Neurofeedback refers to a type of biofeedback that uses brain waves to teach self-control of brain activities and then provides a feedback signal. Brainwave activity is recorded through electrodes, and feedback on brain functioning is delivered. Neurofeedback rewards healthy brainwave activity over unhealthy activity, which results in decreasing undesirable behavior and symptoms. Audio and video feedback is typically provided using neurofeedback. Negative or positive feedback is generated for desirable or undesirable brain actions. Neurofeedback has been used in various conditions, including attention disorders such as insomnia, dyslexia, and ADHD, drug addiction, epilepsy, learning impairments and mental health problems like PTSD, depression and anxiety. It can also be utilized to develop mental performance as a whole, increase normal functioning and for restoring focus and serenity to an exhausted mind. There are other applications of neurofeedback, which includes enhancement of athletic and musical performance, and pain management. This book is compiled in such a manner, that it will provide in-depth knowledge about the dynamics and clinical applications of neurofeedback. Different approaches, evaluations, and advanced studies on this topic have been included in it. This book will serve as a reference to a broad spectrum of readers.