Behavioral neuroscience has successfully and in great detail deconstructed circuit mechanisms underlying fear behaviors using reductionist approaches. Recent research in more naturalistic settings now reveals additional higher-level organization, where hypothalamic circuits multiplex threat detection and fear memory updating to safely navigate complex environments.
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Neuroethology: Fear outside the box.
Curr Biol
July 2024
Department of Neuronal Cell Biology, Center for Brain Research, Medical University of Vienna, Vienna, Austria; Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, 1030 Vienna, Austria. Electronic address:
Behavioral neuroscience has successfully and in great detail deconstructed circuit mechanisms underlying fear behaviors using reductionist approaches. Recent research in more naturalistic settings now reveals additional higher-level organization, where hypothalamic circuits multiplex threat detection and fear memory updating to safely navigate complex environments.
View Article and Find Full Text PDFAlarm or emotion? intranasal oxytocin helps determine information conveyed by dog barks for adult male human listeners.
BMC Ecol Evol
January 2024
Neuroethology of Communication Lab, Department of Ethology, Eötvös Loránd University, Budapest, Hungary.
Background: Barks play an important role in interspecific communication between dogs and humans, by allowing a reliable perception of the inner state of dogs for human listeners. However, there is growing concern in society regarding the nuisance that barking dogs cause to the surrounding inhabitants. We assumed that at least in part, this nuisance effect can be explained by particular communicative functions of dog barks.
View Article and Find Full Text PDFAre Predator Smell (TMT)-Induced Behavioral Alterations in Rats Able to Inhibit Seizures?
Chem Senses
May 2020
Neurosciences and Behavioral Sciences Departament, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
We aimed to evaluate the chemical and behavioral effects of 2,5-dihydro-2,4,5-trimethylthiazoline (TMT) after olfactory exposure and to verify their influence in the expression of acute audiogenic seizures in the Wistar Audiogenic Rat (WAR) strain. PROTOCOL 1: TMT gas chromatography was applied to define odor saturation in a chamber to different concentrations, time required for saturation and desaturation, and if saturation was homogeneous. Also, male Adult Wistar rats were exposed to saline (SAL) or to different TMT concentrations and their behaviors were evaluated (neuroethology).
View Article and Find Full Text PDFEncoding lateralization of jump kinematics and eye use in a locust via bio-robotic artifacts.
J Exp Biol
January 2019
The BioRobotics Institute, Sant'Anna School of Advanced Studies, Viale Rinaldo Piaggio 34, 56025 Pontedera, Pisa, Italy.
The effect of previous exposure to lateral sensory stimuli in shaping the response to subsequent symmetric stimuli represents an important overlooked issue in neuroethology, with special reference to arthropods. In this research, we investigated the hypothesis to 'programme' jumping escape direction as well as surveillance orientation in young and adult individuals of as an adaptive consequence of prior exposure to directional-biased predator approaches generated by a robotic leopard gecko representing The manipulation of the jumping escape direction was successfully achieved in young locusts, although young did not exhibit innately lateralized jumping escapes. Jumping escape direction was also successfully manipulated in adult locusts, which exhibited innate lateralized jumping escape at the individual level.
View Article and Find Full Text PDFCannabinoid modulation of zebrafish fear learning and its functional analysis investigated by c-Fos expression.
Pharmacol Biochem Behav
February 2017
University of Bonn, Institute for Zoology, Dept. for Neuroethology and Sensory Ecology, Endenicher Allee 11-13, 53115 Bonn, Germany. Electronic address:
It has been shown that zebrafish fear learning proceeds in the same way as reported for rodents. However, in zebrafish fear learning it is possible to substitute the use of electric shocks as unconditioned stimulus and utilize the inborn fear responses to the alarm substance Schreckstoff, instead. The skin extract Schreckstoff elicits typical fear reactions such as preferred bottom dwelling, swimming in a tighter shoal, erratic movements and freezing.
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