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Conflicting reports exist concerning the effect aspartame (APM, l-aspartyl-l-phenylalanine methyl ester) has upon brain biogenic amines. In the following study, in vivo voltammetry was utilized to measure evoked extracellular dopamine (DA) levels in the striatum of rats in order to assess APM's effect. Time-course experiments revealed a significant decline in evoked extracellular DA levels within...