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Kallai, Arava Y.; Schunn, Christian D.; Fiez, Julie A. – Neuropsychologia, 2012
The internal representation of numbers generated during calculation has received little attention. Much of the mathematics learning literature focuses on symbolic retrieval of math facts; in contrast, we critically test the hypothesis that internally generated numbers are represented analogically, using an approximate number system. In an fMRI…
Descriptors: Mathematics Education, Number Systems, Mental Computation, Arithmetic
Van Impe, A.; Coxon, J. P.; Goble, D. J.; Wenderoth, N.; Swinnen, S. P. – Neuropsychologia, 2011
Depending on task combination, dual-tasking can either be performed successfully or can lead to performance decrements in one or both tasks. Interference is believed to be caused by limitations in central processing, i.e. structural interference between the neural activation patterns associated with each task. In the present study, single- and…
Descriptors: Feedback (Response), Older Adults, Mental Computation, Brain
Fehr, Thorsten; Weber, Jochen; Willmes, Klaus; Herrmann, Manfred – Neuropsychologia, 2010
Prodigies are individuals with exceptional mental abilities. How is it possible that some of these people mentally calculate exponentiations with high accuracy and speed? We examined CP, a mental calculation prodigy, and a control group of 11 normal calculators for moderate mental arithmetic tasks. CP has additionally been tested for exceptionally…
Descriptors: Control Groups, Mental Computation, Short Term Memory, Brain Hemisphere Functions
Pavlova, Marina; Sokolov, Alexander N.; Krageloh-Mann, Ingeborg – Neuropsychologia, 2009
The ability for mental calculation represents a fundamental prerequisite for development of intelligence, which is predictive for educational and professional success in life. Many individuals with calculation difficulties are survivors of premature birth. The brain mechanisms of these deficits are, however, largely unknown. In this work, we…
Descriptors: Neurological Organization, Neurological Impairments, Premature Infants, Cognitive Processes