Previous fMRS studies at 7T have shown changes in brain metabolite levels elicited by different stimuli. This 3T study employed a modified version of PRESS to effectively measure neurochemical changes generated by a finger tapping task during the MRS scan. The results show lactate in the motor cortex increased approximately 11%, while glutamate and aspartate trend toward a 2% increase and 3% decrease respectively. More subjects are required for further validation.
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