Figure 3.

Performance of the ALZ patients (ALZ) and the controls subjects (CTL) in the letter and color discrimination tasks. Results obtained when the letters were presented in each hemifield (A) or when they were reorganized so as to show intra- vs. interhemispheric performance (B). Experimental apparatus (C) used to assess intra- and interhemispheric comparisons of letters and colors. Results obtained when color plates were presented within each hemifield (D) or when rearranged to show intra- vs. interhemispheric performance (E).