Cathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory.
In this study, we investigated the effects of tDCS over the posterior parietal cortex (PPC) during a visual working memory (WM) task, which probes different sources of response error underlying the precision of WM recall. In two separate experiments, we demonstrated that tDCS enhanced WM precision w...
| প্রধান লেখক: | , , , , , |
|---|---|
| বিন্যাস: | Journal article |
| ভাষা: | English |
| প্রকাশিত: |
Elsevier
2016
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| _version_ | 1826307142380945408 |
|---|---|
| author | Heinen, k Sagliano, L Candini, M Husain, M Cappelletti, M Zokaei, N |
| author_facet | Heinen, k Sagliano, L Candini, M Husain, M Cappelletti, M Zokaei, N |
| author_sort | Heinen, k |
| collection | OXFORD |
| description | In this study, we investigated the effects of tDCS over the posterior parietal cortex (PPC) during a visual working memory (WM) task, which probes different sources of response error underlying the precision of WM recall. In two separate experiments, we demonstrated that tDCS enhanced WM precision when applied bilaterally over the PPC, independent of electrode configuration. In a third experiment, we demonstrated with unilateral electrode configuration over the right PPC, that only cathodal tDCS enhanced WM precision and only when baseline performance was low. Looking at the effects on underlying sources of error, we found that cathodal stimulation enhanced the probability of correct target response across all participants by reducing feature-misbinding. Only for low-baseline performers, cathodal stimulation also reduced variability of recall. We conclude that cathodal- but not anodal tDCS can improve WM precision by preventing feature-misbinding and hereby enhancing attentional selection. Forlow- baseline performers, cathodal tDCS also protects the memory trace. Furthermore, stimulation over bi- lateral PPC is more potent than unilateral cathodal tDCS in enhancing general WM precision. |
| first_indexed | 2024-03-07T06:58:30Z |
| format | Journal article |
| id | oxford-uuid:fef53132-83bd-47e4-9dfc-9dc02c4c95bc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:58:30Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:fef53132-83bd-47e4-9dfc-9dc02c4c95bc2022-03-27T13:40:42ZCathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fef53132-83bd-47e4-9dfc-9dc02c4c95bcEnglishSymplectic Elements at OxfordElsevier2016Heinen, kSagliano, LCandini, MHusain, MCappelletti, MZokaei, NIn this study, we investigated the effects of tDCS over the posterior parietal cortex (PPC) during a visual working memory (WM) task, which probes different sources of response error underlying the precision of WM recall. In two separate experiments, we demonstrated that tDCS enhanced WM precision when applied bilaterally over the PPC, independent of electrode configuration. In a third experiment, we demonstrated with unilateral electrode configuration over the right PPC, that only cathodal tDCS enhanced WM precision and only when baseline performance was low. Looking at the effects on underlying sources of error, we found that cathodal stimulation enhanced the probability of correct target response across all participants by reducing feature-misbinding. Only for low-baseline performers, cathodal stimulation also reduced variability of recall. We conclude that cathodal- but not anodal tDCS can improve WM precision by preventing feature-misbinding and hereby enhancing attentional selection. Forlow- baseline performers, cathodal tDCS also protects the memory trace. Furthermore, stimulation over bi- lateral PPC is more potent than unilateral cathodal tDCS in enhancing general WM precision. |
| spellingShingle | Heinen, k Sagliano, L Candini, M Husain, M Cappelletti, M Zokaei, N Cathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory. |
| title | Cathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory. |
| title_full | Cathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory. |
| title_fullStr | Cathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory. |
| title_full_unstemmed | Cathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory. |
| title_short | Cathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory. |
| title_sort | cathodal transcranial direct current stimulation over posterior parietal cortex enhances distinct aspects of visual working memory |
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