V5/MT Stimulation on Reading and Reading-related Measures in Developmental Dyslexia

For HD-tDCS a 4 × 1 montage (Kessler et al., 2013), small circular electrodes (diameter 1 cm) will be used with the anode placed centrally with a current intensity of 1 mA for a total of 20 minutes (30 s ramp up/down). Hereby, the anodal electrode modulates the excitability of the targeted area left V5/MT, whereas the other 4 electrodes return electrical currents that flow away from that area. V5/MT will be localised via published procedures and electrode's placement will be done according to the 10-20 International EEG 10-20 System for electrode placement.

For HD-tDCS a 4 × 1 montage (Kessler et al., 2013), small circular electrodes (diameter 1 cm) will be used with the anode placed centrally with a current intensity of 1 mA for a total of 20 minutes (30 s ramp up/down). Hereby, the anodal electrode modulates the excitability of the targeted area left V1, whereas the other 4 electrodes return electrical currents that flow away from that area. V1 will be localised via published procedures and electrode's placement will be done according to the 10-20 International EEG 10-20 System for electrode placement.

Sham HD-tDCS will be delivered over left V5/MT or left V1. The same electrodes placement as well as the stimulation set-up will be used as in the active stimulation conditions, but the current will be applied for 30 s and will be ramped down (0 mA) during the rest of the session without the participants awareness. .