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| http://dx.doi.org/10.1073/pnas.1111230108 | DOI Listing |
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Calretinin-expressing neurons in the basal forebrain specifically contact granule cells in the olfactory bulb and modulate odor learning.
J Neurosci
January 2025
Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada, K1N 6N5
GABAergic neurons in basal forebrain (BF) nuclei project densely to all layers of the mouse main olfactory bulb (OB), the first relay in odor information processing. However, BF projection neurons are diverse and the contribution of each subtype to odor information processing is not known. In the present study, we used retrograde and anterograde tracing methods together with whole-brain light-sheet analyses, patch-clamp recordings coupled with optogenetic and chemogenetic approaches during spontaneous odor discrimination, and go/no-go odor discrimination/learning tests to characterize the synaptic targets in the OB of BF calretinin-expressing (CR+) GABAergic cells and to reveal their functional implications.
View Article and Find Full Text PDFAssociative learning of non-nestmate cues improves enemy recognition in ants.
Curr Biol
January 2025
Department of Evolutionary Biology and Ecology, Institute of Biology I, University of Freiburg, Hauptstraße 1, 79104 Freiburg, Germany. Electronic address:
Recognition protects biological systems at all scales, from cells to societies. Social insects recognize their nestmates by colony-specific olfactory labels that individuals store as neural templates in their memory. Throughout an ant's life, learning continuously shapes the nestmate recognition template to keep up with the constant changes in colony labels.
View Article and Find Full Text PDFMeasuring habituation to stimuli: The Italian version of the Sensory Habituation Questionnaire.
PLoS One
December 2024
Department of Psychology, Educational Sciences and Human Movement, University of Palermo, Palermo, Italy.
Sensory habituation allows us to decrease responsiveness to repetitive or prolonged stimuli over time, making them easy to filter out and not interfere with ongoing activities. As such, habituation could be an important aspect to be evaluated within a sensory and cognitive assessment. The main aim of the present study was to validate an Italian version of the Sensory Habituation Questionnaire (S-Hab-Q), a self-report tool assessing how long an adult individual takes to adapt to daily sensory stimuli.
View Article and Find Full Text PDFRole of Odor Novelty on Olfactory Issues in Autism Spectrum Disorder.
Genes Brain Behav
December 2024
College of Osteopathic Medicine, New York Institute of Technology, Old Westbury, New York, USA.
Sensory processing abnormalities are a hallmark of autism spectrum disorder (ASD) and are included in its diagnostic criteria. Among these challenges, food neophobia has garnered attention due to its prevalence and potential impact on nutritional intake and health outcomes. This review describes the correlation between novel odor perception and feeding difficulties within the context of ASD.
View Article and Find Full Text PDFSex differences in olfactory behavior and neurophysiology in Long Evans rats.
J Neurophysiol
January 2025
Institute for Mind and Biology, The University of Chicago, Chicago, Illinois, United States.
In many species, olfactory abilities in females are more acute than those in males. Studies in humans show that women have lower olfactory thresholds and are better able to discriminate and identify odors than men. In mice, odorants elicit faster activation from a larger number of olfactory bulb glomeruli in females than in males.
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