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The limbic system, also known as the paleomammalian cortex, is a set of brain structures located on both sides of the thalamus, immediately beneath the medial temporal lobe of the cerebrum primarily in the forebrain. [1] Its various components support a variety of functions including emotion, behavior, long-term memory, and olfaction. [2]
The association cortex is a part of the cerebral cortex that performs complex cognitive functions. [ 1 ] [ 2 ] Unlike primary sensory or motor areas , which process specific sensory inputs or motor outputs, the association cortex integrates information from various sources to support higher-order cognitive processes.
The insular cortex is divided by the central sulcus of the insula, into two parts: the anterior insula and the posterior insula in which more than a dozen field areas have been identified. The cortical area overlying the insula toward the lateral surface of the brain is the operculum (meaning lid). The opercula are formed from parts of the ...
Anterior parietal cortex; This association area—one of three in the cortex—is responsible for the assembly of auditory, visual, and somatosensory system information. Meaning is assigned to stimuli in the PTO, which outputs to numerous other areas of the brain, notably the limbic and prefrontal association areas, which are involved in memory.
In neuroanatomy, the cingulum or cingulum bundle is an association tract, a nerve tract that projects from the cingulate gyrus to the entorhinal cortex in the brain, allowing for communication between components of the limbic system. [1]
The uncinate fasciculus is a white matter association tract in the human brain that connects parts of the limbic system such as the temporal pole, anterior parahippocampus, and amygdala in the temporal lobe with inferior portions of the frontal lobe such as the orbitofrontal cortex.
The term limbic system was introduced in 1952 by Paul MacLean [15] to describe the set of structures that line the deep edge of the cortex (Latin limbus meaning border): These include the hippocampus, cingulate cortex, olfactory cortex, and amygdala. Paul MacLean later suggested that the limbic structures comprise the neural basis of emotion.
Fornix as one of the limbic structures. Scheme of rhinencephalon. The fibers begin in the hippocampus on each side of the brain as fimbriae; the separate left and right sides are each called the crus of the fornix (plural crura). The bundles of fibers come together in the midline of the brain, forming the body of the fornix.