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CC-BY-NC 4.0 International license peer-reviewed) is the author/funder. It is made available under a The copyright holder for this preprint (which was not. Abstract: Rats help conspecifics by releasing them from a restrainer only when they have previous social experience with the strain of the restrained rat. When rats have been cross-fostered with rats of(More)
Despite decades of research with humans, the biological mechanisms that motivate an individual to help others remain poorly understood. In order to investigate the roots of pro-sociality in mammals, we established the helping behavior test, a paradigm in which rats are faced with a conspecific trapped in a restrainer that can only be opened from the(More)
The role of brain-gut peptide galanin in the regulation of prolactin (PRL) and beta-endorphin (beta-EP) release from anterior pituitary lobe was studied in vivo in conscious male rats and in vitro with cultured anterior pituitary cells of the rat. Galanin (1 microgram or 3 micrograms/rat) injected into the third cerebral ventricle of rats produced highly(More)
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