A right hemisphere basis for calculation in the human brain

Abstract

Ss were asked to perform calculations with two-digit numbers presented by a divided visual-field technique to either the right or left hemisphere of the brain and to match the results with further numbers, responding bimanually. There was no interhemispheric difference in response latency, but analysis of errors showed that more errors were associated with presentation to the left hemisphere for subtraction problems and for all problems taken together. This apparent right-hemisphere superiority is contrasted with traditional views. © 1972, The Psychonomic Society, Inc.. All rights reserved.