Fear is an unpleasant emotion that arises in response to perceived dangers or threats. Fear causes physiological and psychological changes. It may produce behavioral reactions such as mounting an aggressive response or fleeing the threat, commonly known as the fight-or-flight response. Extreme cases of fear can trigger an immobilized freeze response. Fear in humans can occur in response to a present stimulus or anticipation of a future threat. Fear is involved in some mental disorders, particularly anxiety disorders.
Psychology is an academic and applied discipline involving the scientific study of human mental functions and behavior. Occasionally, in addition or opposition to employing the scientific method, it also relies on symbolic interpretation and critical analysis, although these traditions have tended to be less pronounced than in other social sciences, such as sociology. Psychologists study phenomena such as perception, cognition, emotion, personality, behavior, and interpersonal relationships. Some, especially depth psychologists, also study the unconscious mind.
The following outline is provided as an overview of and topical guide to neuroscience:
Behavioral neuroscience, also known as biological psychology, biopsychology, or psychobiology, is part of the broad, interdisciplinary field of neuroscience, with its primary focus being on the biological and neural substrates underlying human experiences and behaviors, as in our psychology. Derived from an earlier field known as physiological psychology, behavioral neuroscience applies the principles of biology to study the physiological, genetic, and developmental mechanisms of behavior in humans and other animals. Behavioral neuroscientists examine the biological bases of behavior through research that involves neuroanatomical substrates, environmental and genetic factors, effects of lesions and electrical stimulation, developmental processes, recording electrical activity, neurotransmitters, hormonal influences, chemical components, and the effects of drugs. Important topics of consideration for neuroscientific research in behavior include learning and memory, sensory processes, motivation and emotion, as well as genetic and molecular substrates concerning the biological bases of behavior. Subdivisions of behavioral neuroscience include the field of cognitive neuroscience, which emphasizes the biological processes underlying human cognition. Behavioral and cognitive neuroscience are both concerned with the neuronal and biological bases of psychology, with a particular emphasis on either cognition or behavior depending on the field.
Extinction is a behavioral phenomenon observed in both operantly conditioned and classically conditioned behavior, which manifests itself by fading of non-reinforced conditioned response over time. When operant behavior that has been previously reinforced no longer produces reinforcing consequences, the behavior gradually returns to operant levels. In classical conditioning, when a conditioned stimulus is presented alone, so that it no longer predicts the coming of the unconditioned stimulus, conditioned responding gradually stops. For example, after Pavlov's dog was conditioned to salivate at the sound of a metronome, it eventually stopped salivating to the metronome after the metronome had been sounded repeatedly but no food came. Many anxiety disorders such as post-traumatic stress disorder are believed to reflect, at least in part, a failure to extinguish conditioned fear.
Gary Berntson is an emeritus professor at Ohio State University with appointments in the departments of psychology, psychiatry and pediatrics. He is an expert in psychophysiology, neuroscience, biological psychology, and with his colleague John Cacioppo, a founding father of social neuroscience. His research attempts to elucidate the functional organization of brain mechanisms underlying behavioral and affective processes, with a special emphasis on social cognition.
Stephen W. Porges is an American psychologist. He is the Professor of Psychiatry at the University of North Carolina at Chapel Hill. Porges is also currently Director of the Kinsey Institute Traumatic Stress Research Consortium at Indiana University Bloomington, which studies trauma.
Carolyn Rovee-Collier was a professor of psychology at Rutgers University. Born in Nashville, Tennessee, she was a pioneer and an internationally renowned expert in cognitive development. She was named one of the 10 most influential female graduates of Brown University. The International Society for Developmental Psychobiology awards the Rovee-Collier Mentor Award in her honor.
The Foundation for Psychocultural Research is a 501(c)(3) nonprofit organization based in Los Angeles that supports and advances interdisciplinary and integrative research and training on interactions of culture, neuroscience, psychiatry, and psychology, with an emphasis on cultural processes as central. The primary objective is to help articulate and support the creation of transformative paradigms that address issues of fundamental clinical and social concern.
Myron Arms Hofer is an American psychiatrist and research scientist, currently Sackler Institute Professor Emeritus in the Department of Psychiatry at Columbia University College of Physicians & Surgeons. He is known for his research on basic developmental processes at work within the mother-infant relationship. Using animal models, he found unexpected neurobiological and behavioral regulatory processes within the observable interactions of the infant rat and its mother. Through an experimental analysis of these sensorimotor, thermal and nutrient-based processes, he has contributed to our understanding of the impact of early maternal separation, the origins of the attachment system, and the shaping of later development by variations in how mothers and infants interact.
Vada Harlene Hayne is an American-born academic administrator who was the vice-chancellor and a professor of psychology at the University of Otago in New Zealand, before moving to Western Australia to take up the position of vice-chancellor at Curtin University in April 2021.
Richard Allan Bryant is an Australian medical scientist. He is Scientia Professor of Psychology at the University of New South Wales (UNSW) and director of the UNSW Traumatic Stress Clinic, based at UNSW and Westmead Institute for Medical Research. His main areas of research are posttraumatic stress disorder (PTSD) and prolonged grief disorder. On 13 June 2016 he was appointed a Companion of the Order of Australia (AC), for eminent service to medical research in the field of psychotraumatology, as a psychologist and author, to the study of Indigenous mental health, as an advisor to a range of government and international organisations, and to professional societies.
Stephen Andrew Maren is an American behavioral neuroscientist investigating the brain mechanisms of emotional memory, particularly the role context plays in the behavioral expression of fear. He has discovered brain circuits regulating context-dependent memory, including mapping functional connections between the hippocampus, prefrontal cortex, and amygdala that are involved in the expression and extinction of learned fear responses.
Deanna Marie Barch is an American psychologist. She is a chair and professor of Psychological and Brain Sciences and the Gregory B. Couch Professor of Psychiatry at Washington University in St. Louis. Her research includes disorders such as schizophrenia, depression, cognitive and language deficits. She also focuses on behavioral, pharmacological, and neuroimaging studies with normal and clinical populations. Barch is a deputy editor at Biological Psychiatry. She previously served as editor-in-chief of Cognitive, Affective and Behavioral Neuroscience.
Catherine Hartley is an American psychologist and an Associate Professor of Psychology within the Department of Psychology and Center for Neural Science at New York University in New York City. Hartley's research explores how brain development impacts the evaluation of negative experiences, decision-making, and motivated behavior. Her work has helped to elucidate how uncontrollable aversive events affect fear learning and how learning to control aversive stimuli can improve emotional resilience.
Betty Jo "BJ" Casey is an American cognitive neuroscientist and expert on adolescent brain development and self control. She is the Christina L. Williams Professor of Neuroscience at Barnard College of Columbia University where she directs the Fundamentals of the Adolescent Brain (FAB) Lab and is an Affiliated Professor of the Justice Collaboratory at Yale Law School, Yale University.
Regina Sullivan is an American developmental behavioral neuroscientist, a professor of child and adolescent psychiatry at the New York University School of Medicine and senior research scientist in the Emotional Brain Institute at The Nathan Kline Institute for Psychiatric Research.
Howard Moltz (1927-2004) was an American developmental biopsychologist who was a professor of psychology at the University of Chicago. Much of his earlier research focused on imprinting and maternal behavior in rats, but later in his career, he shifted to using positron emission tomography to research sexual behavior in humans. He was a fellow of the American Association for the Advancement of Science and served as president of the International Society for Developmental Psychobiology. Shortly after his death in 2004, the Illinois General Assembly passed a resolution in his honor.
Kimberly G. Noble is an American neuroscientist and pediatrician known for her work in socioeconomic disparities and children's cognitive development. She is Professor of Neuroscience and Education at Teachers College, Columbia University and Director of the Neurocognition, Early Experience and Development (NEED) Lab.
