S
Simo Vanni
Researcher at University of Helsinki
Publications - 77
Citations - 3038
Simo Vanni is an academic researcher from University of Helsinki. The author has contributed to research in topics: Visual cortex & Visual field. The author has an hindex of 28, co-authored 76 publications receiving 2823 citations. Previous affiliations of Simo Vanni include Australian National University & Paul Sabatier University.
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Activation of a distributed somatosensory cortical network in the human brain. A dipole modelling study of magnetic fields evoked by median nerve stimulation. Part I: Location and activation timing of SEF sources.
François Mauguière,Isabelle Merlet,Nina Forss,Simo Vanni,Veikko Jousmäki,P Adeleine,Riitta Hari +6 more
TL;DR: The observed activation timing suggests that somatosensory input from SI is processed to higher-order areas through serial feedforward projections, however the long-lasting activations of all sources and their overlap in time is also compatible with a top-down control mediated via backward projections.
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Coinciding early activation of the human primary visual cortex and anteromedial cuneus
TL;DR: Results show that visual stimuli activate two cortical areas right from the beginning of the cortical response, and suggest that the anteromedial cuneus has the temporal position needed to interact with the primary visual cortex V1 and thereby to modify information transferred via V1 to extrastriate cortices.
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Modulation of the Parieto-Occipital Alpha Rhythm during Object Detection
TL;DR: The results reinforce the idea of bidirectional interaction: information derived from visual shape can rapidly modify activity in the parieto-occipital region, and synchronized alpha oscillations may reflect attenuation of occipito-parietal information transfer and disengagement of parietal cortex from object selection.
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Spatial frequency tuning in human retinotopic visual areas
TL;DR: The progressive decline in the SF tuning from V1 to V2 and V3A is compatible with the view that these areas represent visual information at different spatial scales, and is comparable to the extent of horizontal connections within primate V1.
Journal ArticleDOI
Activation of a distributed somatosensory cortical network in the human brain: a dipole modelling study of magnetic fields evoked by median nerve stimulation. Part II: effects of stimulus rate, attention and stimulus detection
François Mauguière,Isabelle Merlet,Nina Forss,Simo Vanni,Veikko Jousmäki,P Adeleine,Riitta Hari +6 more
TL;DR: The results suggest that activation of frontal sources during mental counting could reflect a working memory process, and that of posterior parietal sources a spatial attention effect detectable only at long ISIs.