Dergi Ara >>
Yıl:2010; Cilt: 21; Sayı: 3>> Özet
TAM METİN
Türk Psikiyatri Dergisi; 2010;21(3):249-256
Gelişmiş Takvim Belleği Becerisi Sergileyen Bir Asperger Sendromu Olgusu
AE Şevik, EÇ Kültür, H Demirel, KK Oğuz, O Akça, EL Ergün, B Demir
Kastamonu Devlet Hastanesi
Yaygın gelişimsel bozukluğu olan hastalarda izole olarak belli bazı alanlarda normalin üstünde beceriler (savant
sendromu) görülebilmektedir. Bu yazıda 18 yaşında olan ve gelişmiş takvim belleği becerisi sergileyen bir Asperger
Sendromu olgusunun klinik özellikleri, nöropsikolojik değerlendirme ve beyin görüntüleme çalışmaları (fMRG
ve SPECT) bulguları sunulmuştur; nöropsikolojik değerlendirmede hastanın dikkat, bellek ve problem çözme becerilerinde
hafif; yürütücü işlevlerinden kavramsallaştırma, kategori oluşturma ve soyut düşünme becerilerinde
ileri derecede bozulma tespit edildi. Beyin görüntüleme çalışmalarında fMRG�de bilateral inferior paryetal lobül,
prekuneus, superior ve orta frontal girus ve medyal frontal kortekste eşik değerini geçen (p<0.05) aktivasyon
ve beyin SPECT değerlendirilmesinde istirahat durumu ile karşılaştırıldığında sağ frontal kortekste, sağ paryetal
korteksi de içine alacak şekilde hipoperfüzyonun belirginleştiği görüldü. Sol frontal kortekste bazal kan akımında
artış saptandı. Ayrıca, sağ paryeto-oksipital kortekste hipoperfüzyon, sağ bazal ganglionda simetriğine göre, hipoperfüzyon
saptandı. Bu bulgular ilgili literatür bilgileri ışığında tartışıldı.
Asperger Syndrome with Highly Exceptional Calendar Memory: A Case Report
Some patients with pervasive developmental disorders develop unusual talents, which are characterized as savant
syndrome. Herein we present neuropsychological examination and brain imaging (fMRI and brain SPECT) findings
of an 18- [year]-old male with Asperger syndrome and highly unusual calendar memory. Neuropsychological
evaluation of the case indicated mild attention, memory, and problem solving deficits, and severe executive
function deficits that included conceptualization, category formation, and abstraction. Functional MRI findings
showed activation above the baseline level (P < 0.05) in the bilateral inferior parietal lobule, precuneus, superior
and middle frontal gyri, and medial frontal cortex. Brain SPECT findings, in comparison to rest-SPECT findings,
showed that there was hypoperfusion in some brain regions, including the right frontal cortex and right parietal
cortex. Baseline blood perfusion in the left frontal cortex was also observed, as well as hypoperfusion in the right
parietal-occipital cortex and in the right basal ganglion (compared to the left side). The results of the present
study and further research will contribute to our understanding of calendar memory and savant syndrome.

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