Second Speech Area
Location: to draw a parallel line along the anterio-posterior median line through the parietal tuber and take a section of 3 cm in length from the point 2 cm behind the tuber.
Function: anomic aphasia.
Third Speech Area
Location: To draw an extending line backward from the midpoint of dizziness and auditory area, 4 cm in length.
Function: sensory aphasia.
Application Area
Location: To draw a line from parietal tuber to the center of mastoid process and draw two more lines from the same origin of the first line at the tuber, one in front of the first line and another one behind the first line with an angle of 40 degree between the first line and each of the latter lines, all 3 cm in length.
Function: parectropia
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