This study aims at combining imaging techniques and clinical evaluations to assess clinical change as well as brain changes that occur as a result of brain stimulation in adult attention deficit disorder.

This study will use clinical measures and cognitive tasks covering 3 different functional domains during functional magnetic resonance imaging (fMRI), ElectroEncephaloGram (EEG) and Ultrasound tagged near infrared spectroscopy (UT-NIRS), to assess functional brain changes as a result of a treatment protocol with Transcaranial direct current stimulation (tDCS) in adults suffering from attention deficit disorder (ADD).

Inclusion Criteria:

1. Patients between the ages of 18-65(male and female)
2. Diagnosed as suffering from Attention-Deficit Hyperactivity Disorder according to the DSM IV
3. Patients taking medication for ADHD will give their consent to stop those medication 48 before entering the study and throughout the daily treatments.
4. Gave informed consent for participation in the study
5. If referred by the treating psychiatrist, he or she approves of the subjects participation in the study

Exclusion Criteria:

1. Suffering from other diagnosis on axis 1
2. History of drug or alcohol abuse during the last year
3. Inability to achieve satisfying level of communication with the subject