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Hyde, Daniel C.; Winkler-Rhoades, Nathan; Lee, Sang-Ah; Izard, Veronique; Shapiro, Kevin A.; Spelke, Elizabeth S. – Neuropsychologia, 2011
We studied the cognitive abilities of a 13-year-old deaf child, deprived of most linguistic input from late infancy, in a battery of tests designed to reveal the nature of numerical and geometrical abilities in the absence of a full linguistic system. Tests revealed widespread proficiency in basic symbolic and non-symbolic numerical computations…
Descriptors: Spatial Ability, Nonverbal Ability, Numbers, Geometric Concepts
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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
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Teichmann, Marc; Dupoux, Emmanuel; Cesaro, Pierre; Bachoud-Levi, Anne-Catherine – Neuropsychologia, 2008
The role of sub-cortical structures such as the striatum in language remains a controversial issue. Based on linguistic claims that language processing implies both recovery of lexical information and application of combinatorial rules it has been shown that striatal damaged patients have difficulties applying conjugation rules while lexical…
Descriptors: Sentences, Language Processing, Brain, Neurological Organization
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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
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Semenza, Carlo; Bonollo, Sabrina; Polli, Roberta; Busana, Cristina; Pignatti, Riccardo; Iuculano, Teresa; Laverda, Anna Maria; Priftis, Konstantinos; Murgia, Alessandra – Neuropsychologia, 2012
Neuropsychological investigations of FMR1 premutation carriers without FXTAS present one domain resulting in contradictory findings, namely that of mathematical skills. One reason for this might be that standard clinical batteries used so far may be inadequate to uncover precise deficits within specific mathematical skills. In fact, these…
Descriptors: Genetics, Mathematics Skills, Females, Computation
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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
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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