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https://www.readbyqxmd.com/read/28315945/organization-of-the-reach-and-grasp-in-head-fixed-vs-freely-moving-mice-provides-support-for-multiple-motor-channel-theory-of-neocortical-organization
#1
Ian Q Whishaw, Jamshid Faraji, Jessica Kuntz, Behroo Mirza Agha, Mukt Patel, Gerlinde A S Metz, Majid H Mohajerani
Multiple motor channel (MMC) theory of neocortical organization proposes that complex movements, such as reaching for a food item to eat, are produced by the coordinated action of separate neural channels. For example, the human reach-to-grasp act is mediated by two visuo-parieto-motor cortex channels, one for the reach and one for the grasp. The present analysis asked whether there is a similar organization of reach-and-grasp movements in the mouse. The reach-to-eat movements of the same mice were examined from high-shutter speed, frame-by-frame video analysis in three tasks in which the mice obtained equivalent success scores: when freely-moving reaching for food pellets, when head-fixed reaching for food pellets, and when head-fixed reaching for pieces of pasta...
March 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28315640/effects-of-human-management-events-on-conspecific-aggression-in-captive-rhesus-macaques-macaca-mulatta
#2
Jacob H Theil, Brianne A Beisner, Ashley E Hill, Brenda McCowan
Conspecific aggression in outdoor-housed rhesus macaques (Macaca mulatta) at primate research facilities is a leading source of trauma and can potentially influence animal wellbeing and research quality. Although aggression between macaques is a normal part of daily social interactions, human presence might affect the frequency of various behaviors and instigate increases in conspecific aggression. We sought to determine how and which human management events affect conspecific aggression both immediately after an event and throughout the course of a day...
March 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28314817/fef-controlled-alpha-delay-activity-precedes-stimulus-induced-gamma-band-activity-in-visual-cortex
#3
Tzvetan Popov, Sabine Kastner, Ole Jensen
Recent findings in the visual system of non-human primates have demonstrated an important role of gamma band activity (40 - 100 Hz) in the feed-forward flow of sensory information, whereas feedback control appears to be dynamically established by oscillations in the alpha (8 - 13 Hz) and beta bands (13 - 18 Hz) (van Kerkoerle et al., 2014; Bastos et al., 2015). It is not clear, however, how alpha oscillations are controlled and how they interact with the flow of visual information mediated by gamma band activity...
March 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28298599/bushmeat-hunting-and-zoonotic-transmission-of-simian-t-lymphotropic-virus-1-in-tropical-west-and-central-africa
#4
Arsène Mossoun, Sébastien Calvignac-Spencer, Augustin E Anoh, Maude S Pauly, Daniel A Driscoll, Adam O Michel, Lavry Grah Nazaire, Stefan Pfister, Pascale Sabwe, Ulla Thiesen, Barbara R Vogler, Lidewij Wiersma, Jean-Jacques Muyembe-Tamfum, Stomy Karhemere, Chantal Akoua-Koffi, Emmanuel Couacy-Hymann, Barbara Fruth, Roman M Wittig, Fabian H Leendertz, Grit Schubert
Simian T-lymphotropic virus 1 (STLV-1) enters human populations through contact with non-human primate (NHP) bushmeat. We tested whether differences in the extent of contact to STLV-1 infected NHP bushmeat foster regional differences in prevalence of human HTLV-1. Using serological and PCR assays, we screened humans and NHP at two sub-Saharan African sites where subsistence hunting was expected to be less (Taï region, Côte d'Ivoire, CIV) or more developed (Bandundu region, Democratic Republic of the Congo, DRC)...
March 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28295315/a-comparative-analysis-of-the-physiological-properties-of-neurons-in-the-anterolateral-bed-nucleus-of-the-stria-terminalis-in-the-mus-musculus-rattus-norvegicus-and-macaca-mulatta
#5
Sarah E Daniel, Jidong Guo, Donald G Rainnie
The anterolateral group of the bed nucleus of the stria terminalis (BNSTALG ) is a critical modulator of a variety of rodent and primate behaviors spanning anxiety behavior and drug addiction. Three distinct neuronal cell types have been previously defined in the rat BNSTALG based on differences in the voltage-response to hyperpolarizing and depolarizing current injection. Differences in genetic expression profile between these three cell types suggest electrophysiological cell type may be an indicator for functional differences in the circuit of the rat BNSTALG ...
March 13, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28290511/action-observation-activates-neurons-of-the-monkey-ventrolateral-prefrontal-cortex
#6
Luciano Simone, Marco Bimbi, Francesca Rodà, Leonardo Fogassi, Stefano Rozzi
Prefrontal cortex is crucial for exploiting contextual information for the planning and guidance of behavioral responses. Among contextual cues, those provided by others' behavior are particularly important, in primates, for selecting appropriate reactions and suppressing the inappropriate ones. These latter functions deeply rely on the ability to understand others' actions. However, it is largely unknown whether prefrontal neurons are activated by action observation. To address this issue, we recorded the activity of ventrolateral prefrontal (VLPF) neurons of macaque monkeys during the observation of videos depicting biological movements performed by a monkey or a human agent, and object motion...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28287756/early-expression-of-manual-lateralization-in-bipedal-marsupials
#7
Andrey Giljov, Karina Karenina, Janeane Ingram, Yegor Malashichev
Robust lateralization in forelimb use has recently been found in bipedal, but not quadrupedal, marsupial mammals. The link between bipedality and handedness, occurring in both marsupials and primates, remains to be investigated. To shed light on the developmental origins of marsupial manual lateralization, infants of macropod marsupials were examined before and shortly after the acquisition of habitual bipedal posture and locomotion. Forelimb preferences were assessed in natural, not artificially evoked, behaviors of infant red-necked wallaby in the wild and infant eastern gray kangaroo in free-ranging captivity...
March 13, 2017: Journal of Comparative Psychology
https://www.readbyqxmd.com/read/28284709/the-next-step-for-stress-research-in-primates-to-identify-relationships-between-glucocorticoid-secretion-and-fitness
#8
REVIEW
Jacinta C Beehner, Thore J Bergman
Glucocorticoids are hormones that mediate the energetic demands that accompany environmental challenges. It is therefore not surprising that these metabolic hormones have come to dominate endocrine research on the health and fitness of wild populations. Yet, several problems have been identified in the vertebrate research that also apply to the non-human primate research. First, glucocorticoids should not be used as a proxy for fitness (unless a link has previously been established between glucocorticoids and fitness for a particular population)...
March 15, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28279668/exogenous-attention-to-fear-differential-behavioral-and-neural-responses-to-snakes-and-spiders
#9
Sandra C Soares, Dominique Kessel, María Hernández-Lorca, María J García-Rubio, Paulo Rodrigues, Nuno Gomes, Luis Carretié
Research has consistently shown that threat stimuli automatically attract attention in order to activate the defensive response systems. Recent findings have provided evidence that snakes tuned the visual system of evolving primates for their astute detection, particularly under challenging perceptual conditions. The goal of the present study was to measure behavioral and electrophysiological indices of exogenous attention to snakes, compared with spiders - matched for rated fear levels but for which sources of natural selection are less well grounded, and to innocuous animals (birds), which were presented as distracters, while participants were engaged in a letter discrimination task...
March 6, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28279627/making-new-connections-insights-from-primate-parasite-networks
#10
REVIEW
Julie Rushmore, Donal Bisanzio, Thomas R Gillespie
Social interactions are important in everyday life for primates and many other group-living animals; however, these essential exchanges also provide opportunities for parasites to spread through social groups. Network analysis is a unique toolkit for studying pathogen transmission in a social context, and recent primate-parasite network studies shed light on linkages between behavior and infectious disease dynamics, providing insights for conservation and public health. We review existing literature on primate-parasite networks, examining determinants of infection risk, issues of network scale and temporal dynamics, and applications for disease control...
March 6, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/28279081/persistent-expression-of-dopamine-synthesizing-enzymes-15-years-after-gene-transfer-in-a-primate-model-of-parkinson-s-disease
#11
Yoshihide Sehara, Ken-Ichi Fujimoto, Kunihiko Ikeguchi, Yuko Katakai, Fumiko Ono, Naomi Takino, Mika Ito, Keiya Ozawa, Shin-Ichi Muramatsu
Restoring dopamine production in the putamen through gene therapy is a straightforward strategy for ameliorating motor symptoms for Parkinson's disease (PD). In a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) toxicity-based primate model of PD, we previously showed the safety and efficacy of adeno-associated virus (AAV) vector-mediated gene delivery to the putamen of three dopamine-synthesizing enzymes (tyrosine hydroxylase [TH], aromatic l-amino acid decarboxylase [AADC], and guanosine triphosphate cyclohydrolase I [GCH]) up to 10 months post-procedure...
March 9, 2017: Human Gene Therapy. Clinical Development
https://www.readbyqxmd.com/read/28278215/dietary-diversity-feeding-selectivity-and-responses-to-fruit-scarcity-of-two-sympatric-bornean-primates-hylobates-albibarbis-and-presbytis-rubicunda-rubida
#12
Dena J Clink, Christopher Dillis, Katie L Feilen, Lydia Beaudrot, Andrew J Marshall
Effectively characterizing primate diets is fundamental to understanding primate behavior, ecology and morphology. Examining temporal variation in a species' diet, as well as comparing the responses of different species to variation in resource availability, can enhance understanding of the evolution of morphology and socioecology. In this study, we use feeding data collected over five years to describe the diets of two sympatric Southeast Asian primate species of similar body size: white-bearded gibbons (Hylobates albibarbis) and red leaf monkeys (Presbytis rubicunda rubida), in Gunung Palung National Park, West Kalimantan, Indonesia...
2017: PloS One
https://www.readbyqxmd.com/read/28277719/stick-weaving-innovative-behavior-in-tamarins-saguinus-oedipus
#13
Charles T Snowdon, Thomas R Roskos
Some captive cotton-top tamarins spontaneously weave sticks in the mesh of their enclosures so that the stick is lodged between two mesh openings. Sticks are broken from natural branches placed in the enclosures and often modified by biting them in the center before weaving through the mesh. To investigate this further, we systematically surveyed all animals in our colony and found that all successful stick-weaving tamarins were descendants from only 2 of the 16 breeding groups contributing to the colony membership at the time of surveying or were the mates of these descendants, suggesting stick-weaving is a socially learned behavior...
March 9, 2017: Journal of Comparative Psychology
https://www.readbyqxmd.com/read/28277380/update-on-developmental-anesthesia-neurotoxicity
#14
Laszlo Vutskits, Andrew Davidson
PURPOSE OF REVIEW: Adverse long-term impact of general anesthesia on the developing brain is a widely discussed and controversial issue with potential public health relevance. The goal of this article is to give insights into the most recent experimental and clinical observations aimed to advance our understanding in this field. RECENT FINDINGS: Recent investigations demonstrate long-term behavioral consequences of early-life anesthesia exposure in nonhuman primates under experimental conditions that are translationally relevant to human clinical practice...
March 8, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28271667/consequences-of-early-adverse-rearing-experience-eare-on-development-insights-from-non-human-primate-studies
#15
REVIEW
Bo Zhang
Early rearing experiences are important in one's whole life, whereas early adverse rearing experience(EARE) is usually related to various physical and mental disorders in later life. Although there were many studies on human and animals, regarding the effect of EARE on brain development, neuroendocrine systems, as well as the consequential mental disorders and behavioral abnormalities, the underlying mechanisms remain unclear. Due to the close genetic relationship and similarity in social organizations with humans, non-human primate(NHP) studies were performed for over 60 years...
January 18, 2017: Zool Res
https://www.readbyqxmd.com/read/28270589/coding-of-spatial-attention-priorities-and-object-features-in-the-macaque-lateral-intraparietal-cortex
#16
Ekaterina Levichkina, Yuri B Saalmann, Trichur R Vidyasagar
Primate posterior parietal cortex (PPC) is known to be involved in controlling spatial attention. Neurons in one part of the PPC, the lateral intraparietal area (LIP), show enhanced responses to objects at attended locations. Although many are selective for object features, such as the orientation of a visual stimulus, it is not clear how LIP circuits integrate feature-selective information when providing attentional feedback about behaviorally relevant locations to the visual cortex. We studied the relationship between object feature and spatial attention properties of LIP cells in two macaques by measuring the cells' orientation selectivity and the degree of attentional enhancement while performing a delayed match-to-sample task...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28269378/non-contact-automatic-respiration-monitoring-in-restrained-rodents
#17
Behnaz Rezaei, Jared Lowe, Jason R Yee, Stephen Porges, Sarah Ostadabbas
Prairie voles are socially monogamous rodents that form social bonds similar to those seen in primates. Social behavior investigation in these species, that include studying their breathing regulation, can provide us with an invaluable psychological model to understand social and emotional functions in both animals and humans. There have been several studies associated with the respiratory pattern of these species in the state of fear-induced defense. However, non-invasive measurement methods employed so far suffer from the lack of a natural experiment environment for the rodents...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268643/properties-of-primary-motor-cortical-local-field-potentials-in-the-leg-and-trunk-representations-during-arm-movements
#18
Adil A Tobaa, Matthew D Best, Karthikeyan Balasubramanian, Kazutaka Takahashi, Nicholas G Hatsopoulos
Large, spatially-distributed populations of motor cortical neurons are recruited during upper limb movements. Here, we examined how beta attenuation, a mesoscopic reflection of unit engagement, varies across a spatially expansive sampling of primary motor cortex in a non-human primate (macaca mulatta). We found that electrodes in both the trunk and leg representation of motor cortex exhibit qualitatively similar behavior to electrodes in the arm representation during a planar reaching task, despite the fact that there were no overt movements of the trunk or leg...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268105/prolonged-striatal-disinhibition-as-a-chronic-animal-model-of-tic-disorders
#19
Esther Vinner, Michal Israelashvili, Izhar Bar-Gad
BACKGROUND: Experimental findings and theoretical models have associated Tourette syndrome with abnormal striatal inhibition. The expression of tics, the hallmark symptom of this disorder, has been transiently induced in non-human primates and rodents by the injection of GABAA antagonists into the striatum, leading to temporary disinhibition. NEW METHOD: The novel chronic model of tic expression utilizes mini-osmotic pumps implanted subcutaneously in the rat back for prolonged infusion of bicuculline into the dorsolateral striatum...
March 4, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28266751/low-dimensional-representation-of-face-space-by-face-selective-inferior-temporal-neurons
#20
Sina Salehi, Mohammad-Reza A Dehaqani, Hossein Esteky
Representation of visual objects in primate brain is distributed and multiple neurons are involved in encoding each object. One way to understand the neural basis of object representation is to estimate the number of neural dimensions that are needed for veridical representation of object categories. In this study, the characteristics of the match between physical-shape and neural representational spaces in monkey inferior temporal (IT) cortex have been evaluated. Specifically, we examined how the number of neural dimensions, stimulus behavioral saliency and stimulus category selectivity of neurons affect the correlation between shape and neural representational spaces in IT cortex...
March 7, 2017: European Journal of Neuroscience
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