Divisions of parietal lobe
1. anterior (1-3, 43)2. posterior
The parietal lobe is one of the four major lobes of the brain, located above the occipital lobe and behind the frontal lobe. It is responsible for processing sensory information from the body and integrating this information to guide motor planning and other cognitive processes. The parietal lobe can be divided into several regions based on various functional and anatomical criteria. Here are some of the key divisions of the parietal lobe:
1. Primary somatosensory cortex: This region lies along the postcentral gyrus of the parietal lobe and is responsible for processing sensory information related to touch, temperature, pain, and pressure from various parts of the body. The primary somatosensory cortex is arranged in an orderly manner known as the somatotopic map, which represents the body’s sensory receptors in a systematic way.
2. Secondary somatosensory cortex: This region is located near the primary somatosensory cortex and is involved in higher-order processing of sensory information, such as discriminating between textures or recognizing objects by touch.
3. Parietal association cortex: This region is located towards the back of the parietal lobe, and is involved in integrating sensory information from different modalities, such as touch and vision. The parietal association cortex is also involved in spatial cognition, attention, and perception of the body’s position in space.
4. Superior parietal lobule: This region lies towards the top of the parietal lobe, and is involved in integrating information related to spatial orientation and movement planning. The superior parietal lobule is also involved in numerical cognition and visuospatial working memory.
5. Inferior parietal lobule: This region lies toward the bottom of the parietal lobe, and is involved in various aspects of cognition, including language processing, arithmetic, and theory of mind (i.e., understanding other people’s mental states).
Overall, the parietal lobe plays a critical role in integrating sensory information from the body and the environment to guide motor planning and other cognitive processes. Its various subdivisions are responsible for specialized functions related to touch, spatial perception, attention, and higher-order cognition.
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