Edson Amaro

Summary

Country: Brazil

Publications

  1. pmc Decision theory applied to image quality control in radiology
    Patricia S Lessa
    Instituto Israelita de Ensino e Pesquisa Albert Einstein, Sao Paulo, Brasil
    BMC Med Inform Decis Mak 8:51. 2008
  2. ncbi request reprint Study design in fMRI: basic principles
    Edson Amaro
    Neuroimaging Research Group, Institute of Psychiatry, King s College, University College, London, UK
    Brain Cogn 60:220-32. 2006
  3. ncbi request reprint An fMRI study of verbal self-monitoring: neural correlates of auditory verbal feedback
    Cynthia H Y Fu
    Institute of Psychiatry, King s College London, De Crespigny Park, London SE5 8AF, UK
    Cereb Cortex 16:969-77. 2006
  4. ncbi request reprint Neural correlates of the misattribution of speech in schizophrenia
    Paul Allen
    Division of Psychological Medicine Section of Neuroimaging, Department of Neuroimaging, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London, UK
    Br J Psychiatry 190:162-9. 2007
  5. ncbi request reprint Temporal course of auditory hallucinations
    Sukhwinder S Shergill
    Division of Psychological Medicine, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London, UK
    Br J Psychiatry 185:516-7. 2004
  6. ncbi request reprint Neural correlates of the misattribution of self-generated speech
    Paul P Allen
    Division of Psychological Medicine Section of Neuroimaging, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London, United Kingdom
    Hum Brain Mapp 26:44-53. 2005
  7. ncbi request reprint Reproducibility of human brain activity evoked by esophageal stimulation using functional magnetic resonance imaging
    Steven J Coen
    Neuroimaging Research Group, Institute of Psychiatry, King s College London, De Crespigny Park, London, UK
    Am J Physiol Gastrointest Liver Physiol 293:G188-97. 2007
  8. ncbi request reprint Acoustic noise and functional magnetic resonance imaging: current strategies and future prospects
    Edson Amaro
    Institute of Psychiatry, King s College, University College, London, UK
    J Magn Reson Imaging 16:497-510. 2002
  9. ncbi request reprint Complex slow potential generators in a simplified attention paradigm
    Luis F H Basile
    Department of Psychiatry, Faculty of Medicine, University of Sao Paulo, Brazil
    Int J Psychophysiol 61:149-57. 2006
  10. ncbi request reprint Bilateral activation of the prefrontal cortex after strategic semantic cognitive training
    Eliane C Miotto
    Department of Neurology, Hospital das Clinicas, University of Sao Paulo, Sao Paulo, Brazil
    Hum Brain Mapp 27:288-95. 2006

Collaborators

Detail Information

Publications29

  1. pmc Decision theory applied to image quality control in radiology
    Patricia S Lessa
    Instituto Israelita de Ensino e Pesquisa Albert Einstein, Sao Paulo, Brasil
    BMC Med Inform Decis Mak 8:51. 2008
    ..The main problem addressed in the framework of decision theory is to accept or reject a film lot of a radiology service. The probability of each decision of a determined set of variables was obtained from the selected films...
  2. ncbi request reprint Study design in fMRI: basic principles
    Edson Amaro
    Neuroimaging Research Group, Institute of Psychiatry, King s College, University College, London, UK
    Brain Cogn 60:220-32. 2006
    ..We also discuss methods to deal with cases where scanning parameters become the limiting factor (parallel acquisitions, variable jittered designs, scanner acoustic noise strategies)...
  3. ncbi request reprint An fMRI study of verbal self-monitoring: neural correlates of auditory verbal feedback
    Cynthia H Y Fu
    Institute of Psychiatry, King s College London, De Crespigny Park, London SE5 8AF, UK
    Cereb Cortex 16:969-77. 2006
    ..These findings support the self-monitoring model as mismatches between expected and actual auditory feedback were associated with greater temporal activation...
  4. ncbi request reprint Neural correlates of the misattribution of speech in schizophrenia
    Paul Allen
    Division of Psychological Medicine Section of Neuroimaging, Department of Neuroimaging, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London, UK
    Br J Psychiatry 190:162-9. 2007
    ..The neurocognitive basis of auditory verbal hallucinations is unclear...
  5. ncbi request reprint Temporal course of auditory hallucinations
    Sukhwinder S Shergill
    Division of Psychological Medicine, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London, UK
    Br J Psychiatry 185:516-7. 2004
    ..This supports the hypothesis that during hallucinations activation in cortical regions mediating the generation of inner speech may precede the engagement of areas implicated in the perception of auditory verbal material...
  6. ncbi request reprint Neural correlates of the misattribution of self-generated speech
    Paul P Allen
    Division of Psychological Medicine Section of Neuroimaging, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London, United Kingdom
    Hum Brain Mapp 26:44-53. 2005
    ..The degree to which different areas within this network are engaged varies with the source and acoustic quality of the speech. Accurate identification of one's own speech appears to depend on cingulate and prefrontal activity...
  7. ncbi request reprint Reproducibility of human brain activity evoked by esophageal stimulation using functional magnetic resonance imaging
    Steven J Coen
    Neuroimaging Research Group, Institute of Psychiatry, King s College London, De Crespigny Park, London, UK
    Am J Physiol Gastrointest Liver Physiol 293:G188-97. 2007
    ..These findings indicate that for brain imaging studies that require serial scanning, development of experimental paradigms that control for the effect of habituation is necessary...
  8. ncbi request reprint Acoustic noise and functional magnetic resonance imaging: current strategies and future prospects
    Edson Amaro
    Institute of Psychiatry, King s College, University College, London, UK
    J Magn Reson Imaging 16:497-510. 2002
    ..We also provide new data, using a silent event-related (SER) design, which demonstrate higher blood oxygen level-dependent (BOLD) response to a simple auditory cue when compared to a conventional image acquisition...
  9. ncbi request reprint Complex slow potential generators in a simplified attention paradigm
    Luis F H Basile
    Department of Psychiatry, Faculty of Medicine, University of Sao Paulo, Brazil
    Int J Psychophysiol 61:149-57. 2006
    ..We discuss the fact that group averaging may de-emphasize weakly but consistently active areas, and emphasize strongly but inconsistently active ones...
  10. ncbi request reprint Bilateral activation of the prefrontal cortex after strategic semantic cognitive training
    Eliane C Miotto
    Department of Neurology, Hospital das Clinicas, University of Sao Paulo, Sao Paulo, Brazil
    Hum Brain Mapp 27:288-95. 2006
    ..The functional adaptations observed here may also shed light on some of the processes underlying recovery with cognitive rehabilitation in patient populations with brain injury...
  11. ncbi request reprint rTMS treatment for depression in Parkinson's disease increases BOLD responses in the left prefrontal cortex
    Ellison Fernando Cardoso
    NIF, LIM 44, Department of Radiology, University of Sao Paulo, Sao Paulo, Brazil
    Int J Neuropsychopharmacol 11:173-83. 2008
    ..Our findings show that antidepressant effects of rTMS and fluoxetine in PD are associated with changes in different areas of the depression-related neural network...
  12. doi request reprint Abnormal visual activation in Parkinson's disease patients
    Ellison Fernando Cardoso
    NIF, LIM 44, Department of Radiology, University of Sao Paulo, Sao Paulo, Brazil
    Mov Disord 25:1590-6. 2010
    ..Further studies are necessary to evaluate the contribution of these abnormalities to the development visual symptoms in PD...
  13. doi request reprint Depression in Parkinson's disease: convergence from voxel-based morphometry and functional magnetic resonance imaging in the limbic thalamus
    Ellison Fernando Cardoso
    NIF, LIM 44, Department of Radiology, University of Sao Paulo, Sao Paulo, Brazil
    Neuroimage 47:467-72. 2009
    ..In addition this data supports the link between neurodegenerative alterations and mood regulation...
  14. ncbi request reprint Multisite fMRI reproducibility of a motor task using identical MR systems
    Sergi G Costafreda
    Brain Image Analysis Unit, Institute of Psychiatry, King s College London, UK
    J Magn Reson Imaging 26:1122-6. 2007
    ..To estimate between-scanner functional MRI (fMRI) reproducibility in a multisite study...
  15. ncbi request reprint Brain response to visceral aversive conditioning: a functional magnetic resonance imaging study
    Lidia Yaguez
    Department of Psychology, Institute of Psychiatry, King s College, London, United Kingdom
    Gastroenterology 128:1819-29. 2005
    ..We used functional magnetic resonance imaging of the human brain to study the neuroanatomic network involved in aversive conditioning of visceral pain and, thus, anticipation...
  16. ncbi request reprint Modulation of activity in temporal cortex during generation of inner speech
    Sukhwinder S Shergill
    Institute of Psychiatry, GKT School of Medicine and Dentistry, De Crespigny Park, London, United Kingdom
    Hum Brain Mapp 16:219-27. 2002
    ..Furthermore, this may provide support for the existence of feed forward models, which suggest that activity in regions responsible for verbal perception is modulated by activity in areas that generate inner speech...
  17. ncbi request reprint The effect of negative emotional context on neural and behavioural responses to oesophageal stimulation
    Mary L Phillips
    Division of Psychological Medicine, Guy s, St Thomas and King s College School of Clinical Medicine and Institute of Psychiatry, London, UK
    Brain 126:669-84. 2003
    ....
  18. ncbi request reprint Misattribution of speech and impaired connectivity in patients with auditory verbal hallucinations
    Andrea Mechelli
    Division of Psychological Medicine, Section of Neuroimaging, King s College London, London, SE5 8AF, United Kingdom
    Hum Brain Mapp 28:1213-22. 2007
    ..Although this finding is based on external rather than internal speech, the same mechanism may contribute to the faulty appraisal of inner speech that putatively underlies AVH...
  19. ncbi request reprint DWT-CEM: an algorithm for scale-temporal clustering in fMRI
    Joao Ricardo Sato
    Institute of Mathematics and Statistics, University of Sao Paulo, Rua do Matao, 1010, Cidade Universitria, CEP 05508 090, Sao Paulo, S P, Brazil
    Biol Cybern 97:33-45. 2007
    ..We also provide examples of the technique applied to simulated and real fMRI datasets...
  20. doi request reprint Preliminary functional magnetic resonance imaging Stroop task results before and after a Zen meditation retreat
    Elisa Harumi Kozasa
    Psychiatry Clin Neurosci 62:366. 2008
  21. doi request reprint The impact of functional connectivity changes on support vector machines mapping of fMRI data
    Joao Ricardo Sato
    Department of Statistics, Institute of Mathematics and Statistics, University of Sao Paulo, Brazil
    J Neurosci Methods 172:94-104. 2008
    ..In the application to a visual working memory fMRI data, we demonstrated that the interaction among brain regions play a role in SDM's power to detect discriminative voxels...
  22. ncbi request reprint Grey matter abnormalities in Brazilians with first-episode psychosis
    Maristela S Schaufelberger
    Departamento de Psiquiatria, Faculdade de Medicina, Universidade de Sao Paulo, Rua Ovídio Pires Campos, S N, CEP 05403 903, Sao Paulo, SP Brazil
    Br J Psychiatry Suppl 51:s117-22. 2007
    ..In low- and middle-income countries people with schizophrenia are reported to experience better outcomes than those in high-income countries...
  23. ncbi request reprint [Neuroimaging of the dopamine transporter in Parkinsons disease: first study using [99mTc]-TRODAT-1 and SPECT in Brazil]
    Ming Chi Shih
    Laboratório Interdiciplinar de Neuroimagem e Cognição, Universidade Federal de Sao Paulo, and Departamento de Imagem, Hospital Israelita Albert Einstein, Sao Paulo, SP, Brazil
    Arq Neuropsiquiatr 64:628-34. 2006
    ..Dopamine transporter (DAT) neuroimaging radiotracers were developed to estimate dopamine neuronal loss in vivo in Parkinsons disease (PD)...
  24. ncbi request reprint Neural correlates of anxiety associated with obsessive-compulsive symptom dimensions in normal volunteers
    David Mataix-Cols
    Division of Psychological Medicine, GKT School of Medicine and Institute of Psychiatry, London, United Kingdom
    Biol Psychiatry 53:482-93. 2003
    ..The neural correlates of anxiety associated with obsessive-compulsive symptomlike provocation in normal volunteers are unknown...
  25. ncbi request reprint Regional gray matter abnormalities in obsessive-compulsive disorder: a voxel-based morphometry study
    Antonio A Valente
    Department of Psychiatry, Faculty of Medicine, University of Sao Paulo, Brazil
    Biol Psychiatry 58:479-87. 2005
    ..This might be partly related to their use of a regions-of-interest approach. We assessed gray matter volumes in 19 OCD subjects and 15 healthy volunteers, using voxel-based morphometry (VBM)...
  26. ncbi request reprint Computerized videodefecography versus defecography: do we need radiographs?
    Carlos Walter Sobrado
    Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
    Sao Paulo Med J 123:105-7. 2005
    ..The objective was thus to compare measurements obtained via computerized videodefecography with conventional measurements and to discuss the advantages of the new method...
  27. ncbi request reprint Frontal and anterior cingulate activation during overt verbal fluency in patients with first episode psychosis
    Maristela Schaufelberger
    Department of Psychiatry, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
    Rev Bras Psiquiatr 27:228-32. 2005
    ..We assessed the functioning in these brain regions during phonological verbal fluency in subjects with recent-onset functional psychoses, using functional magnetic resonance imaging (FMRI)...
  28. ncbi request reprint Higher nigrostriatal dopamine neuron loss in early than late onset Parkinson's disease?--a [99mTc]-TRODAT-1 SPECT study
    Ming Chi Shih
    Laboratório Interdiciplinar de Neuroimagem e Cognição LiNC, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
    Mov Disord 22:863-6. 2007
    ..29 +/- 0.12, BP = 0.44 +/- 0.12, P < 0.02) with similar PD severity. These results suggest that EOPD patients have greater dopamine density loss than LOPD patients without motor-symptom worsening...
  29. ncbi request reprint Performing functional magnetic resonance imaging in patients with Parkinson's disease treated with deep brain stimulation
    Paula R Arantes
    Department of Radiology, University of Sao Paulo Medical School, Sao Paulo, Brazil
    Mov Disord 21:1154-62. 2006
    ..The standard DBS surgical procedure has to be slightly modified in order to reduce image artifacts. The event-related design provided increased power to detect sensorimotor cortex and basal ganglia activation...