What are the divisions of the cerebral cortex?
Sep 09, 2022
Source: Cainiu Health
Dr. Yang Jun
Introduction
The cerebral cortex can be divided into four regions: the frontal lobe cortex, motor cortex, temporal lobe cortex, and occipital lobe cortex. The frontal lobe cortex is involved in functions such as motor behavior, language expression, and attention. The motor cortex controls voluntary movements of various body parts, such as the legs, arms, and face. The temporal lobe cortex is primarily responsible for language, memory, and emotion. The occipital lobe cortex mainly handles visual functions.
The cerebral cortex can be divided into four lobes: the frontal cortex, motor cortex, temporal cortex, and occipital cortex.
1. Frontal Cortex
Anatomically, the frontal cortex is subdivided into three gyri: the superior frontal gyrus, middle frontal gyrus, and inferior frontal gyrus. It is primarily involved in motor behavior, expressive language, attention, reasoning, and spatial orientation.
2. Motor Cortex
The motor cortex comprises the premotor cortex, prefrontal association cortex, and parietal cortex. Located at the posterior end of the frontal lobe, adjacent to the central sulcus, it controls voluntary movements of various body parts—including the legs, arms, and face.
3. Temporal Cortex
The primary functions of the temporal cortex include language processing, memory formation, and emotional regulation. Damage to this region may result in symptoms such as delusions, hallucinations, and mood disorders.
4. Occipital Cortex
The occipital cortex consists of the superior occipital gyrus, inferior occipital gyrus, cuneus, and lingual gyrus. Its irregular shape lies at the posterior aspect of the brain and it is primarily responsible for visual processing.
The cerebral cortex contains approximately 70% of all neurons in the central nervous system and plays a critical role in regulating diverse brain functions—including motor control, sensory perception, vision, and balance.
