Study: NCT01404039

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Motor Learning
Description: Subject will have to draw a set of shapes and words during 20 minutes.

Intervention type: BEHAVIORAL
Group type: PLACEBO_COMPARATOR
Intervention: Motor Learning
Description: Subject will have to draw a set of shapes and words during 20 minutes.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Motor Learning
Description: Subject will have to draw a set of shapes and words during 20 minutes.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Somatosensory Learning
Description: Subjects will perform a learning task involving sensory activation of the hand. The task will consist of learning letters of Braille.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Somatosensory Learning
Description: Subjects will perform a learning task involving sensory activation of the hand. The task will consist of learning letters of Braille.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Somatosensory Learning
Description: Subjects will perform a learning task involving sensory activation of the hand. The task will consist of learning letters of Braille.

Intervention type: BEHAVIORAL
Group type: PLACEBO_COMPARATOR
Intervention: Somatosensory Learning
Description: Subjects will perform a learning task involving sensory activation of the hand. The task will consist of learning letters of Braille.

Intervention type: BEHAVIORAL
Group type: PLACEBO_COMPARATOR
Intervention: Observational Task
Description: Subjects will watch a 10 second video of a right-handed person performing movements of their left index finger. Subjects will be instructed to watch the video without any other specific instruction.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Observational Task
Description: Subjects will watch a 10 second video of a right-handed person performing movements of their left index finger. Subjects will be instructed to watch the video without any other specific instruction.

Intervention type: BEHAVIORAL
Group type: PLACEBO_COMPARATOR
Intervention: Mental Imagery
Description: Subjects will be asked to perform mental imagery of motor practice - finger movements of the left hand for 10 minutes.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Mental Imagery
Description: Subjects will be asked to perform mental imagery of motor practice - finger movements of the left hand for 10 minutes.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: transcranial direct current stimulation
Description: Subjects will undergo active and sham tDCS stimulation in a randomized and counterbalanced order. During both active and sham stimulation, we will use electrodes of 35cm\^2, intensity of 2mA for a duration of 20 minutes. The anode electrode will be placed over the right primary motor cortex (M1) and the cathode will be placed over the contralateral supraorbital area. For active stimulation, the current will be on for the duration of 20 minutes. For sham stimulation, the current will ramp up, and then down again for 30 seconds to simulate the sensation of active tDCS.

Intervention type: DEVICE
Group type: PLACEBO_COMPARATOR
Intervention: transcranial direct current stimulation
Description: Subjects will undergo active and sham tDCS stimulation in a randomized and counterbalanced order. During both active and sham stimulation, we will use electrodes of 35cm\^2, intensity of 2mA for a duration of 20 minutes. The anode electrode will be placed over the right primary motor cortex (M1) and the cathode will be placed over the contralateral supraorbital area. For active stimulation, the current will be on for the duration of 20 minutes. For sham stimulation, the current will ramp up, and then down again for 30 seconds to simulate the sensation of active tDCS.