AUTHOR=Chen Qi , Verguts Tom TITLE=Spontaneous summation or numerosity-selective coding? JOURNAL=Frontiers in Human Neuroscience VOLUME=7 YEAR=2013 URL=https://www.frontiersin.org/journals/human-neuroscience/articles/10.3389/fnhum.2013.00886 DOI=10.3389/fnhum.2013.00886 ISSN=1662-5161