chapter  8
30 Pages

Executive Disorders

In relation to behaviour, medial lesions may be linked to akinetic mutism with reduced spontaneous behaviour and difficulties in the initiation of speech. Medial lesions or lesions to the anterior convexity or frontal poles are also linked to a pseudodepressed syndrome with reduced awareness and emotional blunting. Orbital lesions are linked to euphoric behaviour, with hypomania, disinhibition, and disregard for ethical principles and the feelings of others (Fuster, 1989; Pennington & Ozonoff, 1996; Stuss & Benson, 1986).