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Background: Callithrix jacchus, generally known as the common marmoset, has recently garnered interest as an experimental primate model for better understanding the basis of human social behavior, architecture and function. Modelling human neurological and psychological diseases in marmosets can enhance the knowledge obtained from rodent research for future pre-clinical studies. Hence, comprehensive and quantitative assessments of marmoset behaviors are crucial. However, systems for monitoring and analyzing marmoset behaviors have yet to be established.
New Method: In this paper, we present a novel multimodal system, MarmoDetector, for the automated 3D analysis of marmoset behavior under freely moving conditions. MarmoDetector allows the quantitative assessment of marmoset behaviors using computerised tracking analysis techniques that are based on a Kinect system equipped with video recordings, infrared images and depth analysis.
Results: Using MarmoDetector, we assessed behavioral circadian rhythms continuously over several days in home cages. In addition, MarmoDetector detected acute, transient complex behaviors of alcohol injected marmosets.
Comparison To Existing Method: Compared to 2D recording, MarmoDetector detects activities more precisely and is very sensitive as we could detect behavioral defects specifically induced by alcohol administration.
Conclusion: MarmoDetector facilitates the rapid and accurate analysis of marmoset behavior and will enhance research on the neural basis of brain disorders.
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http://dx.doi.org/10.1016/j.jneumeth.2019.03.016 | DOI Listing |
Am J Primatol
September 2025
Department of Genetics and Genome Biology, University of Leicester, Leicester, UK.
Goeldi's monkey (Callimico goeldii, the lone species in this genus) shows an array of characteristics that are typical for both New World primate families, the Cebidae and the Callitrichidae, and as such their taxonomic classification has remained in question. Based on DNA, the genus Callimico is regarded as a member of the monophyletic group of clawed New World monkeys (Callitrichidae). Callitrichids, as a rule, give birth to twins, which are blood chimeras due to placental blood vessel anastomoses.
View Article and Find Full Text PDFCell Rep
August 2025
Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. Electronic address:
Fragile X syndrome (FXS) is the foremost monogenic cause of autism spectrum disorder and intellectual disability, caused by FMR1 gene silencing. Here, we report that common marmosets carrying FMR1 mutation, a non-human primate model for FXS, share common features in behavioral and molecular phenotypes with patients with FXS. Founder mutants with markedly reduced fragile X messenger ribonucleoprotein expression display hyperactivity, spontaneous seizures, and transcriptome changes in synapse-related genes that overlap with those reported in patients with FXS.
View Article and Find Full Text PDFJ Neurosci
September 2025
Centre for Functional and Metabolic Mapping, Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.
Vocal communication is a complex social behavior that entails the integration of auditory perception and vocal production. Both anatomical and functional evidence have implicated the anterior cingulate cortex (ACC), including area 32, in these processes, but the dynamics of neural responses in area 32 during naturalistic vocal interactions remain poorly understood. Here, we addressed this by recording the activity of single area 32 neurons using chronically implanted ultra high density Neuropixels probes in freely moving male common marmosets () engaged in an antiphonal calling paradigm in which they exchanged long-distance "phee" calls with a virtual conspecific.
View Article and Find Full Text PDFbioRxiv
August 2025
Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21025, USA.
In auditory cortex, neural responses to stimuli inside receptive fields (RFs) can be further facilitated by behavioral demands, such as attending to a spatial location. It is less clear how off-RF stimuli modulate neural responses and contribute to behavioral tasks. Our recent study revealed a particular form of location-specific facilitation evoked by repeated stimulation from an off-RF location, suggesting behavioral modulation of spatial RFs.
View Article and Find Full Text PDFCurr Biol
August 2025
Department of Psychology, Yale University, New Haven, CT 06510, USA; Department of Neuroscience, Yale University School of Medicine, New Haven, CT 06510, USA; Wu Tsai Institute, Yale University, New Haven, CT 06510, USA; Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven
In humans, cooperation relies on advanced social cognition, but the extent to which these mechanisms support cooperation in nonhuman primates remains unclear. To investigate this, we examined freely moving marmoset dyads in a cooperative lever-pulling task. Marmosets successfully coordinated actions, relying on social vision rather than environmental cues.
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