The effect of haloperidol on the passive avoidance habit retrieval upon amnesia was studied in C57BL/6J mice with aggressive and submissive behavioral stereotypes formed under agonist confrontation conditions. In the control (untreated) group, the efficacy of the amnesic action of detention in the dangerous compartment on the learning day was reduced for the aggressive stereotype as compared to the submissive one. In the aggressive mice, the administration of haloperidol (0.5 mg/kg) one hour before learning deteriorated the conditional reaction retrieval between 2nd and 13th days of test. In the submissive mice, the administration of haloperidol produced a prolonged antiamnesic effect. Thus, the effect of haloperidol on the violated memory trace reproduction depends on the individual behavioral state.
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Horm Behav
January 2025
School of Biological and Environmental Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK. Electronic address:
Within dominance hierarchies, individuals must interact in a rank-appropriate manner, thus behavior and its underlying neural mechanisms must change with social status. One such potential neural mechanism is arginine vasotocin (AVT), a nonapeptide which has been implicated in the regulation of dominance and aggression across vertebrate taxa. We investigated the relationship between social status, dominance-related behaviors, and vasotocin neuron counts in daffodil cichlids (Neolamprologus pulcher).
View Article and Find Full Text PDFProc Biol Sci
January 2025
Department of Ornithology, Max Planck Institute for Biological Intelligence, Eberhard-Gwinner Strasse, Seewiesen 82319, Germany.
The traditional narrative of the life cycle of migratory birds is that individuals perform long-distance movements between a breeding and a wintering site, but are largely resident at those sites. Although this pattern may apply to socially monogamous species with biparental care, in polygamous systems, the sex that only provides gametes may benefit from continuing to move and sample several potential breeding sites during a single breeding season. Such behaviour would blur the distinction between migration and breeding.
View Article and Find Full Text PDFCurr Zool
December 2024
School of Biological and Environmental Sciences, Liverpool John Moores University, 3 Byrom Street, Liverpool L3 3AF, UK.
Group living may engender conflict over food, reproduction, or other resources and individuals must be able to manage conflict for social groups to persist. Submission signals are an adaptation for establishing and maintaining social hierarchy position, allowing a subordinate individual to avoid protracted and costly aggressive interactions with dominant individuals. In the daffodil cichlid fish (), subordinates may use submission signals to resolve conflicts with dominant individuals and maintain their social status within the group.
View Article and Find Full Text PDFMol Psychiatry
November 2024
Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institute of Health, Research Triangle Park, NC, 27713, USA.
Neuronal activity in the hippocampus is critical for many types of memory acquisition and retrieval and influences an animal's response to stress. Moreover, the molecularly distinct principal neurons of hippocampal area CA2 are required for social recognition memory and aggression in mice. To interrogate the effects of stress on CA2-dependent behaviors, we chemogenetically manipulated neuronal activity in vivo during an acute, socially derived stressor and tested whether memory for the defeat was influenced.
View Article and Find Full Text PDFAm J Surg
January 2025
Sidney Kimmel Comprehensive Cancer Center and Department of Oncology, Johns Hopkins University School of Medicine, 1800 Orleans Street, Baltimore, MD, 21287, USA. Electronic address:
Background: Discrimination faced by Asian American trainees in medical school include those reported by female trainees. This study aims to characterize the microaggressions faced by Asian American woman medical students.
Methods: We use a mixed methods approach to characterize the experiences of Asian Americans in United States (US) medical schools through an anonymous online survey and participation in focus groups.
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