Research Topics
| Juha SilvantoSummaryAffiliation: Harvard University Country: USA Publications
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Detail Information
Publications
Striate cortex (V1) activity gates awareness of motionJuha Silvanto
Institute of Cognitive Neuroscience, University College London, UK
Nat Neurosci 8:143-4. 2005..From the timing and pattern of effects, we infer that back-projections from extrastriate cortex influence information content in V1, but it is V1 that determines whether that information reaches awareness...- Making the blindsighted seeJuha Silvanto
Institute of Cognitive Neuroscience and Department of Psychology, University College London, Alexandra House, 17 Queen Square, London WC1N 3AR, United Kingdom
Neuropsychologia 45:3346-50. 2007.... 
Testing the validity of the TMS state-dependency approach: targeting functionally distinct motion-selective neural populations in visual areas V1/V2 and V5/MT+Juha Silvanto
Department of Behavioral Neurology, Harvard Medical School, Boston, MA, USA
Neuroimage 40:1841-8. 2008..That phosphenes induced from the V5/MT+ complex can appear containing either simple or radial motion demonstrates that the state dependency of TMS can be used to target specific neural populations within the affected region...- A re-evaluation of blindsight and the role of striate cortex (V1) in visual awarenessJuha Silvanto
Department of Behavioral Neurology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA, United States
Neuropsychologia 46:2869-71. 2008 
The perceptual and functional consequences of parietal top-down modulation on the visual cortexJuha Silvanto
Institute of Cognitive Neuroscience and Department of Experimental Psychology, University College London, Alexandra House, 17 Queen Square, London, UK
Cereb Cortex 19:327-30. 2009..Our results provide a demonstration of the top-down modulation exerted by the PPC on the visual cortex and show that these effects are subject to interhemispheric competition...- Neural adaptation reveals state-dependent effects of transcranial magnetic stimulationJuha Silvanto
Institute of Cognitive Neuroscience and Department of Psychology, University College London, Alexandra House, London, UK
Eur J Neurosci 25:1874-81. 2007..These findings can explain how TMS disrupts cognitive functions and therefore have implications for all studies which use TMS to disrupt behaviour... - Neural activation state determines behavioral susceptibility to modified theta burst transcranial magnetic stimulationJuha Silvanto
Institute of Cognitive Neuroscience and Department of Psychology, University College London, Alexandra House, 17 Queen Square, London, UK
Eur J Neurosci 26:523-8. 2007..This shows that the requirements of the psychophysical task, in conjunction with the relative activity states of neuronal populations when TMS is applied, can be used to selectively interfere with overlapping neuronal populations... - New light through old windows: moving beyond the "virtual lesion" approach to transcranial magnetic stimulationJuha Silvanto
Berenson Allen Center for Noninvasive Brain Stimulation, Harvard Medical School, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, USA
Neuroimage 39:549-52. 2008.... - Baseline cortical excitability determines whether TMS disrupts or facilitates behaviorJuha Silvanto
Berenson Allen Center for Noninvasive Brain Stimulation, Harvard Medical School and Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA
J Neurophysiol 99:2725-30. 2008..Our findings provide further evidence for the view that the effects of TMS are modulated by the initial activation state of the targeted neural population... - Stimulation of the human frontal eye fields modulates sensitivity of extrastriate visual cortexJuha Silvanto
Institute of Cognitive Neuroscience and Department of Psychology, University College London, 17 Queen Square, London, WC1N 3AR, United Kingdom
J Neurophysiol 96:941-5. 2006..Thus, the sensitivity of human extrastriate cortex is modulated by activity in the FEF... - Double dissociation of V1 and V5/MT activity in visual awarenessJuha Silvanto
Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London WC1N 3AR, UK
Cereb Cortex 15:1736-41. 2005..These findings demonstrate the importance of back-projections from V5/MT to V1 in awareness of real motion stimuli... - Transcranial magnetic stimulation reveals the content of visual short-term memory in the visual cortexJuha Silvanto
Wellcome Trust Centre for Neuroimaging at UCL, 12 Queen Square, London, UK
Neuroimage 50:1683-9. 2010.... - Investigating object representations during change detection in human extrastriate cortexD Samuel Schwarzkopf
Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London, UK
Eur J Neurosci 32:1780-7. 2010..Our findings show that neuronal signals in the human LO cortex carry a sustained neural trace that is necessary for detecting the repetition of a stimulus... - Stochastic resonance effects reveal the neural mechanisms of transcranial magnetic stimulationDietrich Samuel Schwarzkopf
UCL Institute of Cognitive Neuroscience, University College London, London WC1N 3AR, United Kingdom
J Neurosci 31:3143-7. 2011..Importantly, such stochastic resonance effects may also explain why TMS parameters that under normal circumstances impair behavior can induce behavioral facilitations when the stimulated area is in an adapted or suppressed state... - Probing V5/MT excitability with transcranial magnetic stimulation following visual motion adaptation to random and coherent motionJessica Guzman-Lopez
Centre for Neurosciences, Charing Cross Campus, Imperial College, London, United Kingdom
Ann N Y Acad Sci 1233:200-7. 2011..Neuronal adaptation increases the susceptibility of the neuronal population to activation by threshold intensity TMS. Thus the process of neuronal adaption is not necessarily synonymous with a downmodulation of neuronal excitability... - Investigating visual motion perception using the transcranial magnetic stimulation-adaptation paradigmZaira Cattaneo
Department of Psychology, University of Pavia, Piazza Botta, Italy
Neuroreport 19:1423-7. 2008..This finding demonstrates, in the domain of visual motion detection, the state-dependency of TMS effects and the validity of the TMS-adaptation paradigm... - State-dependency of transcranial magnetic stimulationJuha Silvanto
Department of Psychology, University of Essex, Wivenhoe Park, Colchester, UK
Brain Topogr 21:1-10. 2008..Furthermore, we discuss how state-dependency can explain the functional mechanisms through which TMS impairs perception and behavior... - A novel approach for enhancing the functional specificity of TMS: revealing the properties of distinct neural populations within the stimulated regionJuha Silvanto
Clin Neurophysiol 119:724-6. 2008