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Cattaneo Zaira Z Department of Psychology, University of Milano-Bicocca, Milano, Italy; Brain Connectivity Center, National Neurological Institute C. Mondino, Pavia, Italy. Electronic address: - - 2014
Cerebellar patients have been found to show deficits in visual motion discrimination, suggesting that the cerebellum may play a role in visual sensory processing beyond mediating motor control. Here we show that triple-pulse online transcranial magnetic stimulation (TMS) over cerebellar vermis but not over the cerebellar hemispheres significantly impaired motion ...
Gremmler Svenja S University of - - 2014
Saccadic eye movements are an integral part of many visually guided behaviors. Recent research in humans has shown that processes which control saccades are also involved in establishing perceptual space: A shift in object localization during fixation occurred after saccade amplitudes had been shortened or lengthened by saccadic adaptation. We ...
So Kelvin K Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, - - 2014
Objective. Intracortical brain-machine interfaces (BMIs) have predominantly utilized spike activity as the control signal. However, an increasing number of studies have shown the utility of local field potentials (LFPs) for decoding motor related signals. Currently, it is unclear how well different LFP frequencies can serve as features for continuous, closed-loop ...
Tanabe Seiji S Albert Einstein College of - - 2014
The stereo correspondence problem poses a challenge to visual neurons because localized receptive fields potentially cause false responses. Neurons in the primary visual cortex (V1) partially resolve this problem by combining excitatory and suppressive responses to encode binocular disparity. We explored the time-course of this combination in awake, monkey V1 ...
Pinotsis D A DA The Wellcome Trust Centre for Neuroimaging, University College London, Queen Square, London WC1N 3BG, UK. Electronic address: - - 2014
Using high-density electrocorticographic recordings - from awake-behaving monkeys - and dynamic causal modelling, we characterised contrast dependent gain control in visual cortex, in terms of synaptic rate constants and intrinsic connectivity. Specifically, we used neural field models to quantify the balance of excitatory and inhibitory influences; both in terms of ...
Mostafa Ahmed A AA Centre for Vision Research, York University, Toronto, ON, - - 2014
Reaching with visual feedback that is misaligned with respect to the actual hand's location leads to changes in reach trajectories (i.e., visuomotor adaptation). Previous studies have also demonstrated that when training to reach with misaligned visual feedback of the hand, the opposite hand also partially adapts, providing evidence of intermanual ...
Ghazanfar Asif A AA Princeton University, - - 2014
In primates, different vocalizations are produced, at least in part, by making different facial expressions. Not surprisingly, humans, apes, and monkeys all recognize the correspondence between vocalizations and the facial postures associated with them. However, two dissimilarities between monkey vocalizations and human speech are that, in the latter, the acoustic ...
Wutz Andreas A Center for Mind and Brain Sciences (CIMeC), University of Trento, Rovereto I-38068, Italy and MEG Center, University of Tübingen, Tübingen D-72076, - - 2014
Dynamic vision requires both stability of the current perceptual representation and sensitivity to the accumulation of sensory evidence over time. Here we study the electrophysiological signatures of this intricate balance between temporal segregation and integration in vision. Within a forward masking paradigm with short and long stimulus onset asynchronies (SOA), ...
Rawashdeh Oliver O Department of Molecular Pharmacology and Biological - - 2014
Depression is often linked to early-life adversity and circadian disturbances. Here we assessed the long-term impact of early-life adversity, particularly pre-weaning mother-infant separation, on the circadian system's responsiveness to a time giver or synchronizer (Zeitgeber). Mother-reared (MR) and peer-reared (PR) rhesus monkeys were subjected to chronic jet-lag, a forced desynchrony ...
Kinoshita Junzo J Medicinal Safety Research Laboratories, Daiichi Sankyo Co., Ltd., 1-16-13, Kita-Kasai, Edogawa-ku, Tokyo, 134-8630, - - 2014
Purpose: To investigate functional alteration of the retina induced by digoxin in monkeys. Methods: Digoxin was intravenously administered to cynomolgus monkeys and standard full-field electroretinograms (ERGs) were serially recorded. In other digoxin-treated monkeys, the rod and cone a-waves to high-intensity flashes were obtained and analyzed by the a-wave fitting model ...
Cullen Kathleen E KE Aerospace Medical Research Unit, Department of Physiology, McGill University Montreal, QC, - - 2014
The vestibular system is vital for maintaining an accurate representation of self-motion. As one moves (or is moved) toward a new place in the environment, signals from the vestibular sensors are relayed to higher-order centers. It is generally assumed the vestibular system provides a veridical representation of head motion to ...
Brevers Damien D Psychological Medicine Laboratory, Faculty of Medicine, Brugmann-campus, Université Libre de Bruxelles (ULB), 4 Place Van Gehuchten, 1020, Brussels, Belgium, - - 2014
Casino venues are often characterized by "warm" colors, reward-related sounds, and the presence of others. These factors have always been identified as a key factor in energizing gambling. However, few empirical studies have examined their impact on gambling behaviors. Here, we aimed to explore the impact of combined red light ...
Agrillo Christian C Department of General Psychology, University of Padova, Via Venezia 8, 35131, Padova, Italy, - - 2014
A long-standing debate surrounds the issue of whether human and nonhuman animals share the same perceptual mechanisms. In humans, the Zöllner illusion occurs when two parallel lines appear to be convergent when oblique crosshatching lines are superimposed. Although one baboon study suggests that they too might perceive this illusion, the ...
Böckler Anne A 1Donders Institute for Brain, Cognition and Behaviour, Radboud University - - 2014
Direct eye contact and motion onset are two powerful cues that capture attention. In the present study, we combined direct gaze with the sudden onset of motion to determine whether these cues have independent or shared influences. Participants identified targets presented randomly on one of four faces. Initially, two faces ...
Mangalam Madhur M Biopsychology Laboratory, University of Mysore, Mysore, - - 2014
There can be several factors that are likely to have played a role in the evolution of hand preference in humans and non-human primates, which the existing theories do not consider. There exists a possibility that hand preference in non-human primates evolved from the pre-existing lateralities in more elementary brain ...
Chaudhari Uddhav K UK Department of Primate Biology, National Institute for Research in Reproductive Health (NIRRH), Indian Council of Medical Research (ICMR), Parel, Mumbai, India. - - 2014
We undertook the present study to investigate the echographic characteristics of the uterus and cervix of female bonnet monkeys ( Macaca radiata ) during the proliferative and secretory phases of the menstrual cycle. The cervix was tortuous in shape and measured 2.74 ± 0.30 cm (mean ± SD) in width ...
Vindas Marco A MA Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, , PO Box 5003, Ås 1432, Norway, Department of Biosciences, University of Oslo, , PO Box 1041, Blindern, Oslo 0316, Norway, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, , Palackého tř. 1/3, Brno 61242 , Czech Republic, Department of Marine Ecology and Aquaculture, Danish Institute for Fisheries Research, North Sea Centre, , PO Box 101, Hirtshals 9850, - - 2014
Animals use aggressive behaviour to gain access to resources, and individuals adjust their behaviour relative to resource value and own resource holding potential (RHP). Normally, smaller individuals have inferior fighting abilities compared with larger conspecifics. Affective and cognitive processes can alter contest dynamics, but the interaction between such effects and ...
Mendonça Catarina C Department of Signal Processing and Acoustics, School of Electrical Engineering, Aalto University Espoo, - - 2014
In this article we present a review of current literature on adaptations to altered head-related auditory localization cues. Localization cues can be altered through ear blocks, ear molds, electronic hearing devices, and altered head-related transfer functions (HRTFs). Three main methods have been used to induce auditory space adaptation: sound exposure, ...
Kondo Hirohito M HM NTT Communication Science Laboratories, NTT Corporation Atsugi, Japan ; Department of Child Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and University of Fukui Suita, - - 2014
The perceptual organization of auditory scenes is a hard but important problem to solve for human listeners. It is thus likely that cues from several modalities are pooled for auditory scene analysis, including sensory-motor cues related to the active exploration of the scene. We previously reported a strong effect of ...
Wang Ying Y State Key Laboratory of Brain and Cognitive Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, - - 2014
Images projected onto the retinas of our two eyes come from slightly different directions in the real world, constituting binocular disparity that serves as an important source for depth perception - the ability to see the world in three dimensions. It remains unclear whether the integration of disparity cues into ...
Otsuna Hideo H Institute of Molecular and Cellular Biosciences (IMCB), University of Tokyo Tokyo, Japan ; Department of Neurobiology and Anatomy, University of Utah Salt Lake City, UT, - - 2014
Compared with connections between the retinae and primary visual centers, relatively less is known in both mammals and insects about the functional segregation of neural pathways connecting primary and higher centers of the visual processing cascade. Here, using the Drosophila visual system as a model, we demonstrate two levels of ...
Dai Mingjia M Department of Neurology, Icahn School of Medicine at Mount Sinai , New York, NY , - - 2014
The mal de debarquement syndrome (MdDS), a continuous feeling of swaying, rocking, and/or bobbing, generally follows travel on the sea. The associated symptoms cause considerable distress. The underlying neural mechanisms are unknown, and to date there have been no effective treatments for this condition. Results in monkeys and humans suggested ...
Léveillé Jasmin J Center for Computational Neuroscience and Neural Technology, Boston University, Boston, MA, - - 2014
An object-centric reference frame is a spatial representation in which objects or their parts are coded relative to others. The existence of object-centric representations is supported by the phenomenon of induced motion, in which the motion of an inducer frame in a particular direction induces motion in the opposite direction ...
Faivre Nathan N Computation and Neural Systems, California Institute of Technology, Pasadena, CA, - - 2014
Visual awareness of an event, object, or scene is, by essence, an integrated experience, whereby different visual features composing an object (e.g., orientation, color, shape) appear as an unified percept and are processed as a whole. Here, we tested in human observers whether perceptual integration of static motion cues depends ...
Liu Pengyu P School of Electronic Information & Control Engineering, Beijing University of Technology, Beijing 100124, - - 2014
Different visual perception characteristic saliencies are the key to constitute the low-complexity video coding framework. A hierarchical video coding scheme based on human visual systems (HVS) is proposed in this paper. The proposed scheme uses a joint video coding framework consisting of visual perception analysis layer (VPAL) and video coding ...
Wright Michael J MJ Centre for Cognition and Neuroimaging, Department of Psychology, Brunel University London, Uxbridge, United - - 2014
The purpose of the experiments was to analyse the spatial cueing effects of the movements of soccer players executing normal and deceptive (step-over) turns with the ball. Stimuli comprised normal resolution or point-light video clips of soccer players dribbling a football towards the observer then turning right or left with ...
Law Nok-Yeung NY a Schools of Human Kinetics , University of Ottawa , - - 2014
Tai Chi movements share many similar biomechanical features with normal walking. The purpose of the study was to examine and to compare the temporospatial and kinematic features of two typical Tai Chi movements with forward walking. Experienced male Tai Chi practitioners (n = 15) between the ages of 65 to ...
Gagin Galina G Neuroscience Program, Wellesley College, Wellesley, MA, - - 2014
MACAQUE MONKEYS ARE A MODEL OF HUMAN COLOR VISION TO FACILITATE LINKING PHYSIOLOGY IN MONKEYS WITH PSYCHOPHYSICS IN HUMANS, WE DIRECTLY COMPARED COLOR-DETECTION THRESHOLDS IN HUMANS AND RHESUS MONKEYS: COLORS WERE DEFINED BY AN EQUILUMINANT PLANE OF CONE-OPPONENT COLOR SPACE ALL SUBJECTS WERE TESTED ON AN IDENTICAL APPARATUS WITH A ...
Craft Cheryl M CM Mary D. Allen Laboratory for Vision Research, Doheny Eye Institute, Departments of Ophthalmology and Cell & Neurobiology, Keck School of Medicine of the University of Southern California, 1355 San Pablo St., DVRC 405, 90033, Los Angeles, CA, USA, - - 2014
Macaca, Callithrix jacchus marmoset monkey, Pan troglodytes chimpanzee and human retinas were examined to define if short wavelength (S) cones share molecular markers with L&M cone or rod photoreceptors. S cones showed consistent differences in their immunohistochemical staining and expression levels compared to L&M cones for "rod" Arrestin1 (S-Antigen), "cone" ...
Keshavarz Behrang B Technology Team/iDAPT, Research Department, Toronto Rehabilitation Institute, Toronto, Ontario, - - 2014
Auditory cues can create the illusion of self-motion (vection) in the absence of visual or physical stimulation. The present study aimed to determine whether auditory cues alone can also elicit motion sickness and how auditory cues contribute to motion sickness when added to visual motion stimuli. Twenty participants were seated ...
Karmali Faisal F Massachusetts Eye & Ear - - 2013
Prior studies show that visual motion perception is more precise than vestibular motion perception, but it is unclear whether this is universal or the result of specific experimental conditions. We compared visual and vestibular motion precision over a broad range of temporal frequencies by measuring thresholds for vestibular (subject motion ...
Badde Stephanie - - 2013
Touch location can be specified in different anatomical and external reference frames. Temporal order judgments (TOJs) in touch are known to be sensitive to conflict between reference frames. To establish which coordinates are involved in localizing touch to a finger, participants performed TOJ on tactile stimuli to 2 out of ...
Sartori Luisa L Department of General Psychology, University of Padua, Via Venezia 8, 35131, Padua, - - 2013
Although there is a wealth of behavioral data regarding grasping movements in non-human primates, how posture influences the kinematics of prehensile behavior is not yet clearly understood. The purpose of this study was to examine and compare kinematic descriptions of grip behaviors while primates (macaque monkeys) were in a sitting ...
Keshavarz Behrang B Department of Research, Toronto Rehabilitation Institute, Technology Team/iDAPT, 550 University Avenue, Toronto, ON, M5G 2A2, Canada, - - 2013
Vection is the illusion of self-motion in the absence of real physical movement. The aim of the present study was to analyze how multisensory inputs (visual and auditory) contribute to the perception of vection. Participants were seated in a stationary position in front of a large, curved projection display and ...
Pontzer Herman - - 2013
Chimpanzees (Pan troglodytes) habitually walk both bipedally and quadrupedally, and have been a common point of reference for understanding the evolution of bipedal locomotion in early ape-like hominins. Here we compare the kinematics, kinetics, and energetics of bipedal and quadrupedal walking and running in a sample of five captive chimpanzees. ...
Correia Grácio B J - - 2013
In the field of motion-based simulation, it was found that a visual amplitude equal to the inertial amplitude does not always provide the best perceived match between visual and inertial motion. This result is thought to be caused by the "quality" of the motion cues delivered by the simulator motion ...
Gleiss Stephanie - - 2013
Perception is a multisensory process, and previous work has shown that multisensory interactions occur not only for object-related stimuli but also for simplistic and apparently unrelated inputs to the different senses. We here compare the facilitation of visual perception induced by transient (target-synchronized) sounds to the facilitation provided by continuous ...
Gleiss Stephanie - - 2013
Multisensory interactions shape every day perception and stimuli in one modality can enhance perception in another even when not being directly task relevant. While the underlying neural principles are slowly becoming evident, most work has focused on transient stimuli and little is known about those mechanisms underlying audio-visual motion processing. ...
Baltazar Ricardo M - - 2013
Psychostimulant reward, as assessed via the conditioned place paradigm (CPP), exhibits a daily rhythm with peaks in the late dark and early light periods, and a nadir near the light-to-dark transition. While this diurnal rhythm is correlated with neural activity in several corticolimbic structures, the brain regions mediating this behavioral ...
Tychsen Lawrence - - 2013
Purpose: Optokinetic eye movements stabilize gaze by tracking motion of the visual scene when we move our head. The purpose of this study was to describe vertical and horizontal optokinetic nystagmus (OKN) in non-human primates (NHPs) with normal binocular vision, and to compare their responses to NHPs with binocular maldevelopment ...
Furuyama Takafumi - - 2013
Japanese macaques, Macaca fuscata, utter the Smooth Early High (SEH), one of harmonically structured coo-calls, for greeting and locating other individuals. The purpose of this study was to examine acoustical features of SEH for them to identify the caller. Two male Japanese macaques were trained to discriminate SEHs of Macaque ...
Farley Norman J - - 2013
Two experiments evaluated the ability of 50 older, middle-aged, and younger adults to discriminate the 3-dimensional (3-D) shape of curved surfaces defined by optical motion. In Experiment 1, temporal correspondence was disrupted by limiting the lifetimes of the moving surface points. In order to discriminate 3-D surface shape reliably, the ...
Sahraie Arash A Vision and Attention Laboratories, School of Psychology, College of Life Sciences and Medicine, University of Aberdeen, Aberdeen AB24 3FX, United - - 2013
Significantly above-chance detection of stimuli presented within the field defect of patients with postgeniculate lesions is termed "blindsight." It has been proposed that those with blindsight are more likely to benefit from visual rehabilitation by repeated stimulation, leading to increased visual sensitivity within their field defect. Establishing the incidence of ...
Gomi Hiroaki - - 2013
Information pertaining to visual motion is used in the brain not only for conscious perception but also for various kinds of motor controls. In contrast to the increasing amount of evidence supporting the dissociation of visual processing for action versus perception, it is less clear whether the analysis of visual ...
Angueyra Juan M JM Department of Physiology and Biophysics, Howard Hughes Medical Institute, University of Washington, Seattle, Washington, - - 2013
Noise in the responses of cone photoreceptors sets a fundamental limit on visual sensitivity, yet the origin of noise in mammalian cones and its relation to behavioral sensitivity are poorly understood. Our work here on primate cones improves understanding of these issues in three ways. First, we found that cone ...
Pinto Maria - - 2013
A recent study (Cavallo and Pinto, 2012) showed that daytime running lights (DRLs) on cars create "visual noise" that interferes with the lighting of motorcycles and affects their visual conspicuity. In the present experiment, we tested three conspicuity enhancements designed to improve motorcycle detectability in a car-DRL environment: a triangle ...
Röper K M - - 2013
The endangered proboscis monkey (Nasalis larvatus) is a sexually highly dimorphic Old World primate endemic to the island of Borneo. Previous studies focused mainly on its ecology and behavior, but knowledge of its vocalizations is limited. The present study provides quantified information on vocal rate and on the vocal acoustics ...
Fidalgo Camino - - 2013
Several studies have reported the brain regions involved in response learning. However, there is discrepancy regarding the lighting conditions in the experimental setting (i.e. under dark or light conditions). In this regard, it would be relevant to know if the presence/absence of visual cues in the environment has any effect ...
Dokka Kalpana - - 2013
Judging object trajectory during self-motion is a fundamental ability for mobile organisms interacting with their environment. This fundamental ability requires the nervous system to compensate for the visual consequences of self-motion in order to make accurate judgments, but the mechanisms of this compensation are poorly understood. We comprehensively examined both ...
van Kemenade Bianca M - - 2013
The human motion complex hMT+/V5 is activated not only by visual motion, but also by tactile and auditory motion. Whilst direction-selectivity has been found within this complex for visual and auditory stimuli, it is unknown whether hMT+/V5 also contains direction-specific information from the tactile modality. In the current study, we ...
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