Clinical Trial with two groups, transcranial direct current stimulation aplication and sham; triple blinded. The protocol is applied 5 consecutive days during the training of a manual dexterity task. Manual dexterity and somatosensory variables are measured pre intervention, post one day of intervention, post 5 days of intervention, and 5 days after finish the intervention.

Clinical Trial with two groups, transcranial direct current stimulation aplication (1 mA ) and sham (ramp up and down of 30 seconds in total) . Bouth interventions will last 20 minutes; at the same time of the aplication bouth are going to train the manual dexterity with Purdue Pegboard Test.

This protocol is applied 5 consecutive days, also it have a follow up of 5 days more.

It is triple blinded. Manual dexterity and somatosensory variables are measured pre intervention, post one day of intervention, post 5 days of intervention, and 5 days after finish the intervention.

Inclusion Criteria:

• healthy volunteers

Exclusion Criteria:

• metal or skin lesions on the head
• brain stimulation in the last 6 months
• family history of epilepsy or seizures
• pacemaker or any cardiac involvement
• inability to understand or execute the task
• taking drugs that may influence cognition
• pregnancy

The individual praticipant data is going to be anonymized. Also, the participants are going to sing the consent of shareing his personal data.

Just before the clinical trial will be ended, and in an unlimited frame of time.

With resaserches that will need this information for another studies.