Dual-hemisphere transcranial direct current stimulation improves performance in a tactile spatial discrimination task

Fujimoto, Shuhei; Yamaguchi, Tomohiko; Otaka, Yohei; Kondo, Kunitsugu; Tanaka, Satoshi

doi:10.1016/j.clinph.2013.12.100

Cited by 37 publications

(53 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The daily testing procedure began with baseline assessment of the right index finger (IF) by three GOT measurements. Each GOT measurement lasted nine to ten minutes, which is comparable to the duration of GOT testing reported previously [Fujimoto et al, 2014]. After baseline assessment, a questionnaire was administered to capture level of attention, perception of fatigue, and amount of discomfort (range 1-10; 15no attention/fatigue/discomfort, 105maximum attention/fatigue/discomfort; Ragert et al, 2008).…”

Section: Methodsmentioning

confidence: 95%

Behavioural and neurofunctional impact of transcranial direct current stimulation on somatosensory learning

Hilgenstock

Weiß

Huonker

et al. 2016

Human Brain Mapping

View full text Add to dashboard Cite

We investigated the effect of repeated delivery of anodal transcranial direct current stimulation (tDCS) on somatosensory performance and long-term learning. Over the course of five days, tDCS was applied to the primary somatosensory cortex (S1) by means of neuronavigation employing magnetencephalography (MEG). Compared to its sham application, tDCS promoted tactile learning by reducing the two-point discrimination threshold assessed by the grating orientation task (GOT) primarily by affecting intersessional changes in performance. These results were accompanied by alterations in the neurofunctional organization of the brain, as revealed by functional magnetic resonance imaging conducted prior to the study, at the fifth day of tDCS delivery and four weeks after the last application of tDCS. A decrease in activation at the primary site of anodal tDCS delivery in the left S1 along retention of superior tactile acuity was observed at follow-up four weeks after the application of tDCS. Thus, we demonstrate long-term effects that repeated tDCS imposes on somatosensory functioning. This is the first study to provide insight into the mode of operation of tDCS on the brain's response to long-term perceptual learning, adding an important piece of evidence from the domain of non-invasive brain stimulation to show that functional changes detectable by fMRI in primary sensory cortices participate in perceptual learning.

show abstract

Section: Methodsmentioning

confidence: 95%

Behavioural and neurofunctional impact of transcranial direct current stimulation on somatosensory learning

Hilgenstock

Weiß

Huonker

et al. 2016

Human Brain Mapping

View full text Add to dashboard Cite

show abstract

“…Dual-hemisphere tDCS, which excites one hemisphere and inhibits the other, is a powerful strategy to improve behavioral performance [14,[22][23][24][25]. The mechanisms underlying improved performance observed with dual-hemisphere tDCS may be the combined effect of increased excitability in one hemisphere and decreased excitability in the other, likely via interhemispheric connections [10,14,25].…”

Section: Introductionmentioning

confidence: 96%

Dual-hemisphere transcranial direct current stimulation over primary motor cortex enhances consolidation of a ballistic thumb movement

Koyama

Tanaka

Tanabe

et al. 2015

Neuroscience Letters

Self Cite

View full text Add to dashboard Cite

Transcranial direct current stimulation (tDCS) is a noninvasive technique that modulates motor performance and learning. Previous studies have shown that tDCS over the primary motor cortex (M1) can facilitate consolidation of various motor skills. However, the effect of tDCS on consolidation of newly learned ballistic movements remains unknown. The present study tested the hypothesis that tDCS over M1 enhances consolidation of ballistic thumb movements in healthy adults. Twenty-eight healthy subjects participated in an experiment with a single-blind, sham-controlled, between-group design. Fourteen subjects practiced a ballistic movement with their left thumb during dual-hemisphere tDCS. Subjects received 1mA anodal tDCS over the contralateral M1 and 1mA cathodal tDCS over the ipsilateral M1 for 25min during the training session. The remaining 14 subjects underwent identical training sessions, except that dual-hemisphere tDCS was applied for only the first 15s (sham group). All subjects performed the task again at 1h and 24h later. Primary measurements examined improvement in peak acceleration of the ballistic thumb movement at 1h and 24h after stimulation. Improved peak acceleration was significantly greater in the tDCS group (144.2±15.1%) than in the sham group (98.7±9.1%) (P<0.05) at 24h, but not 1h, after stimulation. Thus, dual-hemisphere tDCS over M1 enhanced consolidation of ballistic thumb movement in healthy adults. Dual-hemisphere tDCS over M1 may be useful to improve elemental motor behaviors, such as ballistic movements, in patients with subcortical strokes.

show abstract

“…Previous research suggested that for GOT dual-hemisphere tDCS over S1 with anodal elec-trode on the contralateral and cathodal on the ipsilateral hemisphere improved tactile discrimination in healthy adults significantly more than single hemisphere or sham tDCS [48]. It could also be shown that musicians' corpus callosum, a brain area connecting the two hemispheres, is bigger than that of non-musicians [49] and that there is more interhemispheric functional connectivity in musicians' than in non-musicians' brains [50].…”

Section: Effects Of Different Tdcs Conditionsmentioning

confidence: 97%

Effects of tDCS on tactile perception in musicians and non-musicians

Godde¹,

Dadashev²,

Karim³

2020

Preprint

View full text Add to dashboard Cite

Brain plasticity in somatosensory cortex can be facilitated by brain stimulation. To elucidate the relationship between the magnitude of plasticity and tactile performance with tactile expertise, we investigated the effects of transcranial direct current stimulation (tDCS) on tactile perception in musicians and non-musicians. At three separate days, 17 semi-professional musicians (e.g., piano or violin players) and 16 musical novices aged 18-27 years received 15 minutes of 1mA anodal (a-tDCS), cathodal (c-tDCS) or sham tDCS in a pseudorandomized design. Pre and post tDCS, tactile sensitivity (Touch Detection Task; TDT) and discrimination performance (Grating Orientation Task; GOT) were assessed. For further analysis, the weekly hours of instrument-playing and computer-typing were combined into a ‘tactile experience’ variable. For GOT, but not TDT, a significant group effect at baseline was revealed with musicians performing better than non-musicians. TDT thresholds, were significantly reduced after a-tDCS but not c-tDCS or sham stimulation. While both experts’ and novices’ performance improved after anodal stimulation, neither musical nor tactile expertise were directly associated with the magnitude of this improvement. Low performers in TDT with high tactile experience profited most from a-tDCS. We conclude that tactile expertise may facilitate somatosensory cortical plasticity and tactile learning in low performers.

show abstract

Dual-hemisphere transcranial direct current stimulation improves performance in a tactile spatial discrimination task

Cited by 37 publications

References 50 publications

Behavioural and neurofunctional impact of transcranial direct current stimulation on somatosensory learning

Behavioural and neurofunctional impact of transcranial direct current stimulation on somatosensory learning

Dual-hemisphere transcranial direct current stimulation over primary motor cortex enhances consolidation of a ballistic thumb movement

Effects of tDCS on tactile perception in musicians and non-musicians

Contact Info

Product

Resources

About