|The utilization of various neuroimaging modalities to illuminate the structural and functional abnormalities detected in neuropsychiatric brain disorders has reached an unprecedented stage of evolvement in the medical community. Advances in structural and functional brain imaging technologies enable the medical community to discover the neurobiological basis of neurological illness in a very precise and dependable manner. Neuroimaging tools such as PET, SPECT and MRI have been better developed in order to further the neuroanatomical and neurophysiological basis of mental illnesses and cognitive disorders. With the advent of radiological innovation in neuroimaging, the focus in the medical community has shifted from the examination and study of single brain regions perhaps responsible for a specific psychiatric illness, to the critical examination of integrated brain systems which may be responsible for the phenotypic expressions of these illnesses. Imaging techniques have now made it quite clear that we must begin to investigate the neural networks involved in the pathophysiology of neuropsychiatric disorder.
Review articles are the summary of current state of understanding on a particular research topic. They analyze or discuss research previously published by scientist and academicians rather than reporting novel research results.
Review article comes in the form of systematic reviews and literature reviews and are a form of secondary literature. Systematic reviews determine an objective list of criteria, and find all previously published original research papers that meet the criteria. They then compare the results presented in these papers. Literature reviews, by contrast, provide a summary of what the authors believe are the best and most relevant prior publications.
The concept of "review article" is separate from the concept of peer-reviewed literature. It is possible for a review to be peer-reviewed, and it is possible for a review to be non-peer-reviewed.