The vertical occipital fasciculus is a fascicle of white material running vertically in the rear of the brain. It is found at least in primates. It is the only major fiber bundle connecting dorsolateral and ventrolateral visual cortex.
The vertical occipital fasciculus consists of long nerve fibers making connections between vision sub-regions in the rear of the brain. Research indicates that it is related to both vision and cognition, since injury to it can cause reading impairment.