Multicultural environments require learning multiple number notations wherein some are encountered more frequently than others. This leads to differences in exposure and consequently differences in usage between notations. We find that differential notational usage imposes a significant neurocognitive load on number processing. Despite simultaneous acquisition, forty-two adult binumerate populations, familiar with two positional writing systems namely Hindu Nagari digits and Hindu Arabic digits, reported significantly lower preference and usage for Nagari as compared to Arabic. Twenty-four participants showed significantly increased reaction (...) times and reduced accuracy while performing magnitude comparison tasks in Nagari with respect to Arabic. Functional magnetic resonance imaging revealed that processing Nagari elicited significantly greater activity in number processing and attention networks. A direct subtraction of networks for Nagari and Arabic notations revealed a neural circuit comprising of bilateral intra-parietal sulcus, inferior and mid frontal gyri, fusiform gyrus and the anterior cingulate cortex (FDR p<0.005). Additionally, whole brain correlation analysis showed that activity in the left inferior parietal region was modulated by task performance in Nagari. We attribute the increased activation in Ng to increased task difficulty due to infrequent exposure and usage. Our results reiterate the role of the left intra-parietal sulcus in modulating performance in numeric tasks and highlight that of the attention network for monitoring symbolic notation mode in binumerates. (shrink)

The classic questions of philosophical aesthetics—how and why human beings find certain works of art beautiful or sublime—suffered from something of a hiatus in the twentieth century, but the study of beauty has seen a return in recent years, often calling on rapidly evolving research in cognitive science and neuroscience for assistance. Patrick Colm Hogan's Beauty and Sublimity: A Cognitive Aesthetics of Literature and the Arts is an important contribution to the burgeoning interdisciplinary field of cognitive aesthetics. The book makes (...) a brave attempt to bring together insights from neuroscience, cognitive science, and literature to explain aesthetic response and justification.Hogan's focus is on the minutiae of... (shrink)