Implementation and validation of a stimulation protocol for oral language comprehension using functional magnetic resonance imaging: Preliminary results Implementación y validación de protocolo de estimulación por comprensión de lenguaje oral en resonancia magnética funcional: Resultados preliminares

Letelier A I.; Chabert S.; Vielma P J.

Abstract

This study aimed at implementing a stimu-lation protocol using functional Magnetic Resonance Imaging (fMRI), in a Hospital in Valparaiso (V Re-gion), Chile, to detect cortical areas activated in oral language comprehension. Seven healthy volunteers participated in this study. Average t-score and signal variation were 6.3±0.3 and 0.5±0.1%, respectively. In spite of these low values, activations were obtai-ned in Wernicke area, middle temporal gyrus, and Heschl's gyrus. The extension of activated areas was small, 5.06±2.99 cm3, probably due to amplifier low signal-to-noise ratio (SNR), in addition to the cognitive complexity of the task, and to the ambient acoustic noise. Successful implementation of fMRI protocols of language comprehension is possible in a clinical context in Chile without any additional resources.

Más información

Título de la Revista: REVISTA CHILENA DE RADIOLOGIA
Volumen: 16
Número: 2
Editorial: Universidad de Buenos Aires
Fecha de publicación: 2010
Página de inicio: 64
Página final: 69
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-77955138758&partnerID=q2rCbXpz