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. 2015 Aug 11;59:10.3402/fnr.v59.28443. doi: 10.3402/fnr.v59.28443

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© 2015 Tilman J. Gaber et al.

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material for any purpose, even commercially, provided the original work is properly cited and states its license.

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Fig. 2 — Plasma concentrations of free tryptophan relative to large neutral amino acids (fTRP/LNAA ratio) at baseline (prior to AA intake) and at three time points after the intake of the acute tryptophan depletion (ATD) or balanced amino acid load (BAL) mixtures. The behavioral tasks were performed 180 min after AA intake. The error bars depict the standard error of the mean (SEM).