Volume 7, Issue 1 (Spring 2005)                   2005, 7(1): 1-9 | Back to browse issues page

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Tehranidoust M, Azadi B, Sedigh A, Ashrafi M, Alaghbandred J. Executive Dysfunction in Treated Phenylketonuric Patients. Advances in Cognitive Science. 2005; 7 (1) :1-9
URL: http://icssjournal.ir/article-1-112-en.html
Abstract:   (498 Views)
Objective: The Previous studies on early and continuously treated patients with phenylketonuria (PKU), even with normal intelligent quotient (IQ), have revealed executive dysfunction; this study is aiming at further evaluating the differences in executive functions of early treated PKU patients compared to normal subjects. 
Method: Ten early treated children with PKU who had normal IQs were compared with 15 normal children matched for sex, age and IQ, using three neuropsychological tests: Tower of  London  test (TOL) (computerized version), Continuous Performance Test (CPT) and Stroop Test. 
Results: Patients had poorer performance on TOL task than the control group. This difference was significant in the first three levels of the test. In CPT, the number of omission errors in the cases was significantly more than those in the control group. However, there was no significant difference in comission errors between the two groups. There was no correlation between concurrent serum phenylalanine and tests results. 
Conclusion: This Study demonstrated the executive dysfunction of early treated PKU patients despite their normal IQs. The dysfunction was more obvious in the aspects of planning and attention.
Full-Text [PDF 282 kb]   (259 Downloads)    
Type of Study: Research | Subject: Special
Received: 2004/11/22 | Accepted: 2005/01/20 | Published: 2005/03/21

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