“…A nonprogressive cognitive impairment is observed in about one-third of DMD patients, compared to age-matched normal boys or patients suffering from other neuromuscular disorders, such as spinal muscular atrophy (Billard et al, 1992). It has been reported that some cognitive functions are more affected than others (Billard et al, 1992;Nicholson et al, 1993;Bresolin et aL, 1994): verbal IQ, reading abilities, syntax comprehension, attention, story recall, and differed verbal recognition are particularly impaired in DMD patients. However, no overt morphological abnormalities were detected in the central nervous system (CNS) of 21 DMD patients (Dubowitz and Crome, 1969).…”