A5014976873- Neural dynamics and brain function
- Visual perception and processing mechanisms
- Functional Brain Connectivity Studies
- Face Recognition and Perception
- Multisensory perception and integration
- Advanced MRI Techniques and Applications
- EEG and Brain-Computer Interfaces
- Neural and Behavioral Psychology Studies
- Medical Image Segmentation Techniques
- Visual Attention and Saliency Detection
- Olfactory and Sensory Function Studies
- Medical Imaging Techniques and Applications
- Embodied and Extended Cognition
- Ophthalmology and Visual Impairment Studies
- Neuroscience and Neuropharmacology Research
- Memory and Neural Mechanisms
- Advanced Neural Network Applications
- Advanced Vision and Imaging
- Cell Image Analysis Techniques
- Tactile and Sensory Interactions
- Optical Imaging and Spectroscopy Techniques
- Neuroscience and Music Perception
- Retinal Development and Disorders
- Schizophrenia research and treatment
- Advanced Neuroimaging Techniques and Applications
University of Glasgow
2016-2025
Queen Elizabeth University Hospital
2021-2024
Wellcome Centre for Human Neuroimaging
2009-2024
Netherlands Institute for Neuroscience
2013-2024
Lars Research Institute
2021
Google (United States)
2017
Cognitive Neuroimaging Lab
2010-2016
Royal Netherlands Academy of Arts and Sciences
2013
Cardiovascular Center Frankfurt
2005-2010
Brain (Germany)
2005-2010
Abstract Echoplanar functional magnetic resonance imaging was used to monitor activation changes of brain areas while subjects viewed apparent motion stimuli and they were engaged in imagery. Human cortical MT (V5) MST the first ‘dorsal’ processing stream which responded with a clear increase signal intensity as compared flickering control conditions. Apparent figures defined by illusory contours evoked greater V2 MT/MST than appropriate Several dorsal pathway (V3A, MT/MST, inferior superior...
In this functional magnetic resonance imaging study we tested whether the predictability of stimuli affects responses in primary visual cortex (V1). The results indicate that evoke smaller V1 when their onset or motion direction can be predicted from dynamics surrounding illusory motion. We conclude finding human brain anticipates forthcoming sensory input allows predictable to processed with less neural activation at early stages cortical processing.
Human early visual cortex was traditionally thought to process simple features such as orientation, contrast, and spatial frequency via feedforward input from the lateral geniculate nucleus (e.g., [1Spillmann L. Phenomenology neurophysiological correlations: two approaches perception research.Vision Res. 2009; 49: 1507-1521Crossref PubMed Scopus (48) Google Scholar]). However, role of nonretinal influence on is so far insufficiently investigated despite much evidence that feedback...
Even within the early sensory areas, majority of input to any given cortical neuron comes from other neurons. To extend our knowledge contextual information that is transmitted by such lateral and feedback connections, we investigated how visually nonstimulated regions in primary visual cortex (V1) area V2 are influenced surrounding context. We used functional magnetic resonance imaging (fMRI) pattern-classification methods show representation a quarter-field carries can discriminate further...
The illusion of apparent motion can be induced when visual stimuli are successively presented at different locations. It has been shown in previous studies that motion-sensitive regions extrastriate cortex relevant for the processing motion, but it is unclear whether primary (V1) also involved representation illusory path. We investigated, human subjects, apparent-motion-related activity patches V1 representing locations along path stimulus using functional magnetic resonance imaging. Here...
The cortical integration of auditory and visual features is crucial for efficient object recognition. Previous studies have shown that audiovisual (AV) affected by where when occur. However, because relatively little known about the impact what integrated, we here investigated semantic congruency familiarity on neural correlates AV integration. We used functional magnetic resonance imaging to identify regions involved in both (congruent incongruent) familiar animal sounds images arbitrary...
Ultra high fields (7T and above) allow functional imaging with contrast-to-noise ratios improved spatial resolution. This, along hardware techniques, investigating columnar laminar responses. Using gradient-echo (GE) (T2* weighted) based sequences, layer specific responses have been recorded from human (and animal) primary visual areas. However, their increased sensitivity to large surface veins potentially clouds detecting interpreting Conversely, spin-echo (SE) (T2 sequences are less...
Complex natural sounds, such as bird singing, people talking, or traffic noise, induce decodable fMRI activation patterns in early visual cortex of sighted blindfolded participants [1]. That is, receives non-visual and potentially predictive information from audition. However, it is unclear whether the transfer auditory to areas an epiphenomenon imagery or, alternatively, driven by mechanisms independent experience. Here, we show that can decode sounds activity "visual" congenitally blind...
Abstract Visual illusions and visual imagery are conscious sensory events that lack a corresponding physical input. But while everyday mental feels distinct from incoming stimulus input, illusions, like hallucinations, under limited volitional control appear indistinguishable reality. Illusions thought to arise lower-level processes within cortices. In contrast, involves wide network of brain areas recruit early cortices for the representation imagined stimulus. Here, we combine laminar fMRI...
Abstract In recent years, brain research has indisputably entered a new epoch, driven by substantial methodological advances and digitally enabled data integration modelling at multiple scales—from molecules to the whole brain. Major are emerging intersection of neuroscience with technology computing. This science combines high-quality research, across scales, culture multidisciplinary large-scale collaboration, translation into applications. As pioneered in Europe’s Human Brain Project...
Abstract Visual illusions and mental imagery are non-physical sensory experiences that involve cortical feedback processing in the primary visual cortex. Using laminar functional magnetic resonance imaging (fMRI) two studies, we investigate if information about these internal is visible activation patterns of different layers cortex (V1). We find content decodable mainly from deep V1, whereas seemingly ‘real’ illusory superficial layers. Furthermore, shares with perceptual content, whilst...