Matteo Toscani

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Alpha waves are traditionally considered a passive consequence of the lack of stimulation of sensory areas. However, recent results have challenged this view by showing a modulation of alpha activity in cortical areas representing unattended information during active tasks. These data have led us to think that alpha waves would support a 'gating function'(More)
There has been an intense discussion among the public about the colour of a dress, shown in a picture posted originally on Tumblr (; accessed on 10:56 am GMT on Tue 24 Mar 2015). Some people argue that they see a white dress with golden lace, while others describe the(More)
The variable resolution and limited processing capacity of the human visual system requires us to sample the world with eye movements and attentive processes. Here we show that where observers look can strongly modulate their reports of simple surface attributes, such as lightness. When observers matched the color of natural objects they based their(More)
In four experiments we investigated the perception of numerosity in the peripheral visual field. We found that the perceived numerosity of a peripheral cloud of dots was judged to be inferior to the one of a central cloud of dots, particularly when the dots were highly clustered. Blurring the stimuli accordingly to peripheral spatial frequency sensitivity(More)
There exist large interindividual differences in the amount of chromatic induction [Vis. Res. 49, 2261 (2009)]. One possible reason for these differences between subjects could be differences in subjects' eye movements. In experiment 1, subjects either had to look exclusively at the background or at the adjustable disk while they set the disk to a neutral(More)
The anchoring theory of lightness perception proposes that the perception of white is linked to the brightest surface in a scene. A lot of evidence for some form of anchoring has been amassed, but mainly under photopic illumination conditions. There is hardly any research on lightness perception under scotopic conditions, when only rod photoreceptors are(More)
It is currently debated whether the perception of gloss is linked to the statistical parameters of the retinal image. In particular, it has been suggested that gloss is highly correlated with the skewness of the luminance histogram. However, other psychophysical work with artificial stimuli has shown that skewness alone is not enough to induce the(More)
Lightness of a surface depends on luminance sampled trough fixations (Toscani et al.,2013). This information changes when the surface moves across a light field and so do lightness matches (Zdravkovic, 2008). We studied luminance integration over time and space in a lightness matching task. A pendulum was presented in a virtual scene with clearly visible(More)
When judging the lightness of objects, the visual system has to take into account many factors such as shading, scene geometry, occlusions or transparency. The problem then is to estimate global lightness based on a number of local samples that differ in luminance. Here, we show that eye fixations play a prominent role in this selection process. We explored(More)
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