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. 2022 Feb 7;53(8):3437–3447. doi: 10.1017/S003329172100550X

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© The Author(s) 2022

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.

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Fig. 1. — Schematic of the experimental procedure to test the effects of a 28-day intake of placebo or a multispecies probiotic on emotional processing in people with moderate depression. PHQ-9, Patient Health Questionnaire-9; SCID-5, Structural Clinical Interview for the DSM-V Axis I Disorders; PANAS, Positive And Negative Affective Scale; STAI, State/Trait Anxiety Inventory; EPQ, Eysenck personality Questionnaire; ETB, Emotional Processing Test Battery; PILT, Probabilistic instrumental learning task; AVLT, Auditory verbal learning task.