Individuals with aphasia (assessed using the Boston Aphasia Diagnostic Test) who perform the Naming Task in the range of 10%-60% accuracy will be included in the study. The final score in the Naming Task will be estimated from the two baseline measurements.  Inclusion Criteria:  diagnosis of aphasia: Broca's or mixed (based on the assessment of a neuropsychologist or referring physician; presence of a focus of injury in the left hemisphere (within one hemisphere only) as a result of the first ischemic or hemorrhagic stroke (based on CT/MRI examination); chronic stage of the disease - time since the stroke occurred over 6 months; ability to achieve an accuracy in the Naming Task of 10-60%; 18-80 years  Exclusion Criteria:  none right-handedness before the stroke; ability to give informed written consent; fluency in English.