Journal
HUMAN BRAIN MAPPING
Volume 32, Issue 2, Pages 240-248Publisher
WILEY-LISS
DOI: 10.1002/hbm.21013
Keywords
fMRI; trail making test; computer peripherals; fMRI equipment; fMRI compatibility; input devices; stylus
Funding
- Heart and Stroke Foundation of Ontario
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Writing and drawing are understudied with fMRI, partly for lack of a device that approximates these behaviors well while supporting task feedback and quantitative behavioral logging in the confines of the magnet. Consequently, we developed a tablet based on touchscreen technology that is accurate, reliable, relatively inexpensive, and fMRI compatible. After confirming fMRI compatibility, we conducted preliminary fMRI experiments examining the neural correlates of a widely used pen-and-paper neuropsychological assessment, the trail making test. In two subjects, we found left hemisphere frontal lobe activations similar to the major results of a previous group study, and we also noted individual differences mostly in the right hemisphere. These results demonstrate the utility of the new tablet for adaptations of pen-and-paper tests and suggest possible uses of the tablet for longitudinal, within-subjects studies of disease or therapy. We also discuss using the tablet for several other types of tests requiring many, continuous, or two-dimensional responses that were previously very difficult to perform during fMRI. Hum Brain Mapp 32: 240-248, 2011. (C) 2010 Wiley-Liss, Inc.
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