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Abstract #3421

Abnormalities of the Attentional Network Following Traumatic Brain Injury in Pediatric Patients: A fMRI Study

Paola Valsasina 1 , Maria A. Rocca 1 , Sandra Strazzer 2 , Ermelinda De Meo 1 , Erika Molteni 2 , Monica Recla 2 , Susanna Galbiati 2 , Alessandra Bardoni 2 , Giancarlo Comi 3 , and Massimo Filippi 1

1 Neuroimaging Research Unit, Institute of Experimental Neurology, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, MI, Italy, 2 Sci. Inst. IRCCS E. Medea, Bosisio Parini, LC, Italy, 3 Department of Neurology, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, MI, Italy

Aim of this study was to explore abnormalities of functional MRI (fMRI) activity during a sustained attention task in pediatric patients with traumatic brain injury (TBI). FMRI scans were acquired from 22 pediatric TBI patients and 7 healthy controls during the Conners Continuous Performance Test. Compared with controls, patients had a significantly broader pattern of fMRI activation in frontal, parietal and temporal regions; however, contrary to controls, they failed to increase activity in occipito-temporal areas with increasing task difficulty. The abnormal recruitment of the attentional network might contribute to explain the attentional deficits frequently observed in pediatric TBI.

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