Shape facilitates number: brain potentials and microstates reveal the interplay between shape and numerosity in human vision.

ABSTRACT: Recognition of simple shapes and numerosity estimation for small quantities are often studied independently of each other, but we know that these processes are both rapid and accurate, suggesting that they may be mediated by common neural mechanisms. Here we address this issue by examining how spatial configuration, shape complexity, and luminance polarity of elements affect numerosity estimation. We directly compared the Event Related Potential (ERP) time-course for numerosity estimation under shape and random configurations and found a larger N2 component for shape over lateral-occipital electrodes (250-400 ms), which also increased with higher numbers. We identified a Left Mid Frontal (LMF; 400-650 ms) component over left-lateralised medial frontal sites that specifically separated low

SUBMITTER: Gheorghiu E 

PROVIDER: S-EPMC7381628 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature