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Love is one of the most profound emotions known to human beings. There are many kinds of love, but most people seek its expression in a romantic relationship with a compatible partner. For many, romantic relationships comprise the most meaningful aspect of life, providing a source of deep fulfillment.
The complicated, multidisciplinary, and quickly developing field of neuroscience looks at the structure and function of the human brain and nervous system. Neuroscience research draws on cellular and molecular biology, anatomy and physiology, human behavior and cognition, and other disciplines, to tool out information about how the brain works at levels previously unrecognized.
Cognition refers, quite simply, to thinking. There are the obvious applications of conscious reasoning—doing taxes, playing chess, deconstructing Macbeth—but thought takes many subtler forms, such as interpreting sensory input, guiding physical actions, and empathizing with others.