PSYB65H3 Chapter Notes - Chapter 13-14: Dyscalculia, Proprioception, Tempora
Document Summary
The occipital lobes form the posterior pole of the cerebral hemispheres, lying beneath the occipital bone at the back of the skull. On the medial surface of each hemisphere, the occipital lobe is distinguished from the parietal lobe by the parietal- occipital sulcus. Within the visual cortex, however, are three clear landmarks. The most prominent is the calcarine sulcus, which contains much of the primary cortex. The calcarine sulcus divides the upper and lower halves of the visual world. On the ventral surface of each hemisphere are two gyri (lingual and fusiform). The lingual gyrus includes part of visual cortical regions v2 and vp, whereas. The discovery that area v1 is functionally heterogeneous that a given cortical area may have more than one distinct function was unexpected. Area v2 also is heterogeneous when stained with cytochrome oxidase, but, instead of blobs, stripes are revealed. Because of the distinct stripes, the visual cortex is sometimes called the striate cortex.
