parietaloccipital

Parietaloccipital refers to the posterior region of the brain where the parietal and occipital lobes meet. In anatomical practice, a key landmark of this boundary on the medial surface is the parieto-occipital sulcus, which helps delineate the edge between parietal and occipital tissue. On the lateral surface, the boundary between these lobes is less sharply defined, and the parietal-occipital region is often described in relation to nearby structures such as the precuneus (part of the parietal lobe) and portions of the occipital cortex.

The parietal-occipital region is associated with visuospatial processing and the integration of visual information with spatial orientation. It participates in tasks involving the perception of space, attention to visual scenes, and coordination of visually guided movements. Functional imaging frequently shows activation in this posterior area during spatial analysis, eye-hand coordination, and mental imagery that relies on spatial relationships.

Clinically, disruption of parietal-occipital areas can affect visuospatial abilities and visual attention. Lesions in this region may contribute to difficulties with spatial navigation, scene perception, or integration of visual input with motor planning, depending on the extent and laterality of the damage. The term is commonly used in neuroanatomy and neuroimaging to describe a posterior boundary region rather than a discrete, standalone lobe.

See also: parietal lobe, occipital lobe, parieto-occipital sulcus, precuneus.