K J Worsley

Summary

Affiliation: McGill University
Country: Canada

Publications

  1. ncbi request reprint Applications of random field theory to functional connectivity
    K J Worsley
    Department of Mathematics and Statistics, McGill University, Montreal, Quebec, Canada
    Hum Brain Mapp 6:364-7. 1998
  2. ncbi request reprint Detecting fMRI activation allowing for unknown latency of the hemodynamic response
    K J Worsley
    McGill University, Montreal, Quebec, Canada
    Neuroimage 29:649-54. 2006
  3. ncbi request reprint An improved theoretical P value for SPMs based on discrete local maxima
    K J Worsley
    Department of Mathematics and Statistics, McGill University, Montreal, Quebec, Canada
    Neuroimage 28:1056-62. 2005
  4. ncbi request reprint Spatial smoothing of autocorrelations to control the degrees of freedom in fMRI analysis
    K J Worsley
    Department of Mathematics and Statistics, McGill University, West, Montreal, Quebec, Canada
    Neuroimage 26:635-41. 2005
  5. ncbi request reprint Detecting activation in fMRI data
    K J Worsley
    Department of Mathematics and Statistics, and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
    Stat Methods Med Res 12:401-18. 2003
  6. ncbi request reprint Detecting changes in nonisotropic images
    K J Worsley
    Department of Mathematics and Statistics, McGill University, Montreal, Quebec, Canada
    Hum Brain Mapp 8:98-101. 1999
  7. ncbi request reprint Estimating the delay of the fMRI response
    C H Liao
    Department of Mathematics and Statistics, McGill University, Canada
    Neuroimage 16:593-606. 2002
  8. ncbi request reprint A general statistical analysis for fMRI data
    K J Worsley
    Department of Mathematics and Statistics, McGill University, Montreal, Canada
    Neuroimage 15:1-15. 2002
  9. ncbi request reprint Structural asymmetries in the human brain: a voxel-based statistical analysis of 142 MRI scans
    K E Watkins
    Cognitive Neuroscience Unit, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
    Cereb Cortex 11:868-77. 2001
  10. ncbi request reprint A unified statistical approach to deformation-based morphometry
    M K Chung
    Department of Mathematics and Statistics, McGill University, , , Canada
    Neuroimage 14:595-606. 2001

Collaborators

Detail Information

Publications14

  1. ncbi request reprint Applications of random field theory to functional connectivity
    K J Worsley
    Department of Mathematics and Statistics, McGill University, Montreal, Quebec, Canada
    Hum Brain Mapp 6:364-7. 1998
    ..This can be applied to crosscorrelations between two different sets of images--such as activations under two different tasks, as well as autocorrelations within the same set of images...
  2. ncbi request reprint Detecting fMRI activation allowing for unknown latency of the hemodynamic response
    K J Worsley
    McGill University, Montreal, Quebec, Canada
    Neuroimage 29:649-54. 2006
    ..In this paper, we show how to use random field theory to provide a P value for local maxima of two test statistics that have been recently proposed for detecting activation based on this analysis...
  3. ncbi request reprint An improved theoretical P value for SPMs based on discrete local maxima
    K J Worsley
    Department of Mathematics and Statistics, McGill University, Montreal, Quebec, Canada
    Neuroimage 28:1056-62. 2005
    ..It resulted in P values that were approximately 43% lower than the best of Bonferroni or random field theory methods when applied to a typical fMRI data set...
  4. ncbi request reprint Spatial smoothing of autocorrelations to control the degrees of freedom in fMRI analysis
    K J Worsley
    Department of Mathematics and Statistics, McGill University, West, Montreal, Quebec, Canada
    Neuroimage 26:635-41. 2005
    ..to avoid unnecessary smoothing beyond 100 df. Our results on a typical 6-min, TR = 3, 1.5-T fMRI data set show that 8.5-mm smoothing is needed to achieve 100 df, and this results in roughly a doubling of detected activations...
  5. ncbi request reprint Detecting activation in fMRI data
    K J Worsley
    Department of Mathematics and Statistics, and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
    Stat Methods Med Res 12:401-18. 2003
    ..We show how the Euler characteristic of the excursion set plays a key role in setting the threshold of the image to detect regions of the brain activated by a stimulus...
  6. ncbi request reprint Detecting changes in nonisotropic images
    K J Worsley
    Department of Mathematics and Statistics, McGill University, Montreal, Quebec, Canada
    Hum Brain Mapp 8:98-101. 1999
    ..The subsequent corrected P values do not depend on finding this warping; it is sufficient only to know that such a warping exists...
  7. ncbi request reprint Estimating the delay of the fMRI response
    C H Liao
    Department of Mathematics and Statistics, McGill University, Canada
    Neuroimage 16:593-606. 2002
    ..Our method is compared to other alternatives and validated on an fMRI data set from an experiment in pain perception...
  8. ncbi request reprint A general statistical analysis for fMRI data
    K J Worsley
    Department of Mathematics and Statistics, McGill University, Montreal, Canada
    Neuroimage 15:1-15. 2002
    ....
  9. ncbi request reprint Structural asymmetries in the human brain: a voxel-based statistical analysis of 142 MRI scans
    K E Watkins
    Cognitive Neuroscience Unit, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
    Cereb Cortex 11:868-77. 2001
    ..The above asymmetries were observed in men and women. Our results thus provide confirmation of the known structural asymmetries in the human brain as well as new findings that may stimulate further research of hemispheric specialization...
  10. ncbi request reprint A unified statistical approach to deformation-based morphometry
    M K Chung
    Department of Mathematics and Statistics, McGill University, , , Canada
    Neuroimage 14:595-606. 2001
    ..Using structural magnetic resonance images for 28 children and adolescents taken at different time intervals, we demonstrate how this method works...
  11. ncbi request reprint Multiple sclerosis: magnetization transfer MR imaging of white matter before lesion appearance on T2-weighted images
    G B Pike
    McConnell Brain Imaging Center, Montreal Neurological Institute, 3801 University St, Montreal, Quebec, Canada
    Radiology 215:824-30. 2000
    ..To determine the evolution of magnetization transfer (MT) in white matter regions before and after plaque development in patients with multiple sclerosis (MS)...
  12. pmc Longitudinal and cross-sectional analysis of atrophy in pharmacoresistant temporal lobe epilepsy
    B C Bernhardt
    Department of Neurology, Montreal Neurological Institute and Hospital, McGill University, Quebec, Canada
    Neurology 72:1747-54. 2009
    ..These studies concluded that epilepsy does not inevitably lead to global cerebral damage...
  13. ncbi request reprint Inference for magnitudes and delays of responses in the FIAC data using BRAINSTAT/FMRISTAT
    J E Taylor
    Stanford University, Stanford, California, USA
    Hum Brain Mapp 27:434-41. 2006
    ..08% +/- 0.17%) and delay (0.153 +/- 0.035 s) for different sentences compared to same sentences, together with a smaller but still significantly greater magnitude for different speaker compared to same speaker (0.47% +/- 0.08%)...
  14. ncbi request reprint Episodic memory impairment in patients with Alzheimer's disease is correlated with entorhinal cortex atrophy. A voxel-based morphometry study
    M Di Paola
    IRCCS Fondazione Santa Lucia, Via Ardeatina 306, 00179 Rome, Italy
    J Neurol 254:774-81. 2007
    ..Damage to the entorhinal cortex, deafferenting the hippocampus from neocortical inputs, interferes with episodic memory consolidation in AD patients...