Effects of Transcranial Direct Current Stimulation on episodic memory related to emotional visual stimuli.
The present study investigated emotional memory following bilateral transcranial electrical stimulation (direct current of 1 mA, for 20 minutes) over fronto-temporal cortical areas of healthy participants during the encoding of images that differed in affective arousal and valence. The main result w...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2010-05-01
|
| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20498700/?tool=EBI |
| _version_ | 1818573998466793472 |
|---|---|
| author | Barbara Penolazzi Alberto Di Domenico Daniele Marzoli Nicola Mammarella Beth Fairfield Raffaella Franciotti Alfredo Brancucci Luca Tommasi |
| author_facet | Barbara Penolazzi Alberto Di Domenico Daniele Marzoli Nicola Mammarella Beth Fairfield Raffaella Franciotti Alfredo Brancucci Luca Tommasi |
| author_sort | Barbara Penolazzi |
| collection | DOAJ |
| description | The present study investigated emotional memory following bilateral transcranial electrical stimulation (direct current of 1 mA, for 20 minutes) over fronto-temporal cortical areas of healthy participants during the encoding of images that differed in affective arousal and valence. The main result was a significant interaction between the side of anodal stimulation and image emotional valence. Specifically, right anodal/left cathodal stimulation selectively facilitated the recall of pleasant images with respect to both unpleasant and neutral images whereas left anodal/right cathodal stimulation selectively facilitated the recall of unpleasant images with respect to both pleasant and neutral images. From a theoretical perspective, this double dissociation between the side of anodal stimulation and the advantage in the memory performance for a specific type of stimulus depending on its pleasantness supported the specific-valence hypothesis of emotional processes, which assumes a specialization of the right hemisphere in processing unpleasant stimuli and a specialization of the left hemisphere in processing pleasant stimuli. From a methodological point of view, first we found tDCS effects strictly dependent on the stimulus category, and second a pattern of results in line with an interfering and inhibitory account of anodal stimulation on memory performance. These findings need to be carefully considered in applied contexts, such as the rehabilitation of altered emotional processing or eye-witness memory, and deserve to be further investigated in order to understand their underlying mechanisms of action. |
| first_indexed | 2024-12-15T00:20:34Z |
| format | Article |
| id | doaj.art-e4ddf0506786470283b8ea9472c3e19b |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-15T00:20:34Z |
| publishDate | 2010-05-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-e4ddf0506786470283b8ea9472c3e19b2022-12-21T22:42:19ZengPublic Library of Science (PLoS)PLoS ONE1932-62032010-05-0155e1062310.1371/journal.pone.0010623Effects of Transcranial Direct Current Stimulation on episodic memory related to emotional visual stimuli.Barbara PenolazziAlberto Di DomenicoDaniele MarzoliNicola MammarellaBeth FairfieldRaffaella FranciottiAlfredo BrancucciLuca TommasiThe present study investigated emotional memory following bilateral transcranial electrical stimulation (direct current of 1 mA, for 20 minutes) over fronto-temporal cortical areas of healthy participants during the encoding of images that differed in affective arousal and valence. The main result was a significant interaction between the side of anodal stimulation and image emotional valence. Specifically, right anodal/left cathodal stimulation selectively facilitated the recall of pleasant images with respect to both unpleasant and neutral images whereas left anodal/right cathodal stimulation selectively facilitated the recall of unpleasant images with respect to both pleasant and neutral images. From a theoretical perspective, this double dissociation between the side of anodal stimulation and the advantage in the memory performance for a specific type of stimulus depending on its pleasantness supported the specific-valence hypothesis of emotional processes, which assumes a specialization of the right hemisphere in processing unpleasant stimuli and a specialization of the left hemisphere in processing pleasant stimuli. From a methodological point of view, first we found tDCS effects strictly dependent on the stimulus category, and second a pattern of results in line with an interfering and inhibitory account of anodal stimulation on memory performance. These findings need to be carefully considered in applied contexts, such as the rehabilitation of altered emotional processing or eye-witness memory, and deserve to be further investigated in order to understand their underlying mechanisms of action.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20498700/?tool=EBI |
| spellingShingle | Barbara Penolazzi Alberto Di Domenico Daniele Marzoli Nicola Mammarella Beth Fairfield Raffaella Franciotti Alfredo Brancucci Luca Tommasi Effects of Transcranial Direct Current Stimulation on episodic memory related to emotional visual stimuli. PLoS ONE |
| title | Effects of Transcranial Direct Current Stimulation on episodic memory related to emotional visual stimuli. |
| title_full | Effects of Transcranial Direct Current Stimulation on episodic memory related to emotional visual stimuli. |
| title_fullStr | Effects of Transcranial Direct Current Stimulation on episodic memory related to emotional visual stimuli. |
| title_full_unstemmed | Effects of Transcranial Direct Current Stimulation on episodic memory related to emotional visual stimuli. |
| title_short | Effects of Transcranial Direct Current Stimulation on episodic memory related to emotional visual stimuli. |
| title_sort | effects of transcranial direct current stimulation on episodic memory related to emotional visual stimuli |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20498700/?tool=EBI |
| work_keys_str_mv | AT barbarapenolazzi effectsoftranscranialdirectcurrentstimulationonepisodicmemoryrelatedtoemotionalvisualstimuli AT albertodidomenico effectsoftranscranialdirectcurrentstimulationonepisodicmemoryrelatedtoemotionalvisualstimuli AT danielemarzoli effectsoftranscranialdirectcurrentstimulationonepisodicmemoryrelatedtoemotionalvisualstimuli AT nicolamammarella effectsoftranscranialdirectcurrentstimulationonepisodicmemoryrelatedtoemotionalvisualstimuli AT bethfairfield effectsoftranscranialdirectcurrentstimulationonepisodicmemoryrelatedtoemotionalvisualstimuli AT raffaellafranciotti effectsoftranscranialdirectcurrentstimulationonepisodicmemoryrelatedtoemotionalvisualstimuli AT alfredobrancucci effectsoftranscranialdirectcurrentstimulationonepisodicmemoryrelatedtoemotionalvisualstimuli AT lucatommasi effectsoftranscranialdirectcurrentstimulationonepisodicmemoryrelatedtoemotionalvisualstimuli |