A5079303585- Neural dynamics and brain function
- Visual perception and processing mechanisms
- Neural and Behavioral Psychology Studies
- EEG and Brain-Computer Interfaces
- Multisensory perception and integration
- Functional Brain Connectivity Studies
- Olfactory and Sensory Function Studies
- Advanced Neuroimaging Techniques and Applications
- Memory and Neural Mechanisms
- Face Recognition and Perception
- Action Observation and Synchronization
- Neuroscience and Neural Engineering
- Neurobiology and Insect Physiology Research
- Vestibular and auditory disorders
- Gaze Tracking and Assistive Technology
- Motor Control and Adaptation
- Advanced MRI Techniques and Applications
- Visual Attention and Saliency Detection
- Health, Environment, Cognitive Aging
- Neuroscience and Music Perception
- Hemispheric Asymmetry in Neuroscience
- Mind wandering and attention
- Diet and metabolism studies
- Primate Behavior and Ecology
- Medical Imaging Techniques and Applications
Université Claude Bernard Lyon 1
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Institut des Sciences Cognitives
2016-2025
Universiti Putra Malaysia
2020
Institut des Sciences Cognitives Marc Jeannerod
2009-2018
University of British Columbia
2017
Laboratoire Interuniversitaire de Biologie de la Motricité
2017
Centre National pour la Recherche Scientifique et Technique (CNRST)
2011
Sadra Institute Of Higher Education
2011
University of Rochester
2003-2007
Non-human primate neuroimaging is a rapidly growing area of research that promises to transform and scale translational cross-species comparative neuroscience. Unfortunately, the technological methodological advances past two decades have outpaced accrual data, which particularly challenging given relatively few centers necessary facilities capabilities. The PRIMatE Data Exchange (PRIME-DE) addresses this challenge by aggregating independently acquired non-human magnetic resonance imaging...
Abstract Self‐motion detection requires the interaction of a number sensory systems for correct perceptual interpretation given movement and an eventual motor response. Parietal cortical areas are thought to play important role in this function, we have thus studied encoding multimodal signals their spatiotemporal interactions ventral intraparietal area macaque monkeys. Thereby, identified first time presence vestibular input described its with somatosensory visual signals, via extracellular...
The goal of this study was to characterize multisensory interaction patterns in cortical ventral intraparietal area (VIP). We recorded single-unit activity two alert monkeys during the presentation visual (drifting gratings) and tactile (low-pressure air puffs) stimuli. One stimulus always positioned inside receptive field neuron. other defined so as manipulate spatial temporal disparity between More than 70% VIP cells showed a significant modulation their response by bimodal stimulations....
Abstract We recorded neuronal responses to optic flow stimuli in the ventral intraparietal area (VIP) of two awake macaque monkeys. According previous studies on monkey extrastriate cortex we used different stimulus classes: frontoparallel motion, radial (expansion and contraction) rotational (clockwise counter‐clockwise). Seventy‐five percent cells showed statistically significant one or more these stimuli. Shifting location singularity within visual field led a response modulation almost...
The posterior parietal cortex participates to numerous cognitive functions, from perceptual attentional and decisional processes. However, the same functions have also been attributed frontal cortex. We previously conducted a series of reversible inactivations lateral intraparietal area (LIP) eye field (FEF) in monkey which showed impairments covert visual search performance, characterized mainly by an increase mean reaction time (RT) necessary detect contralesional target. Only subtle...
Abstract Although the relative expansion of frontal cortex in primate evolution is generally accepted, nature human uniqueness, if any, and between-species anatomo-functional comparisons areas remain controversial. To provide a novel interpretation brains, sulcal morphological variability medial was assessed Old World monkeys (macaque/baboon) Hominoidea (chimpanzee/human). We show that both possess paracingulate sulcus, which previously thought to be unique brain linked higher cognitive...
In the jungle, survival is highly correlated with ability to detect and distinguish between an approaching predator a putative prey. From ecological perspective, rapidly its prey stronger cue for flight than slowly moving predator. present study, we use functional magnetic resonance imaging in nonhuman primate, investigate neural bases of prediction impact body by looming stimulus, i.e., interaction dynamic visual stimulus expected consequences onto independent sensory modality, namely,...
The human default mode network (DMN) is engaged at rest and in cognitive states such as self-directed thoughts. Interconnected homologous cortical areas primates constitute a considered the equivalent. Here, based on cross-species comparison of DMN between humans non-hominoid (macaques, marmosets, mouse lemurs), we report major dissimilarities connectivity profiles. Most importantly, medial prefrontal cortex (mPFC) poorly with posterior cingulate (PCC), though strong correlated activity PCC...
Detailed neuroscientific data from macaque monkeys have been essential in advancing understanding of human frontal cortex function, particularly for regions without homologs other model species. However, precise transfer this knowledge direct use applications requires an monkey to hominid homologies, whether and how sulci cytoarchitectonic the macaques relate those hominids. We combine sulcal pattern analysis with resting-state functional magnetic resonance imaging show that old-world brains...
Abstract The anterior wall of the parieto‐occipital sulcus (POs) macaque monkey, classically considered as part Brodmann's area 19, contains two functionally distinct areas: a ventral, purely visual area, V6, and dorsal V6A, containing neurons related to control arm movements. aim this study was establish whether areas V6 so far identified only on functional basis, have cytoarchitectonic counterpart. analysis 13 hemispheres from ten brains, cut along different planes section, showed that POs...
Although we are confronted with an ever-changing environment, do not have the capacity to analyze all incoming sensory information. Perception is selective and guided both by salient events occurring in our visual field cognitive premises about what needs attention. lateral intraparietal area (LIP) frontal eye (FEF) known represent position of attention, their respective contributions its control still unclear. Here, report LIP FEF neuronal activities recorded while monkeys performed a...
From an ecological point of view, approaching objects are potentially more harmful than receding objects. A predator, a dominant conspecific, or mere branch coming up at high speed can all be dangerous if one does not detect them and produce the appropriate escape behavior fast enough. And indeed, looming stimuli trigger stereotyped defensive responses in both monkeys human infants. However, while heteromodal somatosensory consequences visual fully predicted by their spatiotemporal dynamics,...
Decoding neuronal information is important in neuroscience, both as a basic means to understand how activity related cerebral function and processing stage driving neuroprosthetic effectors. Here, we compare the readout performance of six commonly used classifiers at decoding two different variables encoded by spiking non-human primate frontal eye fields (FEF): spatial position visual cue, instructed orientation animal's attention. While first variable exogenously driven environment, second...
Abstract Recent studies suggest that attention samples space rhythmically through oscillatory interactions in the frontoparietal network. How these attentional fluctuations coincide with spatial exploration/displacement and exploitation/selection by a dynamic spotlight under top-down control is unclear. Here, we show direct contribution of prefrontal selection mechanisms to continuous exploration. Specifically, provide high spatio-temporal resolution population decoding covert spotlight. We...
The receptive field (RF) of neurons recorded from the lateral intraparietal area (LIP) was quantified using a rapid, computer-driven mapping procedure. For each neuron, RF mapped: (1) during attentive fixation and (2) free visual exploration. location, size internal structure were modulated by context in over two-thirds neurons. major trend proportionally larger amount neuronal resources allocated to central space fixation, an attenuated center-to-periphery gradient representation gaze. A...
Refraining from reacting does not only involve reactive inhibitory mechanisms. It was recently found that control also relies strongly on proactive However, since most available studies have focused stopping, little is known about how inhibition of response implemented. Two behavioral experiments were conducted to identify the temporal dynamics this executive function. They manipulated respectively time during which must be sustained until a stimulus occurs, and limit allowed set up before...
The parietal cortex is highly multimodal and plays a key role in the processing of objects actions space, both human nonhuman primates. Despite accumulated knowledge species, we lack following: (1) general description multisensory convergence this cortical region to situate sparser lesion electrophysiological recording studies; (2) way compare extrapolate monkey data results. Here, use functional magnetic resonance imaging (fMRI) provide bridge between studies. We focus on intraparietal...