Dyslexia is a cognitive disorder characterized by a high rate of decoding errors when reading printed materials [1]–[4]. Studies have suggested that cognitive errors are monitored by an error detection mechanism that can be identified during task performance by two Event-Related Potentials (ERP) on an on-going electroencephalogram (EEG): error- related negativity (ERN) and correct-related negativity (CRN) [5]–[7]. The ERN and the CRN components are evoked 0–160 ms following an erroneous or a correct response, respectively [5]–[7].