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#1David T. Field (University of Reading)H-Index: 12
#2Nicolo Biagi (University of Reading)
Last. Laura A. Inman (University of Reading)H-Index: 3
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Abstract Retinal image motion is a composite signal that contains information about two behaviourally significant factors: self-motion and the movement of environmental objects. It is thought that the brain separates the two relevant signals, and although multiple brain regions have been identified that respond selectively to the composite optic flow signal, which brain region(s) perform the parsing process remains unknown. Here, we present original evidence that the putative human ventral intra...
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#1Talia L. RetterH-Index: 5
#2Fang JiangH-Index: 16
Last. Bruno RossionH-Index: 67
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Abstract Visual categorization is integral for our interaction with the natural environment. In this process, similar selective responses are produced to a class of variable visual inputs. Whether categorization is supported by partial (graded) or absolute (all-or-none) neural responses in high-level human brain regions is largely unknown. We address this issue with a novel frequency-sweep paradigm probing the evolution of face categorization responses between the minimum and optimal stimulus pr...
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#1Bidhan LamichhaneH-Index: 7
#2Andrew WestbrookH-Index: 8
Last. Todd S. BraverH-Index: 76
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Abstract Working memory (WM) function has traditionally been investigated in terms of two dimensions: within-individual effects of WM load, and between-individual differences in task performance. In human neuroimaging studies, the N-back task has frequently been used to study both. A reliable finding is that activation in frontoparietal regions exhibits an inverted-U pattern, such that activity tends to decrease at high load levels. Yet it is not known whether such U-shaped patterns are a key in...
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#1Anton L. BeerH-Index: 12
#2Tina PlankH-Index: 10
Last. Mark W. GreenleeH-Index: 41
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Abstract Aging and central vision loss are associated with cortical atrophies, but little is known about the relationship between cortical thinning and the underlying cellular structure. We compared the macro- and micro-structure of the cortical gray and superficial white matter of 38 patients with juvenile (JMD) or age-related (AMD) macular degeneration and 38 healthy humans (19–84 years) by multimodal MRI including diffusion-tensor imaging (DTI). A factor analysis showed that cortical thicknes...
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#1Kirsten M. Lynch (SC: University of Southern California)H-Index: 1
#2Ryan P. Cabeen (SC: University of Southern California)H-Index: 10
Last. Kristi A. Clark (SC: University of Southern California)H-Index: 18
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Abstract White matter maturation is a nonlinear and heterogeneous phenomenon characterized by axonal packing, increased axon caliber, and a prolonged period of myelination. While current in vivo diffusion MRI (dMRI) methods, like diffusion tensor imaging (DTI), have successfully characterized the gross structure of major white matter tracts, these measures lack the specificity required to unravel the distinct processes that contribute to microstructural development. Neurite orientation dispersio...
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#1Christoph PfeifferH-Index: 4
#2Silvia RuffieuxH-Index: 2
Last. Justin F. SchneidermanH-Index: 11
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Abstract Source modelling in magnetoencephalography (MEG) requires precise co-registration of the sensor array and the anatomical structure of the measured individual’s head. In conventional MEG, the positions and orientations of the sensors relative to each other are fixed and known beforehand, requiring only localization of the head relative to the sensor array. Since the sensors in on-scalp MEG are positioned on the scalp, locations of the individual sensors depend on the subject’s head shape...
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#1Anne-Kathrin BeckH-Index: 2
#1Anne-Kathrin Beck (MHH: Hannover Medical School)
Last. Joachim K. KraussH-Index: 46
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Abstract Studies with non-human primates have suggested an excitatory influence of the thalamus on the cerebral cortex, with the centromedian-parafascicular complex (CM-Pf) being particularly involved in processes of sensory event-driven attention and arousal. To define the involvement of the human CM-Pf in bottom-up and top-down auditory attention, we simultaneously recorded cortical EEG activity and intracranial local field potentials (LFPs) via electrodes implanted for deep brain stimulation ...
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#1Yohan Boillat (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 1
#2Pierre-Louis Bazin (MPG: Max Planck Society)H-Index: 31
Last. Wietske van der Zwaag (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 20
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Abstract The cerebellum is known to contain a double somatotopic body representation. While the anterior lobe body map has shown a robust somatotopic organization in previous fMRI studies, the representations in the posterior lobe have been more difficult to observe and are less precisely characterized. In this study, participants went through a simple motor task asking them to move either the eyes (left-right guided saccades), tongue (left-right movement), thumbs, little fingers or toes (flexio...
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#1Erik Domellöf (Umeå University)H-Index: 11
#2Daniel Säfström (Umeå University)H-Index: 6
Abstract In everyday behavior, we perform numerous goal-directed manual tasks that contain a sequence of actions. However, knowledge is limited regarding developmental aspects of predictive control mechanisms in such tasks, particularly with regard to brain activations supporting sequential manual actions in children. We investigated these issues in typically developing children at early adolescence (11–14 years) compared with previously collected data from adults. While lying in a MRI scanner, ...
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#1Thomas R. Barrick (St George's, University of London)H-Index: 32
#2Ca Spilling (St George's, University of London)H-Index: 1
Last. Franklyn A. Howe (St George's, University of London)H-Index: 53
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Abstract To enable application of non-Gaussian diffusion magnetic resonance imaging (dMRI) techniques in large-scale clinical trials and facilitate translation to clinical practice there is a requirement for fast, high contrast, techniques that are sensitive to changes in tissue structure which provide diagnostic signatures at the early stages of disease. Here we describe a new way to compress the acquisition of multi-shell b-value diffusion data, Quasi-Diffusion MRI (QDI), which provides a prob...
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Top fields of study
Developmental psychology
Psychology
Neuroscience
Cognitive psychology
Functional magnetic resonance imaging