Antonio & Hanna Damasio believe
that the brain processes language
by means of three interacting sets of structures:
| sensory and motor representations | achromatopsia: damage to the occipital region containing areas V2 and V4 - loss of the ability to perceive AND imagine colors. |
| phoneme representations, combinations & syntactic rules for combining words (primarily left hemisphere) | lesions to left posterior temporal and inferior parietal cortex - impaired ability to produce proper word morphology, e.g., "buh" for "blue" (This is a general impairment: not particular to color.) |
| mediation between concepts and the production of word-forms | Color anomia: Damage to the temporal segment of the left lingual gyrus. Experience color normally and can match and discriminate colors nonverbally, but cannot name colors. |