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anterolateral system

a major somatosensory system consisting of nerve fibers that originate mostly from dorsal horn cells and ascend in the white matter of the spinal cord, conveying information about pain, temperature, and touch to higher centers. It includes the spinothalamic tract; the spinoreticular tract, traveling through the spinal cord to the reticular formation of the brainstem; and the spinomesencephalic tract, traveling through the spinal cord to the mesencephalon (midbrain).

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Psychology term of the day

November 19th 2024

social organization

social organization

the complete set of social relationships among members of a society or other group, which determines the structure of the group and the place of individuals within it. These relationships can be based on several variables: kinship, age, sex, area of residence, and—in human beings—religion, matrimony, or common interests. The social organization is usually implemented by rules of behavior produced by social interactions involving dominance, territoriality, the mating system, and cooperation.