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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 6 of 6 (0.025 seconds)Spelling suggestions: "subject:"[een] COGNITIVE NEUROPSYCHOLOGY"" "subject:"[enn] COGNITIVE NEUROPSYCHOLOGY""
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Word production and comprehenshion in aphasiaHirsh, Katherine Woodburn January 1991 (has links)
No description available.
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The mental representation of proper names : the evidence from selected disorders of proper name retrieval following acquired brain damageHarris, Daryl Marc January 1995 (has links)
No description available.
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[en] ONTOGENESE OF COGNITIVE FUNCTIONS: A NEUROPSYCHOLOGICAL APPROACH / [pt] ONTOGÊNESE DAS FUNÇÕES COGNITIVAS: UMA ABORDAGEM NEUROPSICOLÓGICAEMMY UEHARA PIRES 13 November 2018 (has links)
[pt] O presente estudo teve como objetivo compreender como se dá a ontogênese das funções cognitivas no período entre o nascimento até o início da adolescência. A partir da perspectiva da neurociência e neuropsicologia cognitiva, questões como as influências biológicas e ambientais, a maturação cerebral e o processo de aprendizagem, assim como as bases neuroanatômicas e circuitos neurais serão discutidas. A ênfase será dada aos marcos mais relevantes no processo típico do desenvolvimento das principais funções cognitivas tais como a sensação, a percepção, a atenção, a memória, a linguagem, as habilidades visuoconstrutivas, e as funções executivas. / [en] This study aimed to understand how the ontogeny of cognitive functions during the period from birth to early adolescence. From the perspective of neuroscience and cognitive neuropsychology, issues such as biological and environmental influences, brain maturation and learning processes, as neuroanatomical bases and neural circuits will be discussed. Emphasis will be given to the most important milestones in the typical development of the main cognitive functions such as sensation, perception, attention, memory, language, visual-constructive skills and executive functions.
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Culpabilidade, livre-arbítrio e neurodeterminismo: os reflexos jurídico penais da revolução neurocientíficaAraújo, Fábio Roque da Silva January 2014 (has links)
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FÁBIO ROQUE DA SILVA ARAÚJO.pdf: 1582509 bytes, checksum: 8e10d75edde07fae378aaeb21a8a8cd3 (MD5) / A culpabilidade, elemento constitutivo da estrutura analítica do crime, desempenha papel de fundamental importância, na imposição e delimtação da sanção penal. Fruto da construção histórica de um Direito Penal racionalizado e tributário dos direitos fundamentais, a culpabilidade assentou-se sobre o primado do livre-arbítrio, compreendido como capacidade de autodeterminação individual. As recentes descobertas da neurociência cognitiva, acabam por propugnar a existência de um neurodeterminismo, que teria o condão de rechaçar a importância da culpabilidade, consagrando uma intervenção punitiva em descompasso com a dinâmica das relações sociais. A tese neurodeterminista e a consequente abolição da culpabilidade, porém, não possui procedência à luz do atual estágio de desenvolvimento da ciência, e da necessidade de um juízo de reprovação que fundamente a imposição da pena.
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Pre-orthographical constraints in reading and multi-element processing in dyslexia/Contraintes pré-orthographiques en lecture et traitement d'éléments multiples chez des dyslexiquesDubois, Matthieu 27 February 2008 (has links)
The present thesis was concerned with the possible constraints set by visual and attentional pre-orthographical factors on visual word recognition in dyslexic individuals.
In a first study, we investigated the visual word recognition ability of MT, a young boy with surface dyslexia, by means of a paradigm that measures performance as a function of the eye fixation position within the word, known as the "viewing position effect" paradigm. In well-achieving readers, the viewing position effect is mainly determined by factors affecting letter visibility and by lexical constraints on word recognition. We further quantified MT's sensory limitations on letter visibility by computing visual span profiles, i.e. the number of letters recognizable at a glance. Finally, in an ideal-observer's perspective, MT's performance was compared with a parameter-free model combining MT's letter visibility data with a simple lexical matching rule. The results showed that MT did not use the whole visual information available on letter identities to recognise words. These results can be best accounted for by a reduction of the number of letters processed in parallel.
Accordingly, there is growing evidence that some dyslexic children suffer from a deficit in simultaneously processing of multiple visually displayed elements. The aim of the remaining studies was to investigate possible cognitive impairments at the source of the multi-element visual processing deficit in dyslexic children. A computational model of the attentional involvement in multi-object recognition [TVA: Bundesen, C. (1990). A theory of visual attention. Psychological Review, 97(4), 523--47] served as framework for this investigation. In a second study, we used TVA to investigate multi-element processing in two young dyslexic participants, AB and PA. By combining psychophysical measurements with computational modelling, we demonstrated that this multi-element processing deficit stems from two distinct cognitive sources: a reduction of the rate of visual information uptake, and a limitation of the visual short-term memory capacity. These deficits were replicated in a third study, in which the multi-element processing was investigated in three dyslexic individuals, FA, LT and YC. The last study further demonstrated that the multi-element processing deficit observed in dyslexia is not simply due to a sluggish activation of items names, instead of visual processing difficulties. Finally, the generalisability of the multi-element processing deficit has been assessed by comparing report performance of letters vs colour patches. Unfortunately, the results were inconclusive.
Taken together, the results of these different studies point to a reduced capacity of processing visual information in parallel (at least for letters), that might constrain visual word recognition.
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On Rules and Methods: Neural Representations of Complex Rule Sets and Related Methodological ContributionsGörgen, Kai 20 November 2019 (has links)
Wo und wie werden komplexe Regelsätze im Gehirn repräsentiert? Drei empirische Studien dieser Doktorarbeit untersuchen dies experimentell. Eine weitere methodische Studie liefert Beiträge zur Weiterentwicklung der genutzten empirischen Methode. Die empirischen Studien nutzen multivariate Musteranalyse (MVPA) funktioneller Magnetresonanzdaten (fMRT) gesunder Probanden. Die Fragestellungen der methodischen Studie wurden durch die empirischen Arbeiten inspiriert. Wirkung und Anwendungsbreite der entwickelten Methode gehen jedoch über die Anwendung in den empirischen Studien dieser Arbeit hinaus.
Die empirischen Studien bearbeiten Fragen wie: Wo werden Hinweisreize und Regeln repräsentiert, und sind deren Repräsentationen voneinander unabhängig? Wo werden Regeln repräsentiert, die aus mehreren Einzelregeln bestehen, und sind Repräsentationen der zusammengesetzten Regeln Kombinationen der Repräsentationen der Einzelregeln? Wo sind Regeln verschiedener Hierarchieebenen repräsentiert, und gibt es einen hierarchieabhängigen Gradienten im ventrolateralen präfrontalen Kortex (VLPFK)? Wo wird die Reihenfolge der Regelausführung repräsentiert? Alle empirischen Studien verwenden informationsbasiertes funktionales Mapping ("Searchlight"-Ansatz), zur hirnweiten und räumlich Lokalisierung von Repräsentationen verschiedener Elemente komplexer Regelsätze.
Kernergebnisse der Arbeit beinhalten: Kompositionalität neuronaler Regelrepräsentationen im VLPFK; keine Evidenz für Regelreihenfolgenrepräsentation im VLPFK, welches gegen VLPFK als generelle Task-Set-Kontrollregion spricht; kein Hinweis auf einen hierarchieabhängigen Gradienten im VLPFK.
Die komplementierende methodische Studie präsentiert "The Same Analysis Approach (SAA)", ein Ansatz zur Erkennung und Behebung experimentspezifischer Fehler, besonders solcher, die aus Design–Analyse–Interaktionen entstehen. SAA ist für relevant MVPA, aber auch für anderen Bereichen innerhalb und außerhalb der Neurowissenschaften. / Where and how does the brain represent complex rule sets? This thesis presents a series of three empirical studies that decompose representations of complex rule sets to directly address this question. An additional methodological study investigates the employed analysis method and the experimental design. The empirical studies employ multivariate pattern analysis (MVPA) of functional magnetic resonance imaging (fMRI) data from healthy human participants. The methodological study has been inspired by the empirical work. Its impact and application range, however, extend well beyond the empirical studies of this thesis.
Questions of the empirical studies (Studies 1-3) include: Where are cues and rules represented, and are these represented independently? Where are compound rules (rules consisting of multiple rules) represented, and are these composed from their single rule representations? Where are rules from different hierarchical levels represented, and is there a hierarchy-dependent functional gradient along ventro-lateral prefrontal cortex (VLPFC)? Where is the order of rule-execution represented, and is it represented as a separate higher-level rule? All empirical studies employ information-based functional mapping ("searchlight" approach) to localise representations of rule set features brain-wide and spatially unbiased.
Key findings include: compositional coding of compound rules in VLPFC; no order information in VLPFC, suggesting VLPFC is not a general controller for task set; evidence against the hypothesis of a hierarchy-dependent functional gradient along VLPFC.
The methodological study (Study 4) introduces "The Same Analysis Approach (SAA)". SAA allows to detect, avoid, and eliminate confounds and other errors in experimental design and analysis, especially mistakes caused by malicious experiment-specific design-analysis interactions. SAA is relevant for MVPA, but can also be applied in other fields, both within and outside of neuroscience.
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