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- W2974691444 endingPage "112546" @default.
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- W2974691444 abstract "Animals utilize a variety of auditory and visual cues to navigate the landscape of fear. For some species, including corvids, dead conspecifics appear to act as one such visual cue of danger, and prompt alarm calling by attending conspecifics. Which brain regions mediate responses to dead conspecifics, and how this compares to other threats, has so far only been speculative. Using 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) we contrast the metabolic response to visual and auditory cues associated with a dead conspecific among five a priori selected regions in the American crow (Corvus brachyrhynchos) brain: the hippocampus, nidopallium caudolaterale, striatum, amygdala, and the septum. Using a repeated-measures, fully balanced approach, we exposed crows to four stimuli: a dead conspecific, a dead song sparrow (Melospiza melodia), conspecific alarm calls given in response to a dead crow, and conspecific food begging calls. We find that in response to observations of a dead crow, crows show significant activity in areas associated with higher-order decision-making (NCL), but not in areas associated with social behaviors or fear learning. We do not find strong differences in activation between hearing alarm calls and food begging calls; both activate the NCL. Lastly, repeated exposures to negative stimuli had a marginal effect on later increasing the subjects’ brain activity in response to control stimuli, suggesting that crows might quickly learn from negative experiences." @default.
- W2974691444 created "2019-09-26" @default.
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- W2974691444 creator A5084957690 @default.
- W2974691444 creator A5088951284 @default.
- W2974691444 date "2020-05-01" @default.
- W2974691444 modified "2023-10-18" @default.
- W2974691444 title "Brain activity underlying American crow processing of encounters with dead conspecifics" @default.
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- W2974691444 doi "https://doi.org/10.1016/j.bbr.2020.112546" @default.
- W2974691444 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32035868" @default.
- W2974691444 hasPublicationYear "2020" @default.
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