The apparatus for FST involved a glass transparent cylinder measured 18 cm in diameter and 19 cm in height and filled with water (25 °C) up to 13 cm in depth. On day 1 each animal was placed in the cylinder for 15 min, and on day 2 – for 5 min (Porsolt et al. 1977). The behaviour was recorded by Biobserve Viewer III (Biobserve GmbH, Germany), and the following parameters were calculated manually: the latent period of the first floating episode and the total floating time on day 2 (Müller et al. 2017 (link); Mielenz et al. 2018 (link)).
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