Sustained aftereffect of α-tACS lasts up to 70 minutes after stimulation
Transcranial alternating current stimulation (tACS) has been repeatedly demonstrated to increase power of endogenous brain oscillations in the range of the stimulated frequency after stimulation. In the alpha band this aftereffect has been shown to persist for at least 30 minutes. However, in most e...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2016-05-01
|
| Series: | Frontiers in Human Neuroscience |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnhum.2016.00245/full |
| _version_ | 1819138129781587968 |
|---|---|
| author | Florian H Kasten James eDowsett James eDowsett Christoph S Herrmann Christoph S Herrmann |
| author_facet | Florian H Kasten James eDowsett James eDowsett Christoph S Herrmann Christoph S Herrmann |
| author_sort | Florian H Kasten |
| collection | DOAJ |
| description | Transcranial alternating current stimulation (tACS) has been repeatedly demonstrated to increase power of endogenous brain oscillations in the range of the stimulated frequency after stimulation. In the alpha band this aftereffect has been shown to persist for at least 30 minutes. However, in most experiments the aftereffect exceeded the duration of the measurement. Thus, it remains unclear how the effect develops beyond these 30 minutes and when it decays. The current study aimed to extend existing findings by monitoring the physiological aftereffect of tACS in the alpha range for an extended period of 90 minutes post-stimulation. To this end participants received either 20 minutes of tACS or sham stimulation with intensities below their individual sensation threshold at the individual alpha frequency. Electroencephalogram was acquired during 3 minutes before and ninety minutes after stimulation. Subjects performed a visual vigilance task during the whole measurement. While the enhanced power in the individual alpha band did not return back to pre-stimulation baseline in the stimulation group, the difference between stimulation and sham diminishes after 70 minutes due to a natural alpha increase of the sham group. |
| first_indexed | 2024-12-22T11:01:52Z |
| format | Article |
| id | doaj.art-e6d381c4f95b48acb2451ec7255a937f |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-22T11:01:52Z |
| publishDate | 2016-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-e6d381c4f95b48acb2451ec7255a937f2022-12-21T18:28:29ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612016-05-011010.3389/fnhum.2016.00245197241Sustained aftereffect of α-tACS lasts up to 70 minutes after stimulationFlorian H Kasten0James eDowsett1James eDowsett2Christoph S Herrmann3Christoph S Herrmann4European Medical School, Cluster for excellence Hearing for all, Carl von Ossietzky UniversityLMUEuropean Medical School, Cluster for excellence Hearing for all, Carl von Ossietzky UniversityEuropean Medical School, Cluster for excellence Hearing for all, Carl von Ossietzky UniversityCarl von Ossietzky UniversityTranscranial alternating current stimulation (tACS) has been repeatedly demonstrated to increase power of endogenous brain oscillations in the range of the stimulated frequency after stimulation. In the alpha band this aftereffect has been shown to persist for at least 30 minutes. However, in most experiments the aftereffect exceeded the duration of the measurement. Thus, it remains unclear how the effect develops beyond these 30 minutes and when it decays. The current study aimed to extend existing findings by monitoring the physiological aftereffect of tACS in the alpha range for an extended period of 90 minutes post-stimulation. To this end participants received either 20 minutes of tACS or sham stimulation with intensities below their individual sensation threshold at the individual alpha frequency. Electroencephalogram was acquired during 3 minutes before and ninety minutes after stimulation. Subjects performed a visual vigilance task during the whole measurement. While the enhanced power in the individual alpha band did not return back to pre-stimulation baseline in the stimulation group, the difference between stimulation and sham diminishes after 70 minutes due to a natural alpha increase of the sham group.http://journal.frontiersin.org/Journal/10.3389/fnhum.2016.00245/fullEEGtranscranial electrical stimulation (TES)alpha oscillaitonsaftereffecttranscranial alternating current stimulation (tACS) |
| spellingShingle | Florian H Kasten James eDowsett James eDowsett Christoph S Herrmann Christoph S Herrmann Sustained aftereffect of α-tACS lasts up to 70 minutes after stimulation Frontiers in Human Neuroscience EEG transcranial electrical stimulation (TES) alpha oscillaitons aftereffect transcranial alternating current stimulation (tACS) |
| title | Sustained aftereffect of α-tACS lasts up to 70 minutes after stimulation |
| title_full | Sustained aftereffect of α-tACS lasts up to 70 minutes after stimulation |
| title_fullStr | Sustained aftereffect of α-tACS lasts up to 70 minutes after stimulation |
| title_full_unstemmed | Sustained aftereffect of α-tACS lasts up to 70 minutes after stimulation |
| title_short | Sustained aftereffect of α-tACS lasts up to 70 minutes after stimulation |
| title_sort | sustained aftereffect of α tacs lasts up to 70 minutes after stimulation |
| topic | EEG transcranial electrical stimulation (TES) alpha oscillaitons aftereffect transcranial alternating current stimulation (tACS) |
| url | http://journal.frontiersin.org/Journal/10.3389/fnhum.2016.00245/full |
| work_keys_str_mv | AT florianhkasten sustainedaftereffectofatacslastsupto70minutesafterstimulation AT jamesedowsett sustainedaftereffectofatacslastsupto70minutesafterstimulation AT jamesedowsett sustainedaftereffectofatacslastsupto70minutesafterstimulation AT christophsherrmann sustainedaftereffectofatacslastsupto70minutesafterstimulation AT christophsherrmann sustainedaftereffectofatacslastsupto70minutesafterstimulation |