Transcranial Direct Current Stimulation (tDCS) explained | Neuroscience Methods 101
Ғылым және технология
Transcranial direct current stimulation, or tDCS, is a non-invasive brain stimulation technique, applying low intensity current to alter activation of the brain. Here, we explain how it works!
TDCS is applies a weak direct current to the head, which depolarizes or hyperpolarized the resting membrane potential of neurons in the targeted region. By itself, tDCS does not induce action potentials. Rather, it influences the likelihood of spontaneous firing. Although tDCS is valuable for neuroscience, to date, the effects are variable. This variability can be reduced by personalizing tDCS protocols.
Narrated by: Miles Wischnewski
References:
Chase, H. W., Boudewyn, M. A., Carter, C. S., & Phillips, M. L. (2020). Transcranial direct current stimulation: a roadmap for research, from mechanism of action to clinical implementation. Molecular psychiatry, 25(2), 397-407. doi.org/10.1038/s41380-019-04...
Fregni, F., El-Hagrassy, M. M., Pacheco-Barrios, K., Carvalho, S., Leite, J., Simis, M., Brunelin, J., Nakamura-Palacios, E. M., Marangolo, P., Venkatasubramanian, G., San-Juan, D., Caumo, W., Bikson, M., Brunoni, A. R., & Neuromodulation Center Working Group (2021). Evidence-Based Guidelines and Secondary Meta-Analysis for the Use of Transcranial Direct Current Stimulation in Neurological and Psychiatric Disorders. The international journal of neuropsychopharmacology, 24(4), 256-313. doi.org/10.1093/ijnp/pyaa051
Stagg, C. J., Antal, A., & Nitsche, M. A. (2018). Physiology of Transcranial Direct Current Stimulation. The journal of ECT, 34(3), 144-152. doi.org/10.1097/YCT.000000000...
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Пікірлер: 6
very interesting. i recently picked up a tdcs device for use in aim training, a fine motor skill. apparently, it works at the cost of left-handed performance, which is perfectly acceptable, given the much more right-handed (or whichever hand you use to hold the mouse) nature of first-person shooters.
@mipacem
Жыл бұрын
@@sulaim4n180 idk here seems fine, also i got uh too lazy to do tdcs every day so, yeah; ill wait for more concrete studies
1:23 The graphic is wrong, a 9 V battery can deliver around 500 mA @ 9 V, more than a hundred times the 1-4 mA used by TDCS.
@real.psyched
9 ай бұрын
The amount of mA depends on the conductance. With a a conductance of 1 kOhm, 1V corresponds to 1mA. Impedance of human skin varies anywhere between 1 and 25 kOhm, depending on how well you prep. As such, 9 volts is not unrealistc. Most tDCS machines ha a range up to 25 volts