• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 75
  • 26
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • 5
  • 3
  • 3
  • 2
  • 2
  • 1
  • Tagged with
  • 146
  • 146
  • 44
  • 42
  • 40
  • 28
  • 24
  • 21
  • 19
  • 18
  • 18
  • 18
  • 17
  • 15
  • 14
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the 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.

Inference for Localized Signals in a Gaussian Random Field, with Applications to Brain Mapping

Ma, Li 11 1900 (has links)

Neural correlates of skilled movement : functional mapping of the human brain with fMRI and PET /

Ehrsson, H. Henrik, January 1900 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst., 2001. / Härtill 10 uppsatser.

Statistical issues in functional brain mapping

Holmes, Andrew Peter. January 1994 (has links)
Thesis (Ph. D.)--University of Glasgow. / Includes bibliographical references. Print version also available.

Comparing functional connectivity across the whole brain

Ing, Alex January 2014 (has links)
Functional connectivity MRI (fcMRI) based on the blood oxygen level dependent (BOLD) contrast has become a widely used modality for mapping the brain's functional architecture. In recent years, applications of fcMRI have led to numerous breakthroughs in both clinical research and basic sciences. However, there are a number of unresolved issues associated with fcMRI relating to both the modality itself, and to methods used to analyse fcMRI data. The aim of this thesis was twofold: to develop novel data analysis procedures, and to demonstrate their feasibility in dedicated neuroimaging studies. Subject head movement can act as a significant confound in fcMRI. Investigating this issue, it was found that subject motion can induce significant increases and decreases in functional connectivity across the brain. A novel motion correction method was developed, which proved more effective than standard procedures in the removal of motion induced connectivity changes. The BOLD contrast is not a direct measure of neural activity, it measures the hemodynamic response caused by changes in neural activity, which varies across the brain. The hypercapnic state is often used to calibrate the BOLD signal. This calibration crucially relies on the assumption that hypercapnia does not affect neuronal activity. An investigation into the hypercapnic state revealed that it is associated with both increases and decreases in functional connectivity. Whilst carrying out this investigation, a number of limitations, such as the need for a hypothesis and information loss, were identified in standard data analysis procedures. Three novel methods were developed to address these limitations. The efficacy of these methods was demonstrated in four different neuroimaging studies, which investigated functional connectivity changes induced by hypercapnia, aerobic exercise, hormonal changes across the menstrual cycle, and electroconvulsive therapy treatment in depression.

Intraoperative identification and display of cortical brain function

Hartmann, Steven L. January 2002 (has links)
Thesis (Ph. D. in Biomedical Engineering)--Vanderbilt University, May 2002. / Title from title screen. Includes bibliographical references.

Brain mechanisms of Pavlovian extinction

Barrett, Douglas Wayne 28 August 2008 (has links)
Not available / text

Topographic mapping of the brain activity of gifted children

Coffin, Lorraine January 1993 (has links)
The study compared the brain electrical activity of two groups of gifted children between the ages of 9 and 13 years. The electroencephalogram (EEG) was recorded with eyes closed: "at rest" and during three simple cognitive tasks. Significant differences were found in absolute power in the resting state EEG between the gifted high achievers and non-gifted, age-matched peers. No significant differences were found between the gifted underachievers and age-matched peers. Significant differences were found in absolute and relative power during the word recognition task compared to the resting EEG. No significant differences were found in the comparisons of the topographic maps for the other cognitive tasks and the resting EEG. Results suggest that topographic mapping of brain activity may provide an educational method for discriminating among children of different cognitive abilities. Implications for education are discussed and suggestions for further research are given.

Functional mapping of somatosensory cortices in the human brain /

Bodegård, Anna S. K., January 1900 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst., 2001. / Härtill 5 uppsatser.

Imaging vision : functional mapping of intermediate visual processes in man /

Larsson, Jonas, January 2001 (has links)
Diss. (sammanfattning) Stockholm : Karolinska institutet, 2001. / Härtill 4 uppsatser.

Thresholding FMRI images

Pavlicová, Martina, January 2004 (has links)
Thesis (Ph. D.)--Ohio State University, 2004. / Title from first page of PDF file. Document formatted into pages; contains xvii, 109 p.; also includes graphics (some col.) Includes bibliographical references (p. 107-109). Available online via OhioLINK's ETD Center

Page generated in 0.1056 seconds