1,721,092 research outputs found
On the dependency of division on multiplication: Selective loss for conceptual knowledge of multiplication
No full textNumber line estimation and complex mental calculation: Is there a shared cognitive process driving the two tasks?
Full text linkIt is widely accepted that different number-related tasks, including solving simple addition and subtraction, may induce attentional shifts on the so-called mental number line, which represents larger numbers on the right and smaller numbers on the left. Recently, it has been shown that different number-related tasks also employ spatial attention shifts along with general cognitive processes. Here we investigated for the first time whether number line estimation and complex mental arithmetic recruit a common mechanism in healthy adults. Participants’ performance in two-digit mental additions and subtractions using visual stimuli was compared with their performance in a mental bisection task using auditory numerical intervals. Results showed significant correlations between participants’ performance in number line bisection and that in two-digit mental arithmetic operations, especially in additions, providing a first proof of a shared cognitive mechanism (or multiple shared cognitive mechanisms) between auditory number bisection and complex mental calculation
The Neuropsychology of Compound Words
No full textThis chapter begins by pointing out the fact that neuropsychological evidence can be more revealing of language representation and processing because the effects obtained from the study of brain-damaged populations are often of a much greater magnitude. It reviews the state of the art in the neuropsychology of compound processing, and claims that this evidence, taken together with current evidence from the psycholinguistic literature, points to the functional independence of different types of lexical knowledge and that all compound processing involves morphological composition and decomposition. Evidence from Italian also points to the independence and dissociability of mechanisms of gender assignment. The chapter cites neuropsychological evidence that is consistent with the view that both compound constituents as well as whole-word representations are routinely and automatically activated in compound processing
La riabilitazione dei deficit morfosintattici
No full textThis chapter presents an overview of treatment approaches to acquired deficits in the representation and processing of morphosyntax. It describes different aphasia syndromes, it provides an overview of current psycholinguistic and neurolinguistic models of comprehension and production, and it describes evidence-based treatment approaches aimed at treating sentence level impairments in comprehension and production
La riabilitazione dei deficit morfosintattici
No full textThis chapter presents an overview of treatment approaches to acquired deficits in the representation and processing of morphosyntax. It describes different aphasia syndromes, it provides an overview of current psycholinguistic and neurolinguistic models of comprehension and production, and it describes evidence-based treatment approaches aimed at treating sentence level impairments in comprehension and production
Conference report : First European Workshop on Cognitive Neuropsychology An Interdisciplinary ApproaCH
No full text
Brain laterality of numbers and calculation: Complex networks and their development
No full text: This chapter reviews notions about the lateralization of numbers and calculation in the brain, including its developmental pattern. Such notions have changed dramatically in recent decades. What was once considered a function almost exclusively located in the left hemisphere has been found to be sustained by complex brain networks encompassing both hemispheres. Depending on the specific task, however, each hemisphere has its own role. Much of this progress was determined by the convergency of investigations conducted with different methods. Contrary to traditional wisdom, the right hemisphere is not involved in arithmetic just as far as generic spatial aspects are concerned. Very specific arithmetic functions like remembering the spatial templates for complex operations, or processing of zero in complex numbers, are indeed sustained in specific right-sided areas. The system used in the typical adult appears to be the result of a complex pattern of development. The numerical brain clearly evolved from less mature to more advanced brain networks because of growth and education. Children seem to be equipped with the ability to represent the number nonverbally from a very early age. The bilateral processing of number-related tasks is however a late acquisition
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