Transcranial Doppler Sonography in Studies of Mental Effort [chapter]

David A., Natasha B., Holly A.
2012 Sonography  
Sonography 228 neuroimaging techniques that are revolutionizing understanding of the physiological bases of psychological processes and their disorders. Of course, instrumentation innovations do more than just opening doors for new questions to be investigated. They also constrain in some ways the answers that are obtained for those questions. Each new type of yardstick may provide an exciting novel method for measuring, but it also specifies the units of measurement, the types of things that
more » ... n readily be measured, and the kinds of things that cannot. This is equally true of more sophisticated apparatus, including those used in neuroimaging. Each technique and tool provides some distinct advantages over alternate methods, but also carries specific limitations or disadvantages. For example, the preeminent tool for contemporary neuroimaging, MRI, provides noninvasive high-resolution structural images of the brain or other organs. Carefully combined with behavioral testing to produce the functional MRI (fMRI) paradigm, this technology yields brain activity patterns that can be registered to the structural images, and compared against baseline activity patterns to provide insights into the functions associated with brain regions or networks.
doi:10.5772/30296 fatcat:2zabqvjyxzesfasvm7rlerydqe