History
Conduction Aphasia was first described in 1874 by Carl Wernicke after seeing two patients who had relatively good comprehension but paraphasic speech and anomia (Baldo, Klostermann, and Dronkers, 2008).
Traditionally, the cause has been attributed to damage to the arcuate fasciculus. The arcuate fasciculus is a bundle of nerve fibers located below the supramarginal gyrus in the temporal lobe that connects the two major language centers, Wernicke’s and Broca’s areas. However, damage to the arcuate fasciculus is not a prerequisite of conduction aphasia.
Most available anatomical evidence suggests that this particular aphasia is most often caused by damage to the left superior temporal gyrus and/or the left supramarginal gyrus (a region centered around the posterior portion of the Sylvian fissure) (Buchsbaum et al., 2011); (McCaffrey, 2008).