41. Conduction aphasia is caused by damage to the parietal lobe of the brain. 42. In the late 19th century, Paul Broca studied patients with expressive aphasia . 43. This treatment intervention is known as Constraint Induced Aphasia Therapy ( CIAT ). 44. Transcortical sensory aphasia is characterized as a fluent aphasia. 45. Transcortical sensory aphasia is characterized as a fluent aphasia . 46. Most cases of those with amusia do not show any symptoms of aphasia . 47. The acquired language disorders that are associated to brain activity are called aphasias . 48. Programmed instruction had some clinical success in aphasia rehabilitation. 49. Communication boards are extremely functional and help patients with aphasia communicate their needs. 50. However, a standardized assessment may provide further information regarding an aphasia classification.