Functional Connectivity and Machine Learning for Psychiatric Drug Development


Book Description

The human brain is a complex biological network consisting of spatially separated but functionally integrated regions. Study of functional connectivity gained immense popularity in recent years providing new insight into the mechanisms underlying complex functions and the fundamental organisation of the brain. This has led to the emergence of new techniques for investigating connectivity, such as the application of pattern recognition techniques and the investigation of network dynamics. While highly promising, the application of these new techniques to pharmacological imaging data has not yet been fully explored. In this thesis we apply pattern recognition techniques to functional connectivity measures obtained for pharmacological imaging data to discriminate patterns of whole brain connectivity. Furthermore, we demonstrate that consideration of functional connectivity dynamics provides additional insight into the effect of pharmacological interventions. Specifically, we explore the effects of the N-methyl-D-aspartate receptor antagonist, ketamine, on the connectivity within the human brain. We argue that the investigation of connectivity is a more appropriate tool for the investigation of this compound due to the highly distributed pattern of effects, as compared to traditional approaches investigating amplitude effects. We demonstrate the applicability of pattern recognition techniques for the discrimination pharmacological states using measures of regional connectivity over the whole brain, using network interactions and through the inspection of network dynamics. We expand upon traditional approaches in our investigation, introducing a new approach to investigate network effects and temporal dynamics of connectivity organisation.




Frontiers in Psychiatry


Book Description

This book reviews key recent advances and new frontiers within psychiatric research and clinical practice. These advances either represent or are enabling paradigm shifts in the discipline and are influencing how we observe, derive and test hypotheses, and intervene. Progress in information technology is allowing the collection of scattered, fragmented data and the discovery of hidden meanings from stored data, and the impacts on psychiatry are fully explored. Detailed attention is also paid to the applications of artificial intelligence, machine learning, and data science technology in psychiatry and to their role in the development of new hypotheses, which in turn promise to lead to new discoveries and treatments. Emerging research methods for precision medicine are discussed, as are a variety of novel theoretical frameworks for research, such as theoretical psychiatry, the developmental approach to the definition of psychopathology, and the theory of constructed emotion. The concluding section considers novel interventions and treatment avenues, including psychobiotics, the use of neuromodulation to augment cognitive control of emotion, and the role of the telomere-telomerase system in psychopharmacological interventions.




Drug Development in Psychiatry


Book Description

The book reviews clinical trial methodology as it pertains to drug development in psychiatry. The reader will understand the process of drug development in psychiatry from discovery through marketing with the help of clinically relevant examples. The reader will appreciate the history of drug development in psychiatry dating back to the era of serendipitous discovery and culminating in an era of new and highly focused targets. Readers will understand how drug development in psychiatry has changed and adapted with the discovery of novel mechanism of action drugs. Novel drugs and disease targets have changed the way developers and regulatory agencies think about clinical trial methodology. The book elucidates how biomarkers, genetics and advances in neuroscience and neuroimaging have influenced drug development approaches, which will ultimately change the practice of psychiatry. The book will be broken down into the following sections: a. Prior to the 1960s - Drug discovery by chance observation b. The last 50 years – refined targeting of CNS drugs without the discovery of mechanistically new drugs c. The future – the discovery and development of mechanistically new drugs. The examination of new targets, genetics and biomarkers.




Personalized Psychiatry


Book Description

Personalized Psychiatry presents the first book to explore this novel field of biological psychiatry that covers both basic science research and its translational applications. The book conceptualizes personalized psychiatry and provides state-of-the-art knowledge on biological and neuroscience methodologies, all while integrating clinical phenomenology relevant to personalized psychiatry and discussing important principles and potential models. It is essential reading for advanced students and neuroscience and psychiatry researchers who are investigating the prevention and treatment of mental disorders. - Combines neurobiology with basic science methodologies in genomics, epigenomics and transcriptomics - Demonstrates how the statistical modeling of interacting biological and clinical information could transform the future of psychiatry - Addresses fundamental questions and requirements for personalized psychiatry from a basic research and translational perspective







Dynamic Functional Connectivity in Neuropsychiatric Disorders: Methods and Applications, volume II


Book Description

Neuropsychiatric disorders have a huge impact on individuals, families and societies. However, the neuropathology underlying cognitive deficits in neuropsychiatric disorders remains unclear. Resting-state functional connectivity provides a powerful way to investigate functional alterations underlying cognitive deficits in neuropsychiatric disorders. Traditional FC analysis measures the correlations of signals with an assumption that functional connectivity remains constant during the observation period. In recent years, several studies have demonstrated the feasibility of dynamic methods in characterization of functional brain changes, such as dynamic functional connectivity investigated by a sliding window method. However, selection of window size, window stepsize and window type are open areas of research and an important parameter to capture the resting-state FC dynamics.




Psychoradiology, An Issue of Neuroimaging Clinics of North America, Ebook


Book Description

This issue of Neuroimaging Clinics of North America focuses on Psychoradiology, and is edited by Dr. Qiyong Gong. Articles will include: Clinical Strategies and Technical Challenges in Psychoradiology; Resting State Functional MRI for Psychiatry; Magnetic Resonance Spectroscopy for Psychiatry; Psychoradiology of Major Depression; Psychoradiological Biomarkers for Psychopharmaceutical Effects; Implementing Imaging into Clinical Routine Screening for Psychosis; Imaging of Autism; Individual-specific Analysis for Psychoradiology; Interventional Psychoradiology: Imaging Guided Therapeutic Intervention of Neuropsychiatric Disorders; Imaging-based Subtyping for Psychiatric Syndromes; Imaging of Post-Traumatic Stress Disorder; Imaging of Schizophrenia; and more!




Precision Psychiatry


Book Description

Precision psychiatry, as outlined in this groundbreaking book, presents a new path forward. By integrating findings from basic and clinical neuroscience, clinical practice, and population-level data, the field seeks to develop therapeutic approaches tailored for specific individuals with a specific constellation of health issues, characteristics, strengths, and symptoms.




Psychiatric Genetics and Genomics


Book Description

From reviews of the hardback:'It is timely to see such an excellent textbook... Aimed at graduate level students, this book is complex enough to be thorough, but clear with enough background to be accessible... the coverage is comprehensive and the flow logical... The text is uniformly well written and achieves a successful integration.' -The Lancet'A good introduction and reference book for professionals interested in psychiatric genetics such as psychiatrists, clinical psychologists and neuroscientists... the book you want to have on your bookshelf to look up material and obtain a complete and balanced picture of the field.' -Psychological MedicineRevised for paperback edition, with new appendicesGenetics promises to provide one of the most powerful approaches to understanding the functional pathology of the human brain. This book presents a critical review of the evidence for a genetic contribution to common psychiatric conditions and the rarer single-gene disorders that may have psychiatric presentations.The first section of the book introduces the reader to molecular biology and the techniques of molecular genetics. The coverage then moves on to consider the genetics of normal and abnormal development, followed by a look at the genetics of abnormal behaviour in adults. This section includes, amongst others, consideration of personality disorders, schizophrenia and the dementias. The final section considers the applications of the work and covers issues such as counselling and ethics, closing with a look to the future.The editors are internationally renowned figures in this field and they have invited a team of equally eminent chapter authors.Readership: Psychiatrists, clinical psychologists, geneticists, neuroscientists and neurologists




Charney & Nestler's Neurobiology of Mental Illness


Book Description

In the years following publication of the DSM-5(R), the field of psychiatry has seen vigorous debate between the DSM's more traditional, diagnosis-oriented approach and the NIMH's more biological, dimension-based RDoC (research domain criteria) approach. Charney & Nestler's Neurobiology of Mental Illness is an authoritative foundation for translating information from the laboratory to clinical treatment, and its fifth edition extends beyond this reference function to acknowledge and examine the controversies, different camps, and thoughts on the future of psychiatric diagnosis. In this wider context, this book provides information from numerous levels of analysis, including molecular biology and genetics, cellular physiology, neuroanatomy, neuropharmacology, epidemiology, and behavior. Sections and chapters are edited and authored by experts at the top of their fields. No other book distills the basic science and underpinnings of mental disorders-and highlights practical clinical significance-to the scope and breadth of this classic text. In this edition, Section 1, which reviews the methods used to examine the biological basis of mental illness in animal and cell models and in humans, has been expanded to reflect critically important technical advances in complex genetics (including powerful sequencing technologies and related bioinformatics), epigenetics, stem cell biology, optogenetics, neural circuit functioning, cognitive neuroscience, and brain imaging. This range of established and emerging methodologies offer groundbreaking advances in our ability to study the brain as well as unique opportunities for the translation of preclinical and clinical research into badly needed breakthroughs in our therapeutic toolkit. Sections 2 through 7 cover the neurobiology and genetics of major psychiatric disorders: psychoses (including bipolar disorder), mood disorders, anxiety disorders, substance use disorders, dementias, and disorders of childhood onset. Also covered within these sections is a summary of current therapeutic approaches for these illnesses as well as the ways in which research advances are now guiding the search for new treatments. Each of these parts has been augmented in several different areas as a reflection of research progress. The last section, Section 8, reconfigured in this new edition, now focuses on diagnostic schemes for mental illness. This includes an overview of the unique challenges that remain in diagnosing these disorders given our still limited knowledge of disease etiology and pathophysiology. The section then provides reviews of DSM-5(R), which forms the basis of psychiatric diagnosis in the United States for all clinical work, and of RDoC, which provides an alternative perspective on diagnosis in heavy use in the research community. Also included are chapters on future efforts toward precision and computational psychiatry, which promise to someday align diagnosis with underlying biological abnormalities.