New publication in Cortex by Ada Tsouli on the interaction between Numerosity and Time

It has been proposed that number and time processing develop their specialization from a common cortical system. We investigated the potential interaction of numerical and temporal information using cross-adaptation between numerosity and duration. Participants adapted to visual numerosity or visual duration and then performed a numerosity or duration discrimination task. We found that numerosity adaptation altered numerosity perception, and duration adaptation altered duration perception. In the cross-adaptation conditions, duration adaptation affected numerosity perception, whereas numerosity adaptation did not seem to affect duration perception. We suggest that although unbalanced, there is indeed a common processing mechanism dedicated to numerosity and time perception.

 

Tsouli, A., Dumoulin, S. O., te Pas, S. F., & van der Smagt, M. J. (in press). Adaptation reveals unbalanced interaction between numerosity and time. Cortex, https://doi.org/10.1016/j.cortex.2018.02.013

New publication by Sjoerd Stuit in Journal of Vision

Binocular rivalry refers to alternations of perception when incompatible images are presented to the two eyes. While the percept is most often of a single monocular image, suggesting monocular spatial integration, perception can also resemble a patchwork of parts of both eyes’ images, suggesting spatial integration at a higher level of processing. Here we investigated the spatial profiles of integration during binocular rivalry to differentiate higher- from lower-level influences on spatial integration during rivalry. Our results suggest that image-based integration, typically referred to as higher-level, is subject to similar spatial constraints as monocular, eye-based integration, suggesting both rely on similarly sized receptive fields and thus levels of processing. Read the full, open access, article here.