La metodica di risonanza magnetica funzionale (fMRI) permette di esplorare le funzioni cognitive in vivo sull'uomo in modo non invasivo. In questo studio presentiamo i primi risultati di un progetto volto alla localizzazione delle aree cerebrali del linguaggio a scopo clinico per la valutazione prechirurgica e per il controllo riabilitativo di pazienti cerebrolesi. Sono stati studiati 10 soggetti sani destrimani e un paziente cerebroleso sinistro. È stata valutata la differenza di segnale di risonanza registrato con sequenza ecoplanare gradient-echo sensibile al segnale T2* comparando volumi cerebrali acquisiti in blocchi di 30 secondi. I soggetti eseguivano alternativamente un compito di decisione lessicale o un compito di decisione grafemica. I risultati dei dati ottenuti dai pazienti di controllo indicano una elevata sensibilità del test mettendo in evidenza tutte le aree note coinvolte nelle funzione linguistiche. L'analisi dei dati ottenuti dal paziente cerebroleso suggeriscono che il protocollo di studio descritto può essere applicato con successo allo studio delle funzioni linguistiche anche in presenza di danno cerebrale.
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