G A Orban

Summary

Affiliation: Katholieke Universiteit Leuven
Country: Belgium

Publications

  1. ncbi request reprint Human cortical regions involved in extracting depth from motion
    G A Orban
    Katholieke Universiteit te Leuven, Faculty of Medicine, Laboratorium voor Neuro en Psychofysiologie, Leuven, Belgium
    Neuron 24:929-40. 1999
  2. ncbi request reprint Comment on Devlin and Poldrack
    Guy A Orban
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven Medical School, Belgium
    Neuroimage 37:1057-8; discussion 1066-8. 2007
  3. ncbi request reprint The neuronal machinery involved in successive orientation discrimination
    G A Orban
    Katholieke Universiteit te Leuven, Laboratorium voor Neuro en Psychofysiologie, Belgium
    Prog Neurobiol 55:117-47. 1998
  4. ncbi request reprint Imaging image processing in the human brain
    G A Orban
    K U Leuven, School of Medicine, Laboratorium voor Neuro en Psychofysiologie, Campus Gasthuisberg, B 3000 Leuven, Belgium
    Curr Opin Neurol 14:47-54. 2001
  5. ncbi request reprint Human brain activity related to speed discrimination tasks
    G A Orban
    Laboratorium voor Neuro en Psychofysiologie, KULeuven, Medical School, Campus Gasthuisberg, Belgium
    Exp Brain Res 122:9-22. 1998
  6. ncbi request reprint Comparative mapping of higher visual areas in monkeys and humans
    Guy A Orban
    Lab Neuro en Psychofysiologie, K U Leuven, Medical School, Campus Gasthuisberg, Herestraat 49, B 3000 Leuven, Belgium
    Trends Cogn Sci 8:315-24. 2004
  7. ncbi request reprint Functional MRI in the awake monkey: the missing link
    Guy A Orban
    Laboratory of Neuro and Psychophysiology, Medical School, Katholieke Universiteit Leuven, Campus Gasthuisberg, Herestraat 49, B 3000 Louvain, Belgium
    J Cogn Neurosci 14:965-9. 2002
  8. ncbi request reprint Attention-dependent suppression of metabolic activity in the early stages of the macaque visual system
    W Vanduffel
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Campus Gasthuisberg, Herestraat 49, Leuven B 3000, Belgium
    Cereb Cortex 10:109-26. 2000
  9. ncbi request reprint Extracting 3D from motion: differences in human and monkey intraparietal cortex
    W Vanduffel
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Campus Gasthuisberg, Herestraat 49, Leuven B 3000, Belgium
    Science 298:413-5. 2002
  10. ncbi request reprint Brain activity underlying stereotyped and non-stereotyped retrieval of learned stimulus-response associations
    R Vandenberghe
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Belgium
    Eur J Neurosci 11:4037-50. 1999

Collaborators

Detail Information

Publications64

  1. ncbi request reprint Human cortical regions involved in extracting depth from motion
    G A Orban
    Katholieke Universiteit te Leuven, Faculty of Medicine, Laboratorium voor Neuro en Psychofysiologie, Leuven, Belgium
    Neuron 24:929-40. 1999
    ....
  2. ncbi request reprint Comment on Devlin and Poldrack
    Guy A Orban
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven Medical School, Belgium
    Neuroimage 37:1057-8; discussion 1066-8. 2007
  3. ncbi request reprint The neuronal machinery involved in successive orientation discrimination
    G A Orban
    Katholieke Universiteit te Leuven, Laboratorium voor Neuro en Psychofysiologie, Belgium
    Prog Neurobiol 55:117-47. 1998
    ..By the same token, a comparison of these two tasks, which use the same input and the same attribute, demonstrates the task dependency of processing in the human and non-human primate visual system...
  4. ncbi request reprint Imaging image processing in the human brain
    G A Orban
    K U Leuven, School of Medicine, Laboratorium voor Neuro en Psychofysiologie, Campus Gasthuisberg, B 3000 Leuven, Belgium
    Curr Opin Neurol 14:47-54. 2001
    ....
  5. ncbi request reprint Human brain activity related to speed discrimination tasks
    G A Orban
    Laboratorium voor Neuro en Psychofysiologie, KULeuven, Medical School, Campus Gasthuisberg, Belgium
    Exp Brain Res 122:9-22. 1998
    ..These results confirm that processing in the human visual cortex is task dependent and underscore the role of the middle fusiform gyrus in temporal comparison of simple attributes...
  6. ncbi request reprint Comparative mapping of higher visual areas in monkeys and humans
    Guy A Orban
    Lab Neuro en Psychofysiologie, K U Leuven, Medical School, Campus Gasthuisberg, Herestraat 49, B 3000 Leuven, Belgium
    Trends Cogn Sci 8:315-24. 2004
    ..In the long term, fMRI offers opportunities to compare the functional anatomy of a variety of cognitive functions in the two species...
  7. ncbi request reprint Functional MRI in the awake monkey: the missing link
    Guy A Orban
    Laboratory of Neuro and Psychophysiology, Medical School, Katholieke Universiteit Leuven, Campus Gasthuisberg, Herestraat 49, B 3000 Louvain, Belgium
    J Cogn Neurosci 14:965-9. 2002
  8. ncbi request reprint Attention-dependent suppression of metabolic activity in the early stages of the macaque visual system
    W Vanduffel
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Campus Gasthuisberg, Herestraat 49, Leuven B 3000, Belgium
    Cereb Cortex 10:109-26. 2000
    ....
  9. ncbi request reprint Extracting 3D from motion: differences in human and monkey intraparietal cortex
    W Vanduffel
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Campus Gasthuisberg, Herestraat 49, Leuven B 3000, Belgium
    Science 298:413-5. 2002
    ..In contrast, intraparietal areas showed significant 3D-SFM activation in humans but not in monkeys. This suggests that human intraparietal cortex contains visuospatial processing areas that are not present in monkeys...
  10. ncbi request reprint Brain activity underlying stereotyped and non-stereotyped retrieval of learned stimulus-response associations
    R Vandenberghe
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Belgium
    Eur J Neurosci 11:4037-50. 1999
    ....
  11. ncbi request reprint Maintaining and shifting attention within left or right hemifield
    R Vandenberghe
    Laboratorium voor Neuroen Psychofysiologie, Katholieke Universiteit Leuven, Belgium
    Cereb Cortex 10:706-13. 2000
    ..The current experiment confirms that left frontal convexity is sensitive to manipulations of the direction of visuospatial attention. The results do not indicate a specific role of parietal cortex in attentional shifting...
  12. ncbi request reprint Visual motion processing investigated using contrast agent-enhanced fMRI in awake behaving monkeys
    W Vanduffel
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Campus Gasthuisberg, Herestraat 49, Belgium
    Neuron 32:565-77. 2001
    ..Moving lines activate some regions that have not been previously implicated in motion processing. Overall, the results clarify the relationship between the motion pathway and the dorsal stream in primates...
  13. ncbi request reprint Regional brain activity during shape recognition impaired by a scopolamine challenge to encoding
    A M Rosier
    Laboratorium voor Neuro en Psychofysiologie, KU Leuven, Medical School, Campus Gasthuisberg, Leuven, Belgium
    Eur J Neurosci 11:3701-14. 1999
    ..In addition, in the intraparietal sulcus, differential activation also increased following impaired memory storage, possibly reflecting enhanced visuospatial attention in an effort to compensate for impaired performance...
  14. ncbi request reprint Cerebral regions processing first- and higher-order motion in an opposed-direction discrimination task
    P Dupont
    K U Leuven, Laboratorium voor Neuro en Psychofysiologie Campus Gasthuisberg, B 3000 Leuven, Belgium
    Eur J Neurosci 17:1509-17. 2003
    ..From this we conclude that, under our experimental conditions, the same cerebral regions are involved in the processing of first-order and higher-order motion in an opposed-direction discrimination task...
  15. ncbi request reprint Using functional magnetic resonance imaging to assess adaptation and size invariance of shape processing by humans and monkeys
    Hiromasa Sawamura
    Laboratorium voor Neuroen Psychofysiologie, K U Leuven Medical School, Campus Gashuisberg, B 3000 Leuven, Belgium
    J Neurosci 25:4294-306. 2005
    ..The results provide additional evidence for the homology between the macaque IT cortex and human LOC but also add to the growing list of differences between human and monkey intraparietal sulcus regions...
  16. ncbi request reprint Investigation of cortical reorganization in area 17 and nine extrastriate visual areas through the detection of changes in immediate early gene expression as induced by retinal lesions
    L Arckens
    Laboratory of Neuroendocrinology and Immunological Biotechnology, Katholieke Universiteit Leuven, B 3000 Leuven, Belgium
    J Comp Neurol 425:531-44. 2000
    ....
  17. pmc Positron-emission tomography imaging of long-term shape recognition challenges
    A Rosier
    Laboratorium voor Neuro en Psychofysiologie, Universite Catholique de Leuven Medical School, Campus Gasthuisberg, Herestraat 49, B 3000 Leuven, Belgium
    Proc Natl Acad Sci U S A 94:7627-32. 1997
    ..In contrast, thalamic differential activation increased in response to memory challenges. This increase might reflect enhanced retrieval attempts as a compensatory mechanism for restoring recognition performance...
  18. ncbi request reprint Human brain regions involved in heading estimation
    H Peuskens
    Laboratorium voor Neuro- en Psychofysiologie, KULeuven, Medical School, Campus Gasthuisberg, B-3000 Leuven, Belgium
    J Neurosci 21:2451-61. 2001
    ..These results suggest possible homologies with the dorsal part of the medial superior temporal area and area 7a in the monkey...
  19. ncbi request reprint Similarities and differences in motion processing between the human and macaque brain: evidence from fMRI
    Guy A Orban
    K U Leuven, Laboratorium voor Neuro en Pyschofysiologie, Campus Gasthuisberg, Herestraat 49, B 3000 Leuven, Belgium
    Neuropsychologia 41:1757-68. 2003
    ..On the other hand, striking functional differences also emerged: in humans V3A and several regions in the intraparietal sulcus (IPS) are much more motion sensitive than their simian counterparts...
  20. ncbi request reprint The processing of visual shape in the cerebral cortex of human and nonhuman primates: a functional magnetic resonance imaging study
    Katrien Denys
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven Medical School, Campus Gasthuisberg, B 3000 Leuven, Belgium
    J Neurosci 24:2551-65. 2004
    ..The shape-sensitive regions can be used to constrain the warping of monkey to human cortex and suggest a large expansion of lateral parietal and superior temporal cortex in humans compared with monkeys...
  21. ncbi request reprint Mapping the parietal cortex of human and non-human primates
    Guy A Orban
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven, Medical School, Leuven, Belgium
    Neuropsychologia 44:2647-67. 2006
    ..This additional cortical tissue may provide the capacity for an enhanced visual analysis of moving images necessary for sophisticated control of manipulation and tool handling...
  22. doi request reprint Searching for a salient target involves frontal regions
    Claire Wardak
    Laboratorium voor Neuro en Psychofysiologie, KU Leuven Medical School, Campus Gasthuisberg, 3000 Leuven, Belgium
    Cereb Cortex 20:2464-77. 2010
    ..Our results show that efficient search involves frontal regions as much as visual regions and in particular that ventral prefrontal area 45 is involved in top-down control during efficient search...
  23. ncbi request reprint The neural substrate of orientation short-term memory and resistance to distractor items
    L Cornette
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Medical School, Campus Gasthuisberg, Herestraat 49, B 3000 Leuven, Belgium
    Eur J Neurosci 15:165-75. 2002
    ..These results, combined with those of two previous studies using an identical reduction strategy, underscore the functional heterogeneity in the prefrontal cortex during short-term and working memory...
  24. ncbi request reprint Functional impact of cerebral projection systems
    W Vanduffel
    Laboratorium voor Neuro en Psychofysiologie, Faculteit Geneeskunde, Gasthuisberg, Leuven, Belgium
    Mol Psychiatry 3:215-9. 1998
    ..We describe a new combination of a metabolic mapping and a reversible deactivation technique in an animal model to assess the functional impact of cerebral connections...
  25. ncbi request reprint Scopolamine-induced impairment of delayed recognition of abstract visual shapes
    A Rosier
    Laboratorium voor Neurofysiologie, KU Leuven Medical School, Belgium
    Neuropsychobiology 37:98-103. 1998
    ....
  26. ncbi request reprint Attentional responses to unattended stimuli in human parietal cortex
    R Vandenberghe
    Neurology Department, KU LeuvenLeuven, Belgium
    Brain 128:2843-57. 2005
    ..Functional imaging in neglect patients will be necessary to assess IPS function in those cases where the structural lesion spares the middle IPS segment...
  27. doi request reprint A distinct representation of three-dimensional shape in macaque anterior intraparietal area: fast, metric, and coarse
    Siddharth Srivastava
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven Medical School, B 3000 Leuven, Belgium
    J Neurosci 29:10613-26. 2009
    ..Unlike the known representation of three-dimensional shape in inferior temporal cortex, the neural representation in AIP appears to emphasize object parameters required for the planning of grasping movements...
  28. ncbi request reprint Color discrimination involves ventral and dorsal stream visual areas
    Kristl G Claeys
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven, Medical School, Herestraat 49, B3000 Leuven, Belgium
    Cereb Cortex 14:803-22. 2004
    ..These experiments demonstrated that even with color as the attribute, successive discrimination, in which a decision process has to link visual signals to motor responses, involves both ventral and dorsal visual stream areas...
  29. ncbi request reprint The organization of orientation selectivity throughout macaque visual cortex
    Wim Vanduffel
    Laboratorium voor Neuro and Psychofysiologie, Katholieke Universiteit Leuven, Faculteit Geneeskunde, Campus Gasthuisberg, Herestraat 49, B 3000, Belgium
    Cereb Cortex 12:647-62. 2002
    ..In parafoveal but not foveal visual field representations of V2, the orientation columns were centered on the thick cytochrome oxidase stripes, extended into the adjacent interstripe region, but were virtually absent in the thin stripes...
  30. ncbi request reprint Convergence of depth from texture and depth from disparity in macaque inferior temporal cortex
    Yan Liu
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven Medical School, Campus Gasthuisberg, B3000 Leuven, Belgium
    J Neurosci 24:3795-800. 2004
    ..Furthermore, the tilt preference was invariant over different types of textures and slants, suggesting an abstract representation of surface tilt in ventral visual cortex...
  31. ncbi request reprint Cooperative changes in GABA, glutamate and activity levels: the missing link in cortical plasticity
    L Arckens
    Laboratory of Neuroendocrinology and Immunological Biotechnology, Katholieke Universiteit Leuven, Naamsestraat 59, B 3000 Leuven, Belgium
    Eur J Neurosci 12:4222-32. 2000
    ....
  32. ncbi request reprint Specificity of regions processing biological motion
    H Peuskens
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven, Campus Gasthuisberg O and N, Herestraat 49, B 3000 Leuven, Belgium
    Eur J Neurosci 21:2864-75. 2005
    ..These results were confirmed with implied action stimuli...
  33. ncbi request reprint Charting the lower superior temporal region, a new motion-sensitive region in monkey superior temporal sulcus
    Koen Nelissen
    Laboratorium voor Neurofysiologie en Psychofysiologie, K U Leuven Medical School, Campus Gasthuisberg, 3000 Leuven, Belgium
    J Neurosci 26:5929-47. 2006
    ..This ventral path including the LST region, FST area, and STPm region is likely involved in the visual analysis of actions and biological motion...
  34. ncbi request reprint Selectivity of neuronal adaptation does not match response selectivity: a single-cell study of the FMRI adaptation paradigm
    Hiromasa Sawamura
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven Medical School, Campus Gasthuisberg, B3000 Leuven, Belgium
    Neuron 49:307-18. 2006
    ..The neuronal adaptation at the single-cell level showed a greater degree of stimulus selectivity than the responses. This complicates the interpretation of fMR-A paradigms when inferring neuronal selectivity...
  35. ncbi request reprint Shape selectivity for camouflage-breaking dynamic stimuli in dorsal V4 neurons
    Santosh G Mysore
    Laboratorium voor Neuro en Psychofysiologie, O and N2, Gasthuisberg, K U Leuven Medical School, Leuven, Belgium
    Cereb Cortex 18:1429-43. 2008
    ..Cue-invariant shape selectivity was more pronounced when kinetic shapes included the temporal frequency cue. This invariance may be rooted in nonlinearities occurring early in the visual pathway...
  36. doi request reprint Higher order visual processing in macaque extrastriate cortex
    Guy A Orban
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven Medical School, Leuven, Belgium
    Physiol Rev 88:59-89. 2008
    ..The most common putative mechanism for generating such emergent selectivity is the pattern of excitatory and inhibitory linear inputs from the afferent area combined with nonlinear mechanisms in the afferent and receiving area...
  37. doi request reprint The processing of three-dimensional shape from disparity in the human brain
    Svetlana Georgieva
    Laboratorium voor Neurofysiologie en Psychofysiologie, Katholieke Universiteit te Leuven, Faculteit Geneeskunde, Leuven, Belgium
    J Neurosci 29:727-42. 2009
    ..Interestingly, activity in these occipital regions correlates with the depth amplitude perceived by the subjects in the 3D surfaces used as stimuli in these fMRI experiments...
  38. ncbi request reprint The retinotopic organization of primate dorsal V4 and surrounding areas: A functional magnetic resonance imaging study in awake monkeys
    Denis Fize
    Laboratorium voor Neuroen Psychofysiologie, Katholieke Universiteit Leuven, Campus Gasthuisberg, Leuven B 3000, Belgium
    J Neurosci 23:7395-406. 2003
    ..This finding indicates that early visual cortex is mostly conserved throughout hominid evolution...
  39. doi request reprint Coding of images of materials by macaque inferior temporal cortical neurons
    Károly Köteles
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven Medical School, Campus Gasthuisberg, B3000 Leuven, Belgium
    Eur J Neurosci 27:466-82. 2008
    ....
  40. doi request reprint The retinotopic organization of the human middle temporal area MT/V5 and its cortical neighbors
    Hauke Kolster
    Laboratorium voor Neurofysiologie en Psychofysiologie, Katholieke Universiteit Leuven Medical School, Campus Gasthuisberg, 3000 Leuven, Belgium
    J Neurosci 30:9801-20. 2010
    ..Together with similarities in retinotopic organization and topological neighborhood, the functional properties suggest that MT/V5 in human and macaque cortex are homologous...
  41. doi request reprint Coding of shape and position in macaque lateral intraparietal area
    Peter Janssen
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven Medical School, B 3000 Leuven, Belgium
    J Neurosci 28:6679-90. 2008
    ..Furthermore, the shape representation in the dorsal visual stream appears to differ radically from the known representation of shape in the ventral visual stream...
  42. pmc The extraction of 3D shape from texture and shading in the human brain
    Svetlana S Georgieva
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven School of Medicine, Campus Gasthuisberg, B 3000 Leuven, Belgium
    Cereb Cortex 18:2416-38. 2008
    ....
  43. doi request reprint Human functional magnetic resonance imaging reveals separation and integration of shape and motion cues in biological motion processing
    Jan Jastorff
    Laboratorium voor Neuro en Psychophysiologie, Katholieke Universiteit Leuven Medical School, B 3000 Leuven, Belgium
    J Neurosci 29:7315-29. 2009
    ....
  44. doi request reprint The selectivity of neurons in the macaque fundus of the superior temporal area for three-dimensional structure from motion
    Santosh G Mysore
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven Medical School, 3000 Leuven, Belgium
    J Neurosci 30:15491-508. 2010
    ..Overall, these results indicate that FST neurons code motion-defined 3D shape fragments, underscoring the central role of FST in processing 3D-SFM...
  45. pmc The extraction of depth structure from shading and texture in the macaque brain
    Koen Nelissen
    Laboratorium voor Neuro and Psychofysiologie, K U Leuven Medical School, Leuven, Belgium
    PLoS ONE 4:e8306. 2009
    ....
  46. doi request reprint The monkey ventral premotor cortex processes 3D shape from disparity
    Olivier Joly
    Lab Neuro en Psychofysiologie, K U Leuven, Medical School, Campus Gasthuisberg, Herestraat 49, B 3000, Leuven, Belgium
    Neuroimage 47:262-72. 2009
    ..In conclusion, our data point to a distributed functional network, including TEs, AIP and F5a, involved in the analysis of stereoscopic 3D shape information and its potential use in the visual control of grasping...
  47. pmc Anterior regions of monkey parietal cortex process visual 3D shape
    Jean Baptiste Durand
    Lab Neuro en Psychofysiologie, K U Leuven, Medical School, Campus Gasthuisberg, Herestraat 49, B 3000, Leuven, Belgium
    Neuron 55:493-505. 2007
    ..These results indicate that extracting 3D spatial information from stereo involves several intraparietal areas, among which AIP and anterior LIP are more specifically engaged in extracting the 3D shape of objects...
  48. ncbi request reprint At least at the level of inferior temporal cortex, the stereo correspondence problem is solved
    Peter Janssen
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven Medical School, Herestraat 49, B 3000 Leuven, Belgium
    Neuron 37:693-701. 2003
    ..These results show that the correspondence problem is solved at least in far extrastriate cortex, as it is in the monkey's perception...
  49. ncbi request reprint A higher order motion region in human inferior parietal lobule: evidence from fMRI
    Kristl G Claeys
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven, Campus Gasthuisberg, Herestraat 49, B 3000 Leuven, Belgium
    Neuron 40:631-42. 2003
    ....
  50. ncbi request reprint Attention to 3-D shape, 3-D motion, and texture in 3-D structure from motion displays
    Hendrik Peuskens
    K U Leuven, Medical School, Belgium
    J Cogn Neurosci 16:665-82. 2004
    ....
  51. ncbi request reprint Processing of kinetic boundaries in macaque V4
    Santosh G Mysore
    Lab voor Neuro en Psychofysiologie, K U Leuven Medical School, Campus Gasthuisberg, Leuven B 3000, Belgium
    J Neurophysiol 95:1864-80. 2006
    ..The neurons selective for kinetic patterns tended to be clustered within dorsal V4...
  52. ncbi request reprint Observing others: multiple action representation in the frontal lobe
    Koen Nelissen
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven Medical School, Leuven, Belgium
    Science 310:332-6. 2005
    ..Observation of shapes activated area 45, but not premotor F5. Convergence of object and action information in area 45 may be important for full comprehension of actions...
  53. doi request reprint Parietal regions processing visual 3D shape extracted from disparity
    Jean Baptiste Durand
    Laboratorium voor Neuro en Psychofysiologie, KU Leuven Medical School, Leuven, Belgium
    Neuroimage 46:1114-26. 2009
    ..Neuron 55, 493-505 obtained in the monkey indicates that DIPSA and DIPSM may represent human homologues for the posterior part of AIP and the adjoining part of LIP respectively...
  54. ncbi request reprint Extracting 3D structure from disparity
    Guy A Orban
    Laboratorium voor Neuro en Psychofysiologie, K U Leuven, Medical School, Campus Gasthuisberg, Herestraat 49 1021, BE 3000 Leuven, Belgium
    Trends Neurosci 29:466-73. 2006
    ..Thus, stereoscopic 3D shape is processed in both the dorsal, occipito-parietal and the ventral, occipito-temporal streams...
  55. ncbi request reprint Parietal representation of symbolic and nonsymbolic magnitude
    Wim Fias
    Ghent University
    J Cogn Neurosci 15:47-56. 2003
    ..In addition, the interaction between task and type of stimulus identified a region anterior to the conjunction site, not specific for quantitative processing, but reflecting general processes loaded by number processing...
  56. ncbi request reprint Search for color 'center(s)' in macaque visual cortex
    Roger B H Tootell
    Nuclear Magnetic Resonance Center, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, Boston, MA 02115, USA
    Cereb Cortex 14:353-63. 2004
    ..Consistent with a recent hypothesis, V4 was not uniquely specialized for color processing, but areas located antero-ventral to V4 (in/near TEO and anterior TE) showed more color-biased activity...
  57. ncbi request reprint Visual activation in prefrontal cortex is stronger in monkeys than in humans
    Katrien Denys
    K U Leuven Medical School, B 3000 Leuven, Belgium
    J Cogn Neurosci 16:1505-16. 2004
    ..This difference was observed for two different stimulus sets, at two field strengths, and over a range of tasks. These results suggest that there may be more volitional control over visual processing in humans than in monkeys...
  58. ncbi request reprint Stereopsis activates V3A and caudal intraparietal areas in macaques and humans
    Doris Y Tsao
    Massachusetts General Hospital, NMR Center, Athinoula A Martinos Center, Charlestown, Massachusetts 02129, USA
    Neuron 39:555-68. 2003
    ..Thus, in both primate species a small cluster of areas at the parieto-occipital junction appears to be specialized for stereopsis...
  59. ncbi request reprint Learning to see the difference specifically alters the most informative V4 neurons
    Steven Raiguel
    Laboratorium voor Neuro en Psychofysiologie, Katholieke Universiteit Leuven Medical School, BE 3000 Leuven, Belgium
    J Neurosci 26:6589-602. 2006
    ..Thus, we conclude that it is the most informative V4 neurons, those most directly involved in the discrimination, that are specifically modified by perceptual learning...
  60. ncbi request reprint Processing of abstract ordinal knowledge in the horizontal segment of the intraparietal sulcus
    Wim Fias
    Department of Experimental Psychology, Ghent University, Gent, Belgium
    J Neurosci 27:8952-6. 2007
    ..This extends the numerical processing function of IPS into the realm of abstract knowledge processing...
  61. ncbi request reprint A hippocampal-parietal network for learning an ordered sequence
    Filip Van Opstal
    Department of Experimental Psychology, Ghent University, H Dunantlaan 2, Ghent, Belgium
    Neuroimage 40:333-41. 2008
    ..This suggests an involvement of the angular gyrus in learning the ordinal associations between the stimuli...
  62. ncbi request reprint Involvement of multiple functionally distinct cerebellar regions in visual discrimination: a human functional imaging study
    Kristl G Claeys
    Laboratory of Theoretical Neurobiology, Born Bunge Foundation, University of Antwerp U A, Universiteitsplein 1, B2610, Antwerpen, Belgium
    Neuroimage 20:840-54. 2003
    ..We conclude that successive color discrimination activates multiple, functionally distinct cerebellar regions...
  63. ncbi request reprint The quantitative nature of a visual task differentiates between ventral and dorsal stream
    Wim Fias
    Ghent University
    J Cogn Neurosci 14:646-58. 2002
    ..These results demonstrate that a single attribute can be processed either in the ventral or dorsal stream, depending on the cognitive operations required by the tasks...
  64. ncbi request reprint Repeated fMRI using iron oxide contrast agent in awake, behaving macaques at 3 Tesla
    Francisca P Leite
    Massachusetts Institute of Technology, Department of Nuclear Engineering, Cambridge, Massachusetts 02139, USA
    Neuroimage 16:283-94. 2002
    ..Overall, the contrast agent produced a dramatic improvement in functional brain imaging results in the awake, behaving primate at this field strength. (c) 2002 Elsevier Science (USA)...