A Simmons

Summary

Affiliation: Institute of Psychiatry
Country: UK

Publications

  1. ncbi Dynamic multi-planar EPI of the urinary bladder during voiding with simultaneous detrusor pressure measurement
    A Simmons
    Department of Clinical Neurosciences, Institute of Psychiatry, London, UK
    Magn Reson Imaging 15:295-300. 1997
  2. ncbi The effects of standardization and reference values on patient classification for spine and femur dual-energy X-ray absorptiometry
    A Simmons
    East Kent Osteoporosis Screening and Research Unit, Kent and Canterbury Hospital, UK
    Osteoporos Int 7:200-6. 1997
  3. ncbi Serial precision of metabolite peak area ratios and water referenced metabolite peak areas in proton MR spectroscopy of the human brain
    A Simmons
    Department of Clinical Neurosciences, Institute of Psychiatry, London, UK
    Magn Reson Imaging 16:319-30. 1998
  4. ncbi Application of the extremum stack to neurological MRI
    A Simmons
    Department of Clinical Neurosciences, Institute of Psychiatry, London, UK
    IEEE Trans Med Imaging 17:371-82. 1998
  5. doi Frontotemporal atrophy associated with paranoid delusions in women with Alzheimer's disease
    D Whitehead
    MRC Centre for Neurodegeneration Research, King s College London, Institute of Psychiatry, UK
    Int Psychogeriatr 24:99-107. 2012
  6. ncbi Investigation of facial recognition memory and happy and sad facial expression perception: an fMRI study
    M L Phillips
    Department of Psychological Medicine, Institute of Psychiatry, London, UK
    Psychiatry Res 83:127-38. 1998
  7. ncbi Mapping motor inhibition: conjunctive brain activations across different versions of go/no-go and stop tasks
    K Rubia
    Institute of Psychiatry, King s College, London, UK
    Neuroimage 13:250-61. 2001
  8. doi Effects of estrogen therapy on age-related differences in gray matter concentration
    D Robertson
    Department of Psychological Medicine, Institute of Psychiatry, King s College, London, UK
    Climacteric 12:301-9. 2009
  9. ncbi The functional neuroanatomy of implicit-motion perception or representational momentum
    C Senior
    Department of Psychological Medicine, Institute of Psychiatry and GKT School of Medicine, London, UK
    Curr Biol 10:16-22. 2000
  10. ncbi Attenuated frontal activation in schizophrenia may be task dependent
    V A Curtis
    Department of Psychological Medicine, Institute of Psychiatry King s College, London, UK
    Schizophr Res 37:35-44. 1999

Collaborators

Detail Information

Publications32

  1. ncbi Dynamic multi-planar EPI of the urinary bladder during voiding with simultaneous detrusor pressure measurement
    A Simmons
    Department of Clinical Neurosciences, Institute of Psychiatry, London, UK
    Magn Reson Imaging 15:295-300. 1997
    ....
  2. ncbi The effects of standardization and reference values on patient classification for spine and femur dual-energy X-ray absorptiometry
    A Simmons
    East Kent Osteoporosis Screening and Research Unit, Kent and Canterbury Hospital, UK
    Osteoporos Int 7:200-6. 1997
    ..The choice of standardization technique, however, must be addressed in light of the results presented here...
  3. ncbi Serial precision of metabolite peak area ratios and water referenced metabolite peak areas in proton MR spectroscopy of the human brain
    A Simmons
    Department of Clinical Neurosciences, Institute of Psychiatry, London, UK
    Magn Reson Imaging 16:319-30. 1998
    ..These results allow us to repudiate Marshall's assertion regarding disappointing repeatability of in vivo MRS...
  4. ncbi Application of the extremum stack to neurological MRI
    A Simmons
    Department of Clinical Neurosciences, Institute of Psychiatry, London, UK
    IEEE Trans Med Imaging 17:371-82. 1998
    ....
  5. doi Frontotemporal atrophy associated with paranoid delusions in women with Alzheimer's disease
    D Whitehead
    MRC Centre for Neurodegeneration Research, King s College London, Institute of Psychiatry, UK
    Int Psychogeriatr 24:99-107. 2012
    ..We investigated the neuroanatomical correlates of paranoid delusions in a cohort of AD patients, using magnetic resonance imaging (MRI) to measure regional volume and regional cortical thickness...
  6. ncbi Investigation of facial recognition memory and happy and sad facial expression perception: an fMRI study
    M L Phillips
    Department of Psychological Medicine, Institute of Psychiatry, London, UK
    Psychiatry Res 83:127-38. 1998
    ....
  7. ncbi Mapping motor inhibition: conjunctive brain activations across different versions of go/no-go and stop tasks
    K Rubia
    Institute of Psychiatry, King s College, London, UK
    Neuroimage 13:250-61. 2001
    ....
  8. doi Effects of estrogen therapy on age-related differences in gray matter concentration
    D Robertson
    Department of Psychological Medicine, Institute of Psychiatry, King s College, London, UK
    Climacteric 12:301-9. 2009
    ..The inconsistency in the findings of previous studies is likely to be due to a variety of methodological factors. In this study, we attempted to overcome many of these factors...
  9. ncbi The functional neuroanatomy of implicit-motion perception or representational momentum
    C Senior
    Department of Psychological Medicine, Institute of Psychiatry and GKT School of Medicine, London, UK
    Curr Biol 10:16-22. 2000
    ..We used functional magnetic resonance imaging (fMRI) to explore the neural substrate for representational momentum...
  10. ncbi Attenuated frontal activation in schizophrenia may be task dependent
    V A Curtis
    Department of Psychological Medicine, Institute of Psychiatry King s College, London, UK
    Schizophr Res 37:35-44. 1999
    ..Functional magnetic resonance imaging was used to examine the neural correlates of two linguistic tasks in schizophrenia...
  11. ncbi Generic brain activation mapping in functional magnetic resonance imaging: a nonparametric approach
    M J Brammer
    Department of Biostatistics, Institute of Psychiatry, London
    Magn Reson Imaging 15:763-70. 1997
    ....
  12. ncbi Exploring the social brain in schizophrenia: left prefrontal underactivation during mental state attribution
    T A Russell
    Institute of Psychiatry, King s College, London, UK
    Am J Psychiatry 157:2040-2. 2000
    ..The authors used functional magnetic resonance imaging (MRI) to investigate the hypothesis that patients with schizophrenia have a dysfunction in brain regions responsible for mental state attribution...
  13. ncbi Cortical activity during rotational and linear transformations
    J Barnes
    Centre for Brain and Cognitive Development, School of Psychology, Birkbeck College, University of London, Malet Street, WC1E 7HX, London, UK
    Neuropsychologia 38:1148-56. 2000
    ..The findings demonstrate the extent to which neural substrates for image transformation and perception overlap and are distinct as well as revealing functional specialisation within perception and transformation processing systems...
  14. pmc Altered patterns of cortical activation in ALS patients during attention and cognitive response inhibition tasks
    L H Goldstein
    King s College London, Department of Psychology, Institute of Psychiatry, MRC Centre for Neurodegeneration Research, PO77, De Crespigny Park, London, SE5 8AF, UK
    J Neurol 258:2186-98. 2011
    ..The current findings require further exploration in a larger study...
  15. ncbi An fMRI study of reduced left prefrontal activation in schizophrenia during normal inhibitory function
    K Rubia
    Department of Child Psychiatry, Psychological Medicine, and Neurology, Institute of Psychiatry, King s College, De Crespigny Park, SE5 8AF, London, UK
    Schizophr Res 52:47-55. 2001
    ..Despite good task performance, patients with schizophrenia thus showed abnormal neural network patterns of reduced left prefrontal activation and increased subcortical activation when challenged with motor response inhibition...
  16. doi The effects of acute fluoxetine administration on temporal discounting in youth with ADHD
    C O Carlisi
    Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King s College, London, UK
    Psychol Med 46:1197-209. 2016
    ..This study tested whether a single acute dose of the selective serotonin reuptake inhibitor (SSRI) fluoxetine up-regulates and normalizes reduced fronto-striato-limbic neurofunctional activation in ADHD during TD...
  17. doi Disorder-dissociated effects of fluoxetine on brain function of working memory in attention deficit hyperactivity disorder and autism spectrum disorder
    K Chantiluke
    Department of Child and Adolescent Psychiatry, Institute of Psychiatry, King s College London, UK
    Psychol Med 45:1195-205. 2015
    ....
  18. ncbi Quality control for functional magnetic resonance imaging using automated data analysis and Shewhart charting
    A Simmons
    Department of Clinical Neurosciences, Institute of Psychiatry, Maudsley Hospital, London, United Kingdom
    Magn Reson Med 41:1274-8. 1999
    ..The use of automated Shewhart charting is proposed to identify significant changes in each parameter over the long term. The protocol has successfully identified system faults and deteriorations undetected by conventional QC...
  19. doi Genome-wide association with MRI atrophy measures as a quantitative trait locus for Alzheimer's disease
    S J Furney
    National Institute for Health Research Biomedical Research Centre for Mental Health, Institute of Psychiatry, King s College London, London, UK
    Mol Psychiatry 16:1130-8. 2011
    ..6 × 10(-8); corrected P-value=1.7 × 10(-7)). Gene-wide scoring also highlighted PICALM as the most significant gene associated with entorhinal cortical thickness (P-value=6.7 × 10(-6))...
  20. ncbi Corpus callosum may be similar in children with ADHD and siblings of children with ADHD
    S Overmeyer
    Department of Child Psychiatry, Institute of Psychiatry, London, UK
    Dev Med Child Neurol 42:8-13. 2000
    ..Clinicians should not base their pathophysiological diagnosis of this disorder on an abnormality of callosal development...
  21. doi Drug-specific laterality effects on frontal lobe activation of atomoxetine and methylphenidate in attention deficit hyperactivity disorder boys during working memory
    A Cubillo
    Department of Child and Adolescent Psychiatry, Institute of Psychiatry, King s College London, London, UK
    Psychol Med 44:633-46. 2014
    ..This study compares the neurofunctional modulation and normalization effects of acute doses of MPH and ATX within medication-naive ADHD boys during working memory (WM)...
  22. pmc No effect of 5HTTLPR or BDNF Val66Met polymorphism on hippocampal morphology in major depression
    J Cole
    MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King s College London, London, UK
    Genes Brain Behav 10:756-64. 2011
    ..In this study, there was no evidence of a genetic effect for 5HTTLPR or BDNF Val66Met on hippocampal morphology in either healthy individuals or MDD patients despite the relatively large sample sizes and sensitive methodology...
  23. ncbi Functional anatomy of auditory verbal imagery in schizophrenic patients with auditory hallucinations
    S S Shergill
    Department of Biostatistics, Institute for Psychiatry, London, UK
    Am J Psychiatry 157:1691-3. 2000
    ..This study investigated the functional neuroanatomy of inner speech and auditory verbal imagery in schizophrenic patients predisposed to auditory hallucinations...
  24. ncbi Cortical processing of human somatic and visceral sensation
    Q Aziz
    Department of Clinical Neurosciences, Institute of Psychiatry, London SE5 8AF, United Kingdom
    J Neurosci 20:2657-63. 2000
    ..These findings suggest that cortical specialization in the sensory-discriminative, affective, and cognitive areas of the cortex accounts for the perceptual differences observed between the two sensory modalities...
  25. ncbi Towards a functional neuroanatomy of self processing: effects of faces and words
    T T Kircher
    Department of Psychological Medicine, Institute of Psychiatry and GKT School of Medicine, De Crespigny Park, SE5 8AF, London, UK
    Brain Res Cogn Brain Res 10:133-44. 2000
    ..The self-relevant stimuli engaged to a differential extent long term and working memory, semantic and emotional processes. We suggest that regions activated by these stimuli are engaged in self-processing...
  26. pmc Disorder-specific grey matter deficits in attention deficit hyperactivity disorder relative to autism spectrum disorder
    L Lim
    Department of Child and Adolescent Psychiatry, Institute of Psychiatry, King s College London, UK
    Psychol Med 45:965-76. 2015
    ..This study compared the two neurodevelopmental disorders to investigate shared and disorder-specific structural brain abnormalities...
  27. doi Apathy and cortical atrophy in Alzheimer's disease
    C Tunnard
    MRC Centre for Neurodegeneration, King s College London, Institute of Psychiatry, De Crespigny Park, UK
    Int J Geriatr Psychiatry 26:741-8. 2011
    ..The aim of the current study was to investigate structural correlates of apathy in AD using magnetic resonance imaging (MRI) regional volume and regional cortical thickness measures...
  28. doi Brain anatomy and ageing in non-demented adults with Down's syndrome: an in vivo MRI study
    F Beacher
    Institute of Psychiatry, Kings College, London SE5 8AF, UK
    Psychol Med 40:611-9. 2010
    ..People with Down's syndrome (DS) are at high risk for developing dementia in middle age. The biological basis for this is unknown. It has been proposed that non-demented adults with DS may undergo accelerated brain ageing...
  29. ncbi Effects of estrogen replacement therapy on human brain aging: an in vivo 1H MRS study
    D M Robertson
    Department of Psychological Medicine, Institute of Psychiatry, London, UK
    Neurology 57:2114-7. 2001
    ..Cho reflects increased neuronal/glial membrane turnover. Thus, ERT's "neuroprotective" effect may include modulating the effects of age on neural integrity in brain regions involved in cognitive function...
  30. ncbi Volumetric analysis reveals corticospinal tract degeneration and extramotor involvement in ALS
    C M Ellis
    Department of Neurology, Guy s, Kings and St Thomas School of Medicine and Dentistry, London, UK
    Neurology 57:1571-8. 2001
    ..Pathologic changes in the motor cortex and corticospinal tracts in ALS may be reflected by abnormal signal intensities on conventional MRI. The sensitivity of these changes in detecting underlying pathology remains unclear...
  31. doi Alterations in brain structure in adults with anorexia nervosa and the impact of illness duration
    L Fonville
    King s College London, Institute of Psychiatry, Department of Psychological Medicine, London, UK
    Psychol Med 44:1965-75. 2014
    ..Brain structure alterations have been reported in anorexia nervosa, but findings have been inconsistent. This may be due to inadequate sample size, sample heterogeneity or differences in methodology...
  32. pmc Differential corticospinal tract degeneration in homozygous 'D90A' SOD-1 ALS and sporadic ALS
    C R V Blain
    Department of Clinical Neuroscience, King s College London, Institute of Psychiatry, London, UK
    J Neurol Neurosurg Psychiatry 82:843-9. 2011
    ..The authors aimed to use diffusion tensor tractography to quantify and compare changes in the intracerebral corticospinal tracts of patients with both forms of ALS, building on previous work using whole-brain voxelwise group analysis...