What are the dorsal and ventral visual processing streams specialized for?

It describes two information processing streams originating in the occipital cortex, dorsal (which goes to parietal cortex) and ventral (which goes to temporal cortex), which exhibit relative specialization in object recognition (what) and spatial vision (where).

What does the ventral visual stream do?

a pathway that carries visual information from the primary visual cortex to the temporal lobe. According to one widely-accepted hypothesis, the ventral stream (so named because of the path it takes along the ventral side of the brain) carries information related to object form and recognition.

What does the dorsal visual stream do?

The dorsal stream is involved in spatial awareness and guidance of actions (e.g., reaching). In this it has two distinct functional characteristics—it contains a detailed map of the visual field, and is also good at detecting and analyzing movements.

What are the two visual streams?

Two broad “streams” of projections from primary visual cortex have been identified: a ventral stream projecting to the inferotemporal cortex and a dorsal stream projecting to the posterior parietal cortex.

What is the difference between the dorsal and ventral visual streams?

The ventral stream (or “vision-for-perception” pathway) is believed to mainly subserve recognition and discrimination of visual shapes and objects, whereas the dorsal stream (or “vision-for-action” pathway) has been primarily associated with visually guided reaching and grasping based on the moment-to-moment analysis …

What is ventral visual cortex?

The ventral visual pathway is a functional stream involved in the visual recognition of objects. This pathway consists of visual input from primary visual cortex V1 relayed through areas V2 and V4, and ultimately projected into the inferior temporal cortex.

What is the difference between ventral and dorsal stream?

Where is the dorsal visual stream?

In the human brain, the dorsal stream originates in the primary visual cortex and terminates in the superior parietal lobule (see Creem & Proffitt, 2001, for a review).

What type of information does the dorsal stream process?

a pathway that carries visual information from the primary visual cortex to the parietal lobe.

Where is the dorsal visual pathway?

Dorsal visual pathway: this pathway extends from the primary visual cortex (V1) in the occipital lobe to the parietal lobe. The dorsal pathway is subdivided by the intraparietal sulcus (IPS) into several main sectors including the superior parietal lobule, inferior parietal lobule, and the supramarginal gyrus.

Where does the dorsal stream project to?

From the early visual areas, the ventral stream runs to the inferotemporal cortex, whereas the dorsal stream projects to the posterior parietal cortex.

Which visual stream is involved with directing attention such as during active perception?

The occipito-temporal and parietal lobes of the human brain contain two major processing streams: the ventral stream is involved more in processes related to object recognition, and the dorsal one more in spatial processing, attention, and online control of actions (Milner and Goodale, 2006).