Chunk #9 — MATERIALS AND METHODS — Alcohol exposure — Alcohol SA—Progressive ratio

Source

Stress vulnerability promotes an alcohol-prone phenotype in a preclinical model of sustained depression.

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Animals were subjected to five 2‐hour progressive ratio (PR) sessions, during which the effort (number of nose pokes) to obtain a reward was progressively increased according to response ratio = (5e(0.2*reward number)) – 5, rounded to the nearest integer.