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The last two decades have seen prodigious growth in the application of brain imaging methods to questions of substance abuse and addiction. Despite considerable advances in our understanding of the central effects of drugs provided by preclinical data, relatively little direct evidence was known of how substances of abuse affect the brain and other eNS processes in humans. Brain imaging techniques have allowed access to the human brain and enabled the asking of questions never before imagined. The positron emission tomography (PET) data ofVolkow and her colleagues in the late 1980s, showing the uptake and time course of cocaine's binding in the human brain, revealed for the first time the di...
In recent years, considerable advances have been made in our knowledge and understanding of Parkinson's disease (PD). In particular, there has been an explosion of information regarding genetic contributions to the etiology of PD and an increased awareness of the importance of the non-motor features of the disease. Theories regarding the pathogenesis and pathophysiology of PD have also been refined, and new treatment modalities and advances implemented. Reflecting these changes, this second edition features new chapters devoted to genetic aspects of PD, non-motor features of the disease, and aspects of the pathophysiology, pathogenesis, and treatment of PD.
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The competitive examinations have become a routine procedure of recruitment and admissions for higher position and education. Now-a-days a large number of short/objective type questions appear in the examination. These questions call for quick answering for success within a specified short period of time. A sincere effort has been made by the authors to present them in most easy, short and understandable language for the benefit, students, farmers and those who are interested in agriculture and agricultural extension. “Indira’s Objective Agricultural Extension” for competitive exams in agricultural extension discipline contain 15 chapters covering all related discipline. The chapters i...