transcranial direct current stimulation / stimulation transcrânienne à courant direct
Synonyms: tDCS
Synonymes : stimulation transcrânienne à courant continu, tDCS
Group: Human, Neurology, Neuropsychology
Groupe : Homme, Neurologie, Neuropsychologie
Definition: "tDCS [transcranial direct current stimulation] involves the delivery of weak electrical currents (usually ranging from 1 to 2 mA) to the scalp by means of two electrodes, a positively-charged anode and a negatively-charged cathode. The current is thought to modulate the resting membrane potential of neurons depending on the polarity of the electrode, such that anodal stimulation induces depolarization of the membrane potential and increases cortical excitability, and cathodal stimulation induces hyperpolarization and decreases cortical excitability." (Galli et al., 2019, p. 231).
Définition : « La tDSC [stimulation transcrânienne à courant direct] repose sur l'administration de faibles courants électriques (généralement de 1 à 2 mA) sur le scalp au moyen de deux électrodes, une anode à charge positive et une cathode à charge négative. Le courant est censé moduler le potentiel membranaire de repos des neurones en fonction de la polarité de l'électrode, de sorte que la stimulation anodale induit une dépolarisation du potentiel membranaire et augmente l'excitabilité corticale, et la stimulation cathodale induit une hyperpolarisation et diminue l'excitabilité corticale. » (Galli et al., 2019, p. 231).
Broader term: neurophysiological method
Terme générique : méthode neurophysiologique
Selected bibliography: Brasil-Neto, J. P. (2012). Learning, memory, and transcranial direct current stimulation. Frontiers in Psychiatry, 3. https://doi.org/10.3389/fpsyt.2012.00080 [Study type: literature review / Access: open], Galli, G., Vadillo, M. A., Sirota, M., Feurra, M., & Medvedeva, A. (2019). A systematic review and meta-analysis of the effects of transcranial direct current stimulation (tDCS) on episodic memory. Brain Stimulation, 12(2), 231–241. https://doi.org/10.1016/j.brs.2018.11.008 [Study type: meta-analysis / Access: closed], Marković, V., Vicario, C. M., Yavari, F., Salehinejad, M. A., & Nitsche, M. A. (2021). A systematic review on the effect of transcranial direct current and magnetic stimulation on fear memory and extinction. Frontiers in Human Neuroscience, 15, 655947. https://doi.org/10.3389/fnhum.2021.655947 [Study type: literature review / Access: open]
Dataset citations: Bartl, G. (2019, August 29). Systematic review and network meta-analysis of tDCS effects on verbal episodic memory: Modelling heterogeneity of stimulation locations. https://osf.io/cfyvk, Baumert, A., Buchholz, N., Zinkernagel, A., & Schmitt, M. (2019, February 14). tDCS executive function. https://osf.io/ta5x4, Ellis, D., Brewer, G. A., & Laboratory, M. & A. C. (2019, May 24). Prospective Memory and Neural Stimulation (tDCS). https://osf.io/b8g3e, Friehs, M. A. (2021, May 6). DRM tDCS. doi:10.17605/OSF.IO/X5QAS, Medina, J. (2017, May 30). tDCS P-Curve analyses. https://osf.io/ts6zu, Pérez, C. R. (2021, July 5). Intervention with Virtual Reality and tDCS to improve working memory and functional autonomy after stroke: Single case study. https://osf.io/zcmfv, Vadillo, M. A., Sirota, M., Galli, G., & Medvedeva, A. (2018, November 16). A Systematic Review and Meta-Analysis of the Effects of Transcranial Direct Current Stimulation (tDCS) on Episodic Memory. https://osf.io/9cxeu