New medical imaging techniques such as PET and fMRI have allowed researchers to generate pictures showing which areas of a living brain are active at a given time. Functional magnetic resonance imaging (fMRI) localizes specific brain functions to particular brain regions by observing blood flow in different areas. This technique shows the location and magnitude of neural activity variations, influenced by external stimulation and fluctuation at rest. MRI is a technique that was developed in the 20th century to observe brain activity in healthy and abnormal brains. Diffusion-weighted magnetic resonance imaging, or diffusion tensor imaging (DTI), is a technique used for tracking white matter bundles in vivo, and gives information on the internal fibrous structure via measuring water diffusion. This diffusion tensor is used for inferring white matter connectivity.
New medical imaging techniques such as PET and fMRI have allowed researchers to generate pictures showing which areas of a living brain are active at a given time. Functional magnetic resonance imaging (fMRI) localizes specific brain functions to particular brain regions by observing blood flow in different areas. This technique shows the location and magnitude of neural activity variations, influenced by external stimulation and fluctuation at rest. MRI is a technique that was developed in the 20th century to observe brain activity in healthy and abnormal brains. Diffusion-weighted magnetic resonance imaging, or diffusion tensor imaging (DTI), is a technique used for tracking white matter bundles in vivo, and gives information on the internal fibrous structure via measuring water diffusion. This diffusion tensor is used for inferring white matter connectivity.