The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It consists of nervous tissue and is typically located in the head (cephalization), usually near organs for special senses such as vision, hearing and olfaction. Being the most specialized organ, it is responsible for receiving information from the sensory nervous system, processing those information and the coordination of motor control.
Neuroscience is the scientific study of the nervous system, its functions, and its disorders. It is a multidisciplinary science that combines physiology, anatomy, molecular biology, developmental biology, cytology, psychology, physics, computer science, chemistry, medicine, statistics, and mathematical modeling to understand the fundamental and emergent properties of neurons, glia and neural circuits. The understanding of the biological basis of learning, memory, behavior, perception, and consciousness has been described by Eric Kandel as the "epic challenge" of the biological sciences.
Cognitive neuroscience is the scientific field that is concerned with the study of the biological processes and aspects that underlie cognition, with a specific focus on the neural connections in the brain which are involved in mental processes. It addresses the questions of how cognitive activities are affected or controlled by neural circuits in the brain. Cognitive neuroscience is a branch of both neuroscience and psychology, overlapping with disciplines such as behavioral neuroscience, cognitive psychology, physiological psychology and affective neuroscience. Cognitive neuroscience relies upon theories in cognitive science coupled with evidence from neurobiology, and computational modeling.
The following outline is provided as an overview of and topical guide to neuroscience:
Glia, also called glial cells (gliocytes) or neuroglia, are non-neuronal cells in the central nervous system and the peripheral nervous system that do not produce electrical impulses. The neuroglia make up more than one half the volume of neural tissue in the human body. They maintain homeostasis, form myelin in the peripheral nervous system, and provide support and protection for neurons. In the central nervous system, glial cells include oligodendrocytes, astrocytes, ependymal cells and microglia, and in the peripheral nervous system they include Schwann cells and satellite cells.
A neuroscientist is a scientist who has specialised knowledge in neuroscience, a branch of biology that deals with the physiology, biochemistry, psychology, anatomy and molecular biology of neurons, neural circuits, and glial cells and especially their behavioral, biological, and psychological aspect in health and disease.
Susan Adele Greenfield, Baroness Greenfield, is an English scientist, writer, broadcaster and member of the House of Lords. Her research has focused on the treatment of Parkinson's disease and Alzheimer's disease. She is also interested in the neuroscience of consciousness and the impact of technology on the brain.
Encephalization quotient (EQ), encephalization level (EL), or just encephalization is a relative brain size measure that is defined as the ratio between observed and predicted brain mass for an animal of a given size, based on nonlinear regression on a range of reference species. It has been used as a proxy for intelligence and thus as a possible way of comparing the intelligence levels of different species. For this purpose, it is a more refined measurement than the raw brain-to-body mass ratio, as it takes into account allometric effects. Expressed as a formula, the relationship has been developed for mammals and may not yield relevant results when applied outside this group.
Neuroinformatics is the emergent field that combines informatics and neuroscience. Neuroinformatics is related with neuroscience data and information processing by artificial neural networks. There are three main directions where neuroinformatics has to be applied:
Joseph Altman was an American biologist who worked in the field of neurobiology.
The evolution of the brain refers to the progressive development and complexity of neural structures over millions of years, resulting in the diverse range of brain sizes and functions observed across different species today, particularly in vertebrates.
Charles Ransom Gallistel is an Emeritus Professor of Psychology at Rutgers University. He is an expert in the cognitive processes of learning and memory, using animal models to carry out research on these topics. Gallistel is married to fellow psychologist Rochel Gelman. Prior to joining the Rutgers faculty he held positions at the University of Pennsylvania, where he was chair of the psychology department and Bernard L. & Ida E. Grossman Term Professor, and at the University of California, Los Angeles.
Carol A. Barnes is an American neuroscientist who is a Regents' Professor of psychology at the University of Arizona. Since 2006, she has been the Evelyn F. McKnight Chair for Learning and Memory in Aging and is director of the Evelyn F. McKnight Brain Institute. Barnes has been president of the Society for Neuroscience and is a Fellow of the American Association for the Advancement of Science, and foreign member of the Royal Norwegian Society of Sciences and Letters. She was elected to the National Academy of Sciences in 2018.
The White House BRAIN Initiative is a collaborative, public-private research initiative announced by the Obama administration on April 2, 2013, with the goal of supporting the development and application of innovative technologies that can create a dynamic understanding of brain function.
Dean Vincent Buonomano is an American neuroscientist and author. He is a professor at UCLA whose research focuses on neurocomputation and how the brain tells time. Buonomano has been described as one of the "first neuroscientists to begin to ask how the human brain encodes time" and has been published in various scientific journals. He is the author of two books, Brain Bugs: How the Brain's Flaws Shape our Lives and Your Brain is a Time Machine: The Neuroscience and Physics of Time. Buonomano's first book Brain Bugs examines the human brain's functional strengths and weaknesses, ultimately attributing some of the brain's 'bugs' to evolution.
Wei Ji Ma is a professor at New York University in the Department of Psychology and the Center for Neural Science. Ma focuses on the areas of perception, decision-making, and memory. He holds a PhD in theoretical physics from University of Groningen in the Netherlands. Ma is the 2021 recipient of the Jeffrey L. Elman Prize for Scientific Achievement and Community Building from the Cognitive Science Society.
Daphna Joel is an Israeli neuroscientist and advocate for "neurofeminism". She is best known for her research which claims that there is no such thing as a "male brain" or a "female brain". Joel's research has been criticized by other neuroscientists who argue that male and female brains, on average, show distinct differences and can be classified with a high level of accuracy. Joel is a member of The NeuroGenderings Network, an international group of researchers in gender studies and neuroscience. They are critical of what they call neurosexism in the scientific community. Joel has given lectures on her work in both scientific and lay conventions around the world.
The Lieber Institute for Brain Development (LIBD) is a nonprofit research center located in Baltimore, Maryland, that studies brain development issues such as schizophrenia and autism. The cause of most neuropsychiatric disorders remains unknown and current therapies such as antipsychotics and antidepressants treat symptoms rather than the underlying illness. Lieber is working to unravel the biological basis of these brain disorders and is developing therapies to treat or prevent their development.
Sabine Kastner is a German-born American cognitive neuroscientist. She is professor of psychology at the Princeton Neuroscience Institute at Princeton University. She also holds a visiting scientist appointment at the University of California at Berkeley.
