What Is the Occipital Lobe?

The brain takes the line from the parietal occipital sulcus to the anterior occipital notch as the front boundary, and the occipital pole is the posterior lobe of the brain. Responsible for language, motion sense, abstract concepts and visual information. The pathway for the transmission of visual information from photoreceptors to the visual center of the occipital lobe is called the visual pathway. Occipital lobe is the center of visual cortex. When the occipital lobe is damaged, not only visual impairments, but also memory deficits and motor perception disorders appear, but visual symptoms are the main symptoms.

The brain takes the line from the parietal occipital sulcus to the anterior occipital notch as the front boundary, and the occipital pole is the posterior lobe of the brain. Responsible for language, motion sense, abstract concepts and visual information. The pathway for the transmission of visual information from photoreceptors to the visual center of the occipital lobe is called the visual pathway. Occipital lobe is the center of visual cortex. When the occipital lobe is damaged, not only visual impairments, but also memory deficits and motor perception disorders appear, but visual symptoms are the main symptoms.

Chinese name

Occipital lobe

Foreign name

Occipital Lobe

Features

Responsible for visual processing

Area

Cerebral cortex

Occipital lobe anatomy

The occipital lobe is relatively small and is the rear part of the hemisphere of the brain. It is divided into the dorsal lateral surface, medial lateral surface, and basal surface (cerebellopontine surface).

Dorsal lateral surface: The frontal boundary is not obvious. The line connecting the upper end of the parietal occipital groove to the anterior occipital notch can be used as the boundary with the parietal and temporal lobes. The sulcus of the occipital lobe is irregular, and the occipital transverse sulcus is common. It is a continuation of the interparietal sulcus downward and is approximately at right angles to it. There is a crescent-shaped groove in front of the occipital pole, and the rear end of the sulcus sometimes extends to the outer side of the back. The lateral occipital sulcus is a short, parallel sulcus that is slightly oblique to the dorsal medial edge and is sometimes divided into sections. The lateral occipital sulcus divides the occipital lobe into two parts: the part above the sulcus is called the upper occipital gyrus, and the part under the sulcus is called the lateral occipital gyrus.

Inner side: the wedge-shaped part between the posterior segment of the sulcus groove and the occipital sulcus is called wedge leaf; the part below the sulcus groove is lingual gyrus.

Bottom surface: The front boundary is not obvious, and the line connecting the notch from the front of the pillow to the lower part of the corpus callosum can be used as the front boundary. The sulcus gyrus on the underside is phase-shifted with the underside of the temporal lobe. The lingual gyrus is located between the talus sulcus and the lateral collateral, and the part between the lateral sulcus and the subtemporal sulcus is the posterior part of the fusiform gyrus.

Occipital lobe function

The occipital lobe includes the visual cortex and the primary visual area. The occipital striate area is the primary visual cortical center and transmits information from the retina. The parastriate area is the secondary visual center. It is related to the processing and synthesis of visual information. The sigmoid zone has extensive connections with other areas of the two hemispheres. It plays an important role in integrating visual information with information gathered by the auditory and other sensory systems. It also processes visual information with speech and other brain functions that perform functions. The systems are linked.

During the language processing, the brain has circulatory pathways of sensory, motor, and other repetitive effects and feedback. Each pathway is independent but closely related to complex and efficient activities. The representation of any language function is not simply a one-to-one correspondence with specific brain regions; the completion of an experimental task involves not just a single brain region. The functions of different brain regions in a task are not completely equal; the functions of the same brain region in different periods of task processing are not exactly the same. It can be seen that the research road of brain language function is still long and tortuous.