Some is not enough: Quantifier comprehension in corticobasal syndrome and behavioral variant frontotemporal dementia

► This report assesses the cognitive and neural basis for a common element of our vocabulary-quantifiers. ► Cognitive components contributing to quantifier comprehension are thought to include knowledge of quantity, a simple form of perceptual logic, and executive resources such as working memory and strategic decision-making. ► A large-scale frontal-parietal neural network is thought to support quantifier comprehension. ► This study demonstrates selective impairment of the cognitive components implicated in quantifier comprehension in patients with focal neurodegenerative disease that compromises frontal and parietal brain regions.