Petroc Sumner

Summary

Affiliation: Cardiff University
Country: UK

Publications

  1. pmc Negative and positive masked-priming - implications for motor inhibition
    Petroc Sumner
    Cardiff University, Cardiff, UK
    Adv Cogn Psychol 3:317-26. 2007
  2. doi request reprint At the edge of consciousness: automatic motor activation and voluntary control
    Petroc Sumner
    School of Psychology, Cardiff University, Cardiff, UK
    Neuroscientist 14:474-86. 2008
  3. ncbi request reprint Combined orientation and colour information in human V1 for both L-M and S-cone chromatic axes
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK
    Neuroimage 39:814-24. 2008
  4. pmc Human medial frontal cortex mediates unconscious inhibition of voluntary action
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK
    Neuron 54:697-711. 2007
  5. pmc Attentional modulation of sensorimotor processes in the absence of perceptual awareness
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, United Kingdom
    Proc Natl Acad Sci U S A 103:10520-5. 2006
  6. ncbi request reprint Task switching: the effect of task recency with dual- and single-affordance stimuli
    Petroc Sumner
    Imperial College London, London, UK
    Q J Exp Psychol (Hove) 59:1255-76. 2006
  7. doi request reprint Oscillations in motor priming: positive rebound follows the inhibitory phase in the masked prime paradigm
    Petroc Sumner
    School of Psychology, Cardiff University, Cardiff, United Kingdom
    J Mot Behav 40:484-9. 2008
  8. doi request reprint More GABA, less distraction: a neurochemical predictor of motor decision speed
    Petroc Sumner
    Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, UK
    Nat Neurosci 13:825-7. 2010
  9. ncbi request reprint Mask-induced priming and the negative compatibility effect
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff, UK
    Exp Psychol 55:133-41. 2008
  10. pmc Dorsolateral prefrontal γ-aminobutyric acid in men predicts individual differences in rash impulsivity
    Frederic Boy
    Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, United Kingdom
    Biol Psychiatry 70:866-72. 2011

Detail Information

Publications34

  1. pmc Negative and positive masked-priming - implications for motor inhibition
    Petroc Sumner
    Cardiff University, Cardiff, UK
    Adv Cogn Psychol 3:317-26. 2007
    ..Lastly, I briefly consider why NCEs have not been reported in other priming paradigms, and what the neural substrate for any automatic motor inhibition might be...
  2. doi request reprint At the edge of consciousness: automatic motor activation and voluntary control
    Petroc Sumner
    School of Psychology, Cardiff University, Cardiff, UK
    Neuroscientist 14:474-86. 2008
    ..Last, they review evidence that some control may actually be achieved by automatically triggered inhibition as well as modulation of unconscious processes by attention and task goals...
  3. ncbi request reprint Combined orientation and colour information in human V1 for both L-M and S-cone chromatic axes
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK
    Neuroimage 39:814-24. 2008
    ..These results imply that a proportion of cells throughout human visual cortex show joint sensitivity to both colour and orientation. We discuss also the potential role of feedback to V1 from higher visual areas...
  4. pmc Human medial frontal cortex mediates unconscious inhibition of voluntary action
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK
    Neuron 54:697-711. 2007
    ..These findings imply that the SEF and SMA mediate automatic effector-specific suppression of motor plans. This automatic mechanism may contribute to the participation of these areas in the voluntary control of action...
  5. pmc Attentional modulation of sensorimotor processes in the absence of perceptual awareness
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, United Kingdom
    Proc Natl Acad Sci U S A 103:10520-5. 2006
    ..Therefore, in addition to regulating what we perceive, attention seems to influence our behavior through sensorimotor processes that are not involved in conscious awareness...
  6. ncbi request reprint Task switching: the effect of task recency with dual- and single-affordance stimuli
    Petroc Sumner
    Imperial College London, London, UK
    Q J Exp Psychol (Hove) 59:1255-76. 2006
    ..Thus control bias must act directly on switch performance, rather than only through its influence on relative task-set activation...
  7. doi request reprint Oscillations in motor priming: positive rebound follows the inhibitory phase in the masked prime paradigm
    Petroc Sumner
    School of Psychology, Cardiff University, Cardiff, United Kingdom
    J Mot Behav 40:484-9. 2008
    ....
  8. doi request reprint More GABA, less distraction: a neurochemical predictor of motor decision speed
    Petroc Sumner
    Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, UK
    Nat Neurosci 13:825-7. 2010
    ....
  9. ncbi request reprint Mask-induced priming and the negative compatibility effect
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff, UK
    Exp Psychol 55:133-41. 2008
    ..Thus mask composition can contribute to NCEs, but when random line masks are employed, the major source of the NCE seems to be motor-inhibition...
  10. pmc Dorsolateral prefrontal γ-aminobutyric acid in men predicts individual differences in rash impulsivity
    Frederic Boy
    Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, United Kingdom
    Biol Psychiatry 70:866-72. 2011
    ..Urgency is particularly associated with clinical populations and problematic disinhibited behavior...
  11. doi request reprint Supplementary motor area activations in unconscious inhibition of voluntary action
    Frederic Boy
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff, CF10 3AT, UK
    Exp Brain Res 206:441-8. 2010
    ..There was also no modulation in the hand motor cortex (HMC). These findings imply that the SMA is involved in automatic suppression of manual motor plans...
  12. ncbi request reprint Subtraction artifacts and frequency (mis-)alignment in J-difference GABA editing
    C John Evans
    CUBRIC, School of Psychology, Cardiff University, Park Place, Cardiff, United Kingdom
    J Magn Reson Imaging 38:970-5. 2013
    ....
  13. doi request reprint Sensory sluggishness dissociates saccadic, manual, and perceptual responses: an S-cone study
    Aline Bompas
    School of Psychology, Cardiff University, Cardiff, Wales, UK
    J Vis 8:10.1-13. 2008
    ..Our results show no evidence of perceived time discrepancy between the two signals, which may imply that perceptual judgments utilize different signals from either manual or saccadic responses...
  14. ncbi request reprint Oculomotor distraction by signals invisible to the retinotectal and magnocellular pathways
    Aline Bompas
    School of Psychology, Cardiff University, Cardiff, Wales, United Kingdom
    J Neurophysiol 102:2387-95. 2009
    ..We conclude that stimulus-driven oculomotor interference does not rely on the retinotectal pathway, or indeed the magnocellular pathway, which is also blind to our S-cone stimuli...
  15. pmc Individual differences in subconscious motor control predicted by GABA concentration in SMA
    Frederic Boy
    Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, UK
    Curr Biol 20:1779-85. 2010
    ..These findings suggest that, across individuals, the responsiveness of subconscious motor mechanisms is related to GABA concentration in the SMA...
  16. ncbi request reprint Which visual pathways cause fixation-related inhibition?
    Petroc Sumner
    Dept of Visual Neuroscience Room 10L15a Division of Neuroscience, Faculty of Medicine, Imperial College London, St Dunstan s Road, London W6 8RP, UK
    J Neurophysiol 95:1527-36. 2006
    ..We discuss the implications that there may be both cortical and collicular mechanisms...
  17. ncbi request reprint Distinct cortical and collicular mechanisms of inhibition of return revealed with S cone stimuli
    Petroc Sumner
    Department of Visual Neuroscience, Division of Neuroscience, Faculty of Medicine, Imperial College London, St Dunstan s Road, London W6 8RP, UK
    Curr Biol 14:2259-63. 2004
    ..These findings represent a clear dissociation between visual orienting of attention and gaze...
  18. doi request reprint Temporal dynamics of saccadic distraction
    Aline Bompas
    School of Psychology, Cardiff University, CF103AT, Cardiff, UK
    J Vis 9:17.1-14. 2009
    ..Lastly, the framework predicts that the optimal delay for the latency distractor effect is different from that maximizing error rate, and our data confirms this...
  19. pmc Naso-temporal asymmetry for signals invisible to the retinotectal pathway
    Aline Bompas
    School of Psychology, Cardiff University, Cardiff, United Kingdom
    J Neurophysiol 100:412-21. 2008
    ..Furthermore, we found no asymmetries in latency, suggesting that the NTA in saccade choice does not originate simply from a bottom-up asymmetry in any low level visual pathways...
  20. pmc Tight coupling between positive and reversed priming in the masked prime paradigm
    Frederic Boy
    School of Psychology, Cardiff University, Cardiff, Wales
    J Exp Psychol Hum Percept Perform 36:892-905. 2010
    ....
  21. pmc Exaggerated object affordance and absent automatic inhibition in alien hand syndrome
    Jennifer McBride
    Institute of Cognitive Neuroscience, University College London, Alexandra House, London, UK
    Cortex 49:2040-54. 2013
    ..Taken together, these findings suggest that grasping behaviours in AHS may result from exaggerated object affordance effects, which might potentially arise from disrupted inhibition of automatically evoked responses. ..
  22. doi request reprint Perceptual strength is different from sensorimotor strength: evidence from the centre-periphery asymmetry in masked priming
    Ursula Budnik
    School of Psychology, Cardiff University, Cardiff, UK
    Q J Exp Psychol (Hove) 66:15-22. 2013
    ....
  23. pmc Conflict in object affordance revealed by grip force
    Jennifer McBride
    Institute of Cognitive Neuroscience and Institute of Neurology, University College London, London, UK
    Q J Exp Psychol (Hove) 65:13-24. 2012
    ..Recording continuous grip force, as here, provides a sensitive way to measure coactivated responses in affordance tasks...
  24. doi request reprint Saccadic inhibition reveals the timing of automatic and voluntary signals in the human brain
    Aline Bompas
    Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, CF10 3AT, Cardiff, United Kingdom
    J Neurosci 31:12501-12. 2011
    ..Overall, we provide a way forward for applying precise neurophysiological models of saccade planning in humans at the individual level...
  25. pmc Unconscious inhibition separates two forms of cognitive control
    Frederic Boy
    School of Psychology, Cardiff University, Cardiff CF10 3AT, United Kingdom
    Proc Natl Acad Sci U S A 107:11134-9. 2010
    ....
  26. pmc Enhanced Awareness Followed Reversible Inhibition of Human Visual Cortex: A Combined TMS, MRS and MEG Study
    Christopher P G Allen
    Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, Wales, United Kingdom
    PLoS ONE 9:e100350. 2014
    ..We speculate that gating-by-inhibition in the visual cortex may provide a key foundation of consciousness. ..
  27. ncbi request reprint The ecology of visual pigment tuning in an Australian marsupial: the honey possum Tarsipes rostratus
    Petroc Sumner
    Department of Visual Neuroscience, Division of Neuroscience, Faculty of Medicine, Imperial College London, St Dunstan s Road, London W6 8RP, UK
    J Exp Biol 208:1803-15. 2005
    ..Our data show that a possible ecological pressure may be provided by the third task--the difficult and potentially critical discrimination of the maturity of the animal's major food supply, the flowers of Banksia attenuata...
  28. pmc The relationship between reversed masked priming and the tri-phasic pattern of the lateralised readiness potential
    Ellen Seiss
    School of Psychology, University of Surrey, Guildford, Surrey, United Kingdom
    PLoS ONE 9:e93876. 2014
    ..Additionally, we analysed sequential modulation of the NCE by previous conflicting events, even though such conflict is subliminal. In accordance with previous literature, this modulation is small but significant. ..
  29. pmc Spotting fruit versus picking fruit as the selective advantage of human colour vision
    Aline Bompas
    School of Psychology, Cardiff University, Cardiff CF10 3AT, Wales, United Kingdom E mail
    Iperception 4:84-94. 2013
    ..We infer that in the evolution of human colour vision, spotting fruit from a distance was a more important selective advantage than picking fruit at arms' reach...
  30. doi request reprint Human intraparietal sulcus (IPS) and competition between exogenous and endogenous saccade plans
    Elaine J Anderson
    Institute of Cognitive Neuroscience, Alexandra House, 17 Queen Square, London WC1N 3AR, UK
    Neuroimage 40:838-51. 2008
    ..Furthermore, signals recorded from the superior colliculus showed the reverse pattern of responses, consistent with a direct inhibitory influence of IPS on SC...
  31. ncbi request reprint Language switching and the effects of orthographic specificity and response repetition
    Eleni Orfanidou
    MRC Cognition and Brain Sciences Unit, Cambridge, England
    Mem Cognit 33:355-69. 2005
    ....
  32. ncbi request reprint Task-set reconfiguration with predictable and unpredictable task switches
    Stephen Monsell
    University of Cambridge, Cambridge, England
    Mem Cognit 31:327-42. 2003
    ..Switch costs did not increase with run length, suggesting that retrieval of the task set last associated with the stimulus did not contribute to switch costs...
  33. ncbi request reprint Colors of primate pelage and skin: objective assessment of conspicuousness
    Petroc Sumner
    Department of Experimental Psychology, Cambridge, United Kingdom
    Am J Primatol 59:67-91. 2003
    ..In relation to this finding, we briefly review what is known of the color vision of birds that prey on primates, and assess how conspicuous the orange pelage would be to these predators...
  34. ncbi request reprint Signals invisible to the collicular and magnocellular pathways can capture visual attention
    Petroc Sumner
    Department of Experimental Psychology, Downing Street, CB2 3EB, Cambridge, United Kingdom
    Curr Biol 12:1312-6. 2002
    ..We conclude that involuntary attentional shifts do not require signals in the direct collicular pathway, or indeed the magnocellular pathway, as our S-cone stimuli were invisible to this channel also...