Current Stimulation (tDCS) over the Dorsolateral Prefrontal Cortex (DLPFC) has already been shown to decrease craving for food. However, it remains unclear whether a single session of tDCS combined with a cognitive bias modification (CBM) task may affect explicit and implicit measures of craving for chocolate. Fifty-one healthy volunteers (38 females; mean age: 22.12 +/- 3.38) were randomly allocated to CBM training based on the Approach Avoidance task and either Sham, Right anodal-Left cathodal (RALC), or Left anodal-Right cathodal (LARC) tDCS. Results show that there was an increase in the explicit craving for chocolate, as assessed by the Visual Analog Scale [F(2, 46) = 3.239, p = 0.048], from the baseline to post-intervention. Participants which received LARC tDCS were explicitly self-reporting more craving for chocolate than those that received RALC tDCS (p = 0.023). Moreover, this effect was also observed on the implicit measure [F(2, 46) = 4.168, p = 0.022]. LARC tDCS significantly increased the implicit preference for chocolate when comparing to both RALC (p = 0.009) and Sham tDCS (p = 0.034). Previous studies have shown that RALC tDCS over the PFC is able to effectively decrease craving for food. Interestingly, the present data not only does not reproduce such result, but instead it suggests that LARC tDCS can actually increase the preference for chocolate. This result is compatible with recent models of brain laterality, in which cue craving seems to be more dependent on the left hemisphere. Thus, shifting the activity to the left hemisphere (while simultaneously reducing the activity over the homotopic region) may have led to this increased implicit as well as explicit preference for chocolate.application/pdfporPolarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate cravingCarvalho, SandraSampaio, AdrianaMendes, Augusto JoséLema, AlbertoVieira, DanielaGonçalves, Óscar F.Leite, JorgeHostingInstitutionOrganizationalUniversidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptISSNIsPartOf1663-9812DOIIsPartOf10.3389/fphar.2018.015002020-08-03T14:15:06Z20192018-052020-08-03T13:50:08Z2019-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/66218http://purl.org/coar/access_right/c_abf2open accessChocolate cravingApproach-avoidance trainingtDCSPFCImplicit preference687009 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://prod-dspace.uminho.pt/bitstreams/f590f9ee-bdd2-4186-bb30-49fd70fc5e45/download |
| spellingShingle | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving Carvalho, Sandra Chocolate craving Approach-avoidance training tDCS PFC Implicit preference |
| status | SINGLETON |
| subject.fl_str_mv | Chocolate craving Approach-avoidance training tDCS PFC Implicit preference |
| title | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving |
| title_full | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving |
| title_fullStr | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving |
| title_full_unstemmed | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving |
| title_short | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving |
| title_sort | Polarity specific effects of cross-hemispheric tDCS coupled with approach-avoidance training on chocolate craving |
| topic | Chocolate craving Approach-avoidance training tDCS PFC Implicit preference |
| topic_facet | Chocolate craving Approach-avoidance training tDCS PFC Implicit preference |
| url | https://hdl.handle.net/1822/66218 |
| visible | 1 |