A5029520140- Multisensory perception and integration
- Neural dynamics and brain function
- Visual perception and processing mechanisms
- Olfactory and Sensory Function Studies
- EEG and Brain-Computer Interfaces
- Tactile and Sensory Interactions
- Neuroscience and Music Perception
- Neural and Behavioral Psychology Studies
- Functional Brain Connectivity Studies
- Hearing Loss and Rehabilitation
- Face Recognition and Perception
- Biochemical Analysis and Sensing Techniques
- Infant Development and Preterm Care
- Color perception and design
- Spatial Neglect and Hemispheric Dysfunction
- Advanced MRI Techniques and Applications
- Neonatal and fetal brain pathology
- Advanced Neuroimaging Techniques and Applications
- Neuroscience and Neural Engineering
- Infant Health and Development
- Neurobiology of Language and Bilingualism
- Neuroscience and Neuropharmacology Research
- Eating Disorders and Behaviors
- Memory and Neural Mechanisms
- Motor Control and Adaptation
University of Lausanne
2015-2024
Vanderbilt University
2015-2024
The Sense Innovation and Research Center
2021-2024
Tufts Medical Center
1999-2024
Centre d'Imagerie BioMedicale
2014-2023
University Hospital of Lausanne
2011-2023
Vanderbilt University Medical Center
2010-2023
Group Sense (China)
2023
HES-SO University of Applied Sciences and Arts Western Switzerland
2023
Fondation Asile des Aveugles
2017-2022
This paper describes methods to analyze the brain's electric fields recorded with multichannel Electroencephalogram (EEG) and demonstrates their implementation in software CARTOOL. It focuses on analysis of spatial properties these quantitative assessment changes field topographies across time, experimental conditions, or populations. Topographic analyses are advantageous because they reference independents thus render statistically unambiguous results. Neurophysiologically, differences...
Using high-field (3 Tesla) functional magnetic resonance imaging (fMRI), we demonstrate that auditory and somatosensory inputs converge in a subregion of human cortex along the superior temporal gyrus. Further, simultaneous stimulation both sensory modalities resulted activity exceeding predicted by summing responses to unisensory inputs, thereby showing multisensory integration this convergence region. Recently, intracranial recordings macaque monkeys have shown similar...
Multisensory interactions are observed in species from single-cell organisms to humans. Important early work was primarily carried out the cat superior colliculus and a set of critical parameters for their occurrence were defined. Primary among these temporal synchrony spatial alignment bisensory inputs. Here, we assessed whether also parameter temporally earliest multisensory that lower-level sensory cortices human. While humans have been shown behaviorally spatially disparate stimuli (e.g....
<h3>Background</h3> Schizophrenia is associated with well-documented deficits in high-order cognitive processes such as attention and executive functioning. The integrity of sensory-level processing, however, has been evaluated only to a limited degree. Our study the ability patients schizophrenia recognize complete objects based on fragmentary information, process termed<i>perceptual closure.</i>Perceptual closure are indexed by negativity (N<sub>cl</sub>), recently defined event-related...
Because environmental information is often suboptimal, visual perception must frequently rely on the brain's reconstruction of contours absent from retinal images. Illusory contour (IC) stimuli have been used to investigate these "filling-in" processes. Intracranial recordings and neuroimaging studies show IC sensitivity in lower-tier area V2, a lesser extent V1. Some interpret data as evidence for feedforward processing stimuli, beginning at areas. On basis lesion, evoked potentials (VEP),...
Whether signals from different sensory modalities converge and interact within primary cortices in humans is unresolved, despite emerging evidence animals. This partially because of debates concerning the appropriate analyses functional magnetic resonance imaging (fMRI) data response to multisensory phenomena. Using event-related fMRI, we observed that simple auditory stimuli (noise bursts) activated visual (checkerboards) cortices, indicative convergence. Moreover, blood oxygen...
Abstract Object recognition is achieved even in circumstances when only partial information available to the observer. Perceptual closure processes are essential enabling such recognitions occur. We presented successively less fragmented images while recording high-density event-related potentials (ERPs), which permitted us monitor brain activity during perceptual leading up object recognition. reveal a bilateral ERP component (Ncl) that tracks these (onsets ∼ 230 msec, maximal at ∼290...
Electrical neuroimaging in humans identified the speed and spatiotemporal brain mechanism whereby sounds of living man-made objects are discriminated. Subjects performed an “oddball” target detection task, selectively responding to either or on alternating blocks, which were controlled for their spectrogram harmonics-to-noise ratios between categories. Analyses conducted 64-channel auditory evoked potentials (AEPs) from nontarget trials. Comparing responses versus objects, these analyses...