Suppression wave dynamics: Visual field anisotropies and inducer strength
Marnix Naber, Olivia Carter, Frans AJ Verstraten
Vision Research | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2009
We used binocular rivalry and generalized flash suppression to identify several new shared properties of traveling suppression waves. A strong relationship was found between suppression wave speed and induction pulse strength: increasing the contrast or dot density of the induction pulse led to an increase in wave speed. Evidence of visual field anisotropies in wave propagation speeds were also seen, with suppression waves decelerating as they travel towards the fovea. This deceleration could not be accounted for by cortical magnification in lower level brain areas, suggesting an important role for other, yet to be identified, factors.
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Awarded by NHMRC(Aust)
The research reported here was funded by the Netherlands Organisation for Scientific Research (NWO-Pionier program) to FV; and NHMRC(Aust) CJ Martin Fellowship: 368525 to OC; and the German Research Foundation (Research Training Group 885-Neuroact) to Mn.