Brodmann area 19 is shown in yellow in this image which also shows ares 17 (red) and 18 (orange)
Brodmann area 19, or BA19, is part of the occipital lobecortex in the human brain. Along with area 18, it comprises the extrastriate (or peristriate) cortex. In normally-sighted humans, extrastriate cortex is a visual association area, with feature-extracting, shape recognition, attentional, and multimodal integrating functions. Image File history File links Description Brodmann areas 17, 18 and 19 BA 17 is shown in red. ... Image File history File links Description Brodmann areas 17, 18 and 19 BA 17 is shown in red. ... The occipital lobes are the visual processing center of mammalian brains. ... Cerebral cortex - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... Picture of a human brain generated from MRI data Sagittal slice from a fMRI scan of a human brain. ...
Area 19 in humans is likely to be homologous to area V3 in the primate. It has reciprocal connections with areas 17 and 18, as well as posterior parietal association areas.
A Brodmann area is a region in the brain cortex defined by its cytoarchitectonic characteristics. ... Human brain image constructed from MRI data Brain (neural tube) Brainstem (rhombencephalon),(mesencephalon) Rhombencephalon (hindbrain) Metencephalon pons fourth ventricle cerebellum cerebellar vermis cerebellar hemispheres anterior lobe posterior lobe flocculonodular lobe cerebellar nuclei fastigial nucleus globose nucleus emboliform nucleus dentate nucleus Myelencephalon medulla oblongata medullary pyramids Mesencephalon (midbrain) tectum inferior colliculi...
References
Hyvarinen, J., Carlson, Y. and Hyvarinen, L. (1981) Early visual deprivation alters modality of neuronal responses in area 19 of monkey cortex, Neurosci. Lett. 26, 239–243
Rostrally it is bounded by the angular area 39 (H) and the occipitotemporal area 37 (H) (Brodmann-1909).
Single-cell electrophysiological recordings from area19 in the cat suggest sensitivity to motion-delineated forms; recordings from primates have yielded varying results, indicating that this area may be a heterogeneous collection of visual areas, with multiple incomplete representations of the visual scene.
Area19 has been noted to receive inputs from the lateral geniculate nucleus via the pulvinar, and may contribute to the phenomenon of blindsight.
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