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- W2957100429 abstract "Discrimination between sensory stimuli associated with safety and threat is crucial for behavioral decisions. Discriminative conditioning paradigms with two acoustic conditioned stimuli (one paired with shock [CS+], the other unpaired with shock [CS−]) have been widely used as an experimental model for fear learning. However, no attention has been paid to the effect of the CS− on safety in the paradigms, because the CS− served as a neutral cue or elevated the freezing level due to fear generalization although less effectively than the CS+. By using a noise and a tone as two acoustic CSs in a discriminative auditory fear conditioning (AFC) paradigm, here we demonstrate that mice learn safety for the CS− while showing fear for the CS+ with opposing emotional behaviors. We found that after learning mice exhibited a significant suppression of context-dependent freezing during the CS−, but not during the CS+, indicating learned safety without fear generalization for the CS−. In contrast, the mice showed an enhanced level of freezing during the CS+ even in a novel spatial context, indicating cued fear for the CS+. Moreover, the CS+ also induced rapid defensive behaviors, whereas the CS− disinhibited normal exploratory behaviors. On the other hand, mice showed no significant suppression of contextual fear during the CS− in a paradigm with a pair of tone CSs at different frequencies, although they clearly discriminated the two tones. These results suggest our AFC paradigm with the noise and tone CSs as a useful experimental model for cue-dependent discriminative learning of safety and threat." @default.
- W2957100429 created "2019-07-23" @default.
- W2957100429 creator A5052661219 @default.
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- W2957100429 date "2019-07-15" @default.
- W2957100429 modified "2023-10-18" @default.
- W2957100429 title "Cue-dependent safety and fear learning in a discriminative auditory fear conditioning paradigm in the mouse" @default.
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- W2957100429 doi "https://doi.org/10.1101/lm.049577.119" @default.
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