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- W1564342123 abstract "Abstract Different imaging techniques allow the investigator to observe a number of physiological changes that are associated with brain function with great specificity regarding the location and the timing of events. In this chapter, we discuss a number of applications of neuroimaging to cognitive psychology questions, such as mapping different brain functions; and we investigate the dissociation between cognitive processes. This chapter also discusses the strategies and statistical principles of designing a functional neuroimaging experiment in the context of cognitive psychology research. Our review ranges from basic blocked designs to more complex event‐related designs, and we explain the principles of subtraction, parametric variation, factorial and correlation designs. The chapter includes an overview of the physics and engineering principles of Positron Emission Tomography (PET) and Magnetic Resonance Imaging (MRI), the two dominant functional neuroimaging techniques. We discuss the phenomenon of positron emission and detection in PET scanning along with the reconstruction of PET images through filtered backprojection. For MRI, we discuss the concepts of magnetic moment, spin precession, resonance, and the BOLD effect, as well as how to obtain spatial information (i.e., an image) from the resonance signal by use of the Fourier Transform. Finally, the chapter provides an introduction to the current methods of statistical analysis that are applied to functional imaging data, with emphasis placed on regression techniques, or the “general linear model.”" @default.
- W1564342123 created "2016-06-24" @default.
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- W1564342123 date "2002-02-21" @default.
- W1564342123 modified "2023-09-23" @default.
- W1564342123 title "Functional Brain Imaging" @default.
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- W1564342123 doi "https://doi.org/10.1002/0471214426.pas0405" @default.
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