Cortical

Cortical pertains to the cortex, which is the outer layer of an organ or body part, particularly in the brain. In neuroscience, the term is most often associated with the cerebral cortex, the highly folded outer sheet of the brain responsible for complex functions such as perception, thought, judgment, and voluntary movement. The cerebral cortex is comprised of gray matter, densely packed with neuronal cell bodies and synapses, and is distinguished from the underlying white matter, which contains myelinated axons that connect different regions.

The cortex is organized into regions that serve various functions. For example, the motor cortex controls voluntary movements, while the sensory cortex processes tactile and proprioceptive information. The visual cortex, located in the occipital lobe, is specialized for processing visual stimuli, and the auditory cortex in the temporal lobe handles auditory information.

Cortical structures are not unique to humans; they are present in many mammals and other vertebrates, although their size and complexity vary across species. The development of the cortex is crucial for advanced cognitive abilities such as language, problem-solving, and abstract thinking.

In addition to the brain, the term “cortical” is used in anatomy to describe the cortex of other organs, such as the adrenal cortex, which produces hormones like cortisol and aldosterone, or the renal cortex of the kidney, involved in filtration and urine formation.

Overall, "cortical" relates to the outer layer that plays a vital role in processing information and coordinating responses in various biological systems. Its structural and functional complexity is a key feature of higher biological organization and intelligence.