Fig. 1: Freezing responses and 22 kHz vocalizations during pre-exposure. | Communications Biology

Fig. 1: Freezing responses and 22 kHz vocalizations during pre-exposure.

From: Audible pain squeaks can mediate emotional contagion across pre-exposed rats with a potential effect of auto-conditioning

Fig. 1

a Animals that received shocks during pre-exposure (red and yellow) showed higher freezing responses during pre-exposure than animals not receiving shocks (lilac). Freezing was comparable in magnitude for the two shock groups. Freezing was analyzed for all 24 animals tested in Experiment 1. b 22 kHz vocalizations for animals that received shocks during pre-exposure. Note that USVs were recorded for five animals from the Shock → Control and five animals from the Shock → Squeak group only, and no USVs were available for the NoShock group. Boxplots reflect the median, the first and third quartile, and the interquartile range.

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