Paul P Allen

Summary

Affiliation: King's College London
Country: UK

Publications

  1. ncbi request reprint Effect of acute tryptophan depletion on pre-frontal engagement
    Paul P Allen
    Division of Psychological Medicine P067, Institute of Psychiatry, De Crespigny Park, London, UK
    Psychopharmacology (Berl) 187:486-97. 2006
  2. ncbi request reprint The hallucinating brain: a review of structural and functional neuroimaging studies of hallucinations
    Paul Allen
    Kings College London, Department of Psychological Medicine and Psychiatry, Institute of Psychiatry, London, UK
    Neurosci Biobehav Rev 32:175-91. 2008
  3. ncbi request reprint Misattribution of external speech in patients with hallucinations and delusions
    Paul P Allen
    Section of Neuroimaging, Division of Psychological Medicine, Institute of Psychiatry, P O BOX 67, Denmark Hill, London SE5 8AF, UK
    Schizophr Res 69:277-87. 2004
  4. pmc Cingulate activity and fronto-temporal connectivity in people with prodromal signs of psychosis
    Paul Allen
    Division of Psychological Medicine, Institute of Psychiatry, King s College, De Crespigny Park 16, London, UK
    Neuroimage 49:947-55. 2010
  5. doi request reprint Fronto-temporal interactions during overt verbal initiation and suppression
    Paul Allen
    Division of Psychological Medicine and Psychiatry, Institute of Psychiatry, King s College London, London, UK
    J Cogn Neurosci 20:1656-69. 2008
  6. ncbi request reprint Inner speech models of auditory verbal hallucinations: evidence from behavioural and neuroimaging studies
    Paul Allen
    Division of Psychological Medicine and Psychiatry, Institute of Psychiatry, De Crespigny Park, Denmark Hill, King s College, London, UK
    Int Rev Psychiatry 19:407-15. 2007
  7. 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
  8. pmc Altered prefrontal and hippocampal function during verbal encoding and recognition in people with prodromal symptoms of psychosis
    Paul Allen
    Section of Neuroimaging, Division of Psychological Medicine, Institute of Psychiatry, London, UK
    Schizophr Bull 37:746-56. 2011
  9. ncbi request reprint Slow habituation of arousal associated with psychosis proneness
    Paul Allen
    Department of Psychological Medicine, Institute of Psychiatry, King s College London, UK
    Psychol Med 37:577-82. 2007
  10. ncbi request reprint Misattribution of self-generated speech in relation to hallucinatory proneness and delusional ideation in healthy volunteers
    Paul Allen
    King s College London, Department of Psychological Medicine, Institute of Psychiatry, DeCrespigny Park, London SE5 8AF, United Kingdom
    Schizophr Res 84:281-8. 2006

Detail Information

Publications24

  1. ncbi request reprint Effect of acute tryptophan depletion on pre-frontal engagement
    Paul P Allen
    Division of Psychological Medicine P067, Institute of Psychiatry, De Crespigny Park, London, UK
    Psychopharmacology (Berl) 187:486-97. 2006
    ..We tested the hypothesis that acute tryptophan depletion (ATD) would attenuate pre-frontal activation during both tasks...
  2. ncbi request reprint The hallucinating brain: a review of structural and functional neuroimaging studies of hallucinations
    Paul Allen
    Kings College London, Department of Psychological Medicine and Psychiatry, Institute of Psychiatry, London, UK
    Neurosci Biobehav Rev 32:175-91. 2008
    ..Based on the findings of these studies we tentatively propose a neurocognitive model in which both bottom-up and top-down processes interact to produce these erroneous percepts. Finally, directions for future work are discussed...
  3. ncbi request reprint Misattribution of external speech in patients with hallucinations and delusions
    Paul P Allen
    Section of Neuroimaging, Division of Psychological Medicine, Institute of Psychiatry, P O BOX 67, Denmark Hill, London SE5 8AF, UK
    Schizophr Res 69:277-87. 2004
    ..We examined whether patients with hallucinations and delusions would demonstrate an externalising bias on a task that did not involve cognitive self-monitoring...
  4. pmc Cingulate activity and fronto-temporal connectivity in people with prodromal signs of psychosis
    Paul Allen
    Division of Psychological Medicine, Institute of Psychiatry, King s College, De Crespigny Park 16, London, UK
    Neuroimage 49:947-55. 2010
    ..Although task related fronto-temporal integration in the ARMS was intact, this may depend on increased engagement of the ACC which was not observed in healthy control subjects...
  5. doi request reprint Fronto-temporal interactions during overt verbal initiation and suppression
    Paul Allen
    Division of Psychological Medicine and Psychiatry, Institute of Psychiatry, King s College London, London, UK
    J Cogn Neurosci 20:1656-69. 2008
    ....
  6. ncbi request reprint Inner speech models of auditory verbal hallucinations: evidence from behavioural and neuroimaging studies
    Paul Allen
    Division of Psychological Medicine and Psychiatry, Institute of Psychiatry, De Crespigny Park, Denmark Hill, King s College, London, UK
    Int Rev Psychiatry 19:407-15. 2007
    ..The evidence is critically discussed and directions for future investigations are suggested...
  7. 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...
  8. pmc Altered prefrontal and hippocampal function during verbal encoding and recognition in people with prodromal symptoms of psychosis
    Paul Allen
    Section of Neuroimaging, Division of Psychological Medicine, Institute of Psychiatry, London, UK
    Schizophr Bull 37:746-56. 2011
    ..These neurofunctional differences were associated with diminished recognition performance and may reflect the greatly increased risk of psychosis associated with the ARMS...
  9. ncbi request reprint Slow habituation of arousal associated with psychosis proneness
    Paul Allen
    Department of Psychological Medicine, Institute of Psychiatry, King s College London, UK
    Psychol Med 37:577-82. 2007
    ..The aim of the present study was to examine the relationship between SC orienting response and hallucination proneness, delusional ideation, anxiety and self-focused attention in non-clinical individuals...
  10. ncbi request reprint Misattribution of self-generated speech in relation to hallucinatory proneness and delusional ideation in healthy volunteers
    Paul Allen
    King s College London, Department of Psychological Medicine, Institute of Psychiatry, DeCrespigny Park, London SE5 8AF, United Kingdom
    Schizophr Res 84:281-8. 2006
    ..This suggests that the same cognitive impairments may underlie psychotic phenomena in healthy individuals as in patients with psychotic disorders, consistent with a continuum model of psychosis...
  11. 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...
  12. ncbi request reprint The prediction of hallucinatory predisposition in non-clinical individuals: examining the contribution of emotion and reasoning
    Paul Allen
    Department of Psychological Medicine, Institute of Psychiatry, King s College London, UK
    Br J Clin Psychol 44:127-32. 2005
    ..We report an investigation of the prediction of hallucinatory predisposition by emotion and associated processes (anxiety, depression, stress, self-focused attention) and reasoning (need for closure, extreme responding)...
  13. doi request reprint Distinct effects of {delta}9-tetrahydrocannabinol and cannabidiol on neural activation during emotional processing
    Paolo Fusar-Poli
    Neuroimaging Section, Division of Psychological Medicine, PO67, Institute of Psychiatry, London SE58AF, England
    Arch Gen Psychiatry 66:95-105. 2009
    ..Cannabis use can both increase and reduce anxiety in humans. The neurophysiological substrates of these effects are unknown...
  14. doi request reprint Abnormal frontostriatal interactions in people with prodromal signs of psychosis: a multimodal imaging study
    Paolo Fusar-Poli
    Psychosis Clinical Academic Group PO67, Institute of Psychiatry, De Crespigny Park, London SE58AF, England
    Arch Gen Psychiatry 67:683-91. 2010
    ..Alterations in dopaminergic neurotransmission and function of the prefrontal cortex are thought to be central to the pathophysiology of schizophrenia, but the relationship between these factors in the development of psychosis is unclear...
  15. doi request reprint Attentional modulation of external speech attribution in patients with hallucinations and delusions
    Lana Marija Ilankovic
    Department of Psychiatry, Ludwig Maximilians University, Munich, Germany
    Neuropsychologia 49:805-12. 2011
    ....
  16. pmc Opposite effects of delta-9-tetrahydrocannabinol and cannabidiol on human brain function and psychopathology
    Sagnik Bhattacharyya
    Section of Neuroimaging, Division of Psychological Medicine and Psychiatry, Institute of Psychiatry, King s College London, London, UK
    Neuropsychopharmacology 35:764-74. 2010
    ..Delta-9-THC and CBD can have opposite effects on regional brain function, which may underlie their different symptomatic and behavioral effects, and CBD's ability to block the psychotogenic effects of Delta-9-THC...
  17. doi request reprint Neural basis of Delta-9-tetrahydrocannabinol and cannabidiol: effects during response inhibition
    Stefan J Borgwardt
    Section of Neuroimaging, Institute of Psychiatry, King s College London, United Kingdom
    Biol Psychiatry 64:966-73. 2008
    ..This study examined the effect of Delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) on brain activation during a motor inhibition task...
  18. doi request reprint Modulation of mediotemporal and ventrostriatal function in humans by Delta9-tetrahydrocannabinol: a neural basis for the effects of Cannabis sativa on learning and psychosis
    Sagnik Bhattacharyya
    Section of Neuroimaging, Division of Psychological Medicine and Psychiatry, Institute of Psychiatry, King s College London, Box P067, De Crespigny Park, London SE5 8AF, England
    Arch Gen Psychiatry 66:442-51. 2009
    ..Cannabis sativa use can impair verbal learning, provoke acute psychosis, and increase the risk of schizophrenia. It is unclear where C. sativa acts in the human brain to modulate verbal learning and to induce psychotic symptoms...
  19. doi request reprint Modulation of effective connectivity during emotional processing by Delta 9-tetrahydrocannabinol and cannabidiol
    Paolo Fusar-Poli
    Neuroimaging Section, Division of Psychological Medicine, Institute of Psychiatry, King s College London, UK
    Int J Neuropsychopharmacol 13:421-32. 2010
    ..This is the first study to show that the disruption of prefrontal-subocritical connectivity by CBD may represent neurophysiological correlates of its anxiolytic properties...
  20. ncbi request reprint Impaired verbal self-monitoring in psychosis: effects of state, trait and diagnosis
    Louise C Johns
    Section of Neuroimaging, Department of Psychological Medicine, Institute of Psychiatry, De Crespigny Park, London, UK
    Psychol Med 36:465-74. 2006
    ..We used a paradigm that engages verbal self-monitoring to examine how deficits in this process are related to symptoms and diagnosis in patients with psychosis...
  21. 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...
  22. doi request reprint Neuroimaging studies of the early stages of psychosis: a critical review
    Paolo Fusar-Poli
    Section of Neuroimaging, Division of Psychological Medicine, Institute of Psychiatry, Kings College, London, UK
    Eur Psychiatry 23:237-44. 2008
    ....
  23. pmc Functional atlas of emotional faces processing: a voxel-based meta-analysis of 105 functional magnetic resonance imaging studies
    Paolo Fusar-Poli
    Fusar Poli, Carletti, Allen, McGuire Section of Neuroimaging, Department of Psychological Medicine, Institute of Psychiatry, King s College London, United Kingdom
    J Psychiatry Neurosci 34:418-32. 2009
    ..Furthermore, such emotional processes are thought to be aberrant in a range of clinical disorders, including psychosis and depression. However, the exact neurofunctional maps underlying emotional facial processing are not well defined...
  24. doi request reprint Egas Moniz (1875-1955), the father of psychosurgery
    Paolo Fusar-Poli
    Neuroimaging Section, Department of Psychological Medicine, Institute of Psychiatry, King s College London, UK
    Br J Psychiatry 193:50. 2008