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The two-streams hypothesis is a model of the neural processing of vision as well as hearing. [1] The hypothesis, given its initial characterisation in a paper by David Milner and Melvyn A. Goodale in 1992, argues that humans possess two distinct visual systems. [2] Recently there seems to be evidence of two distinct auditory systems as well. As visual information exits the occipital lobe, and ...
The dorsal stream, or where pathway, describes a hierarchy of areas that support visually-guided behaviors and localizing objects in space. It involves two main groups of areas, which receive separate, strong projections from V1. The lateral group in the dorsal stream consists of areas MT, MTc, MST, and FST.
The ventral stream originates in primary visual cortex and extends along the ventral surface into the temporal cortex; the dorsal stream also arises in primary visual cortex, but continues along the dorsal surface into parietal cortex.
The dorsal stream, often referred to as the 'where' pathway, is a visual processing pathway in the brain that is responsible for determining the spatial location of objects and guiding actions in relation to those objects.
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.
The dorsal pathway is a visual system that stretches from the primary visual cortex in the occipital lobe to the posterior parietal cortex. Also known as “where” or “how” stream, it seems to be responsible for the location of objects in space and for the guidance of actions (Binkofski and Buxbaum 2013).
The dorsal visual stream refers to a parallel series of cortico-cortical projections that arise chiefly from extrastriate visual areas of the occipital cortex, which innervate structures in and around the intraparietal sulcus (IPS) of the PPC.
Through meticulous animal studies, IRP researchers led by Leslie G. Ungerleider, Ph.D., and Mortimer Mishkin, M.D., identified two separate streams for processing visual inputs—dorsal projections from the visual cortex to areas within the parietal lobe, and ventral projections from the visual cortex to areas within the temporal lobe. The team ...
On the basis of new anatomical data and a reconsideration of previous functional and clinical data, we propose that the dorsal stream and its recipient parietal areas form two distinct functional systems: the dorso-dorsal stream (d-d stream) and the ventro-dorsal stream (v-d stream).
According to one widely-accepted hypothesis, the dorsal stream (so named because of the path it takes along the dorsal side of the brain) carries information related to movement and spatial relationships between objects in the visual field. It is sometimes called the "where" pathway.