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Wilson, Stephen M.; Galantucci, Sebastiano; Tartaglia, Maria Carmela; Gorno-Tempini, Maria Luisa – Brain and Language, 2012
Patients with primary progressive aphasia (PPA) vary considerably in terms of which brain regions are impacted, as well as in the extent to which syntactic processing is impaired. Here we review the literature on the neural basis of syntactic deficits in PPA. Structural and functional imaging studies have most consistently associated syntactic…
Descriptors: Syntax, Aphasia, Patients, Brain Hemisphere Functions
Westermann, Gert; Ruh, Nicolas – Psychological Review, 2012
We present a neural network model of learning and processing the English past tense that is based on the notion that experience-dependent cortical development is a core aspect of cognitive development. During learning the model adds and removes units and connections to develop a task-specific final architecture. The model provides an integrated…
Descriptors: Learning Problems, Semantics, Brain Hemisphere Functions, Aphasia
Bernal, Byron; Ardila, Alfredo – Brain, 2009
In aphasia literature, it has been considered that a speech repetition defect represents the main constituent of conduction aphasia. Conduction aphasia has frequently been interpreted as a language impairment due to lesions of the arcuate fasciculus (AF) that disconnect receptive language areas from expressive ones. Modern neuroradiological…
Descriptors: Brain Hemisphere Functions, Aphasia, Receptive Language, Neurological Impairments
Fazio, Patrik; Cantagallo, Anna; Craighero, Laila; D'Ausilio, Alessandro; Roy, Alice C.; Pozzo, Thierry; Calzolari, Ferdinando; Granieri, Enrico; Fadiga, Luciano – Brain, 2009
Broca's area has been considered, for over a century, as the brain centre responsible for speech production. Modern neuroimaging and neuropsychological evidence have suggested a wider functional role is played by this area. In addition to the evidence that it is involved in syntactical analysis, mathematical calculation and music processing, it…
Descriptors: Comprehension, Speech, Aphasia, Neurology
Cano, Agnes; Rapp, Brenda; Costa, Albert; Juncadella, Montserrat – Neuropsychologia, 2008
We describe the performance of an aphasic individual who showed a selective impairment affecting his comprehension of auditorily presented number words and not other word categories. His difficulty in number word comprehension was restricted to the auditory modality, given that with visual stimuli (written words, Arabic numerals and pictures) his…
Descriptors: Visual Stimuli, Semantics, Number Concepts, Auditory Stimuli
Piras, Fabrizio; Marangolo, Paola – Neuropsychologia, 2009
The high incidence of number transcoding deficits in aphasic subjects suggests there is a strong similarity between language and number domains. However, recent single case studies of subjects who showed a dissociation between word and number word transcoding led us to hypothesize that the two types of stimuli are represented independently in the…
Descriptors: Semitic Languages, Stimuli, Aphasia, Patients