Mapping Cognitive Functions: Fmrı Localisation of Serial Digit Learning Test

Abstract

Serial digit learning test (SDLT) is traditionally related to mesial temporal lobes. Assequencing is closely related to the frontal lobes, SDLT is also thought to activate these areas. In this study, hypothesised frontal activations are investigated with fMRI.Materials and Methods: "Motor-SDLT", developped for functional imaging, was administered to 4 subject on 1.0 T magnetic field.Results: In all subjects studied, SDLT-correlated activations were detected in the inferior parts of the frontal lobes, most prominent near the right orbital gyri.Conclusion: Results of this study are consistent with the hypothesised frontal activation. The absence of such findings in the relevant literature may originate from the lack of use of proper techniques for these activations.