Neuroimaging Techniques
Mostrando 13-24 de 28 artigos, teses e dissertações.
-
13. Automatic in-vivo MRS signal quantification for the classification of brain tumors / Quantificação de sinais de MRS do cerebro in-vivo para classificação de tumores
The aim of this work was to study and validate techniques for pre-processing and quantificating Magnetic Resonance Spectroscopy data, obtained in vivo from the human brain, in order to get information clinically useful for the study and diagnosis of brain tumors. Therefore, a literature-based study of the technique was made, including a review of the Physics
Publicado em: 2008
-
14. Recent advances in funtional neuroimaging techniques
Revista Brasileira de Psiquiatria. Publicado em: 2002-03
-
15. Functional neuroimaging studies of encoding, priming, and explicit memory retrieval
Human functional neuroimaging techniques provide a powerful means of linking neural level descriptions of brain function and cognition. The exploration of the functional anatomy underlying human memory comprises a prime example. Three highly reliable findings linking memory-related cognitive processes to brain activity are discussed. First, priming is a
The National Academy of Sciences.
-
16. Neuroimaging analyses of human working memory
We review a program of research that uses neuroimaging techniques to determine the functional and neural architecture of human working memory. A first set of studies indicates that verbal working memory includes a storage component, which is implemented neurally by areas in the left-hemisphere posterior parietal cortex, and a subvocal rehearsal component, wh
The National Academy of Sciences.
-
17. Techniques for measuring sulcal/gyral patterns in the brain as visualized through magnetic resonance scanning: BRAINPLOT and BRAINMAP.
A method for measuring sulcal and gyral patterns, using data derived from magnetic resonance (MR) scanning, is described. This method can be applied through two newly developed computer programs, BRAINPLOT and BRAINMAP. These programs provide quantitative measures of brain surface pattern. The method has been validated with postmortem brains, phantoms, and h
-
18. Molecular Neuroimaging in Alzheimer’s Disease
Summary: Considerable data exist to support the use of positron emission tomography (PET) and single photon emission computed tomography (SPECT) scanning as biomarkers for Alzheimer’s disease (AD). The techniques are reasonably sensitive and specific in differentiating AD from normal aging, and recent studies with pathological confirmation show good sensit
The American Society for Experimental NeuroTherapeutics.
-
19. Illusory memories: A cognitive neuroscience analysis
Memory illusions and distortions have long been of interest to psychology researchers studying memory, but neuropsychologists and neuroscientists have paid relatively little attention to them. This article attempts to lay the foundation for a cognitive neuroscience analysis of memory illusions and distortions by reviewing relevant evidence from a patien
The National Academy of Sciences of the USA.
-
20. Glial reduction in the subgenual prefrontal cortex in mood disorders
Mood disorders are among the most common neuropsychiatric illnesses, yet little is known about their neurobiology. Recent neuroimaging studies have found that the volume of the subgenual part of Brodmann’s area 24 (sg24) is reduced in familial forms of major depressive disorder (MDD) and bipolar disorder (BD). In this histological study, we used unbiased s
The National Academy of Sciences.
-
21. The Functional Magnetic Resonance Imaging Data Center (fMRIDC): the challenges and rewards of large-scale databasing of neuroimaging studies.
The Functional Magnetic Resonance Imaging Data Center (fMRIDC) (http://www.fmridc.org) was established in the Autumn of 1999 with the objective of creating a mechanism by which members of the neuroscientific community may more easily share functional neuroimaging data. Examples in other sciences offer proof of the usefulness and benefit that sharing data pro
-
22. Event-related brain potentials in the study of visual selective attention
Event-related brain potentials (ERPs) provide high-resolution measures of the time course of neuronal activity patterns associated with perceptual and cognitive processes. New techniques for ERP source analysis and comparisons with data from blood-flow neuroimaging studies enable improved localization of cortical activity during visual selective attenti
The National Academy of Sciences.
-
23. Retinotopic mapping of lateral geniculate nucleus in humans using functional magnetic resonance imaging
Subcortical nuclei in the thalamus, which play an important role in many functions of the human brain, provide challenging targets for functional mapping with neuroimaging techniques because of their small sizes and deep locations. In this study, we explore the capability of high-resolution functional magnetic resonance imaging at 4 Tesla for mapping the ret
The National Academy of Sciences.
-
24. The kinaesthetic senses
This review of kinaesthesia, the senses of limb position and limb movement, has been prompted by recent new observations on the role of motor commands in position sense. They make it necessary to reassess the present-day views of the underlying neural mechanisms. Peripheral receptors which contribute to kinaesthesia are muscle spindles and skin stretch recep
Blackwell Science Inc.