What is the extrastriate cortex responsible for?
Table of Contents
What is the extrastriate cortex responsible for?
The extrastriate cortex is the part of the visual cortex that is located next to the striate cortex. The extrastriate cortex consists of multiple brain areas involved in processing specific features of visual information.
What is the ventral pathway responsible for?
First, although the ventral visual pathway is primarily responsible for the processing of spatial details and high resolution visual features (and features like color which are processed mainly in the visual center), it is not the case that it alone is responsible for the recognition of objects.
What are the key functions of the major pathways in the visual cortex?
The primary visual pathway consists of the retina, optic nerve, lateral geniculate nucleus (LGN) of the thalamus, and the visual cortex of occipital lobe. Each of these structures function in sequence to transform the visual signal, leading to our visual perception of the external world.
What are cortical pathways?
The cortical motor pathway describes a trajectory of fibers whose cells of origin are located in layer V of the cerebral motor cortex.
What is the difference between the visual cortex and the extrastriate cortex?
What is extrastriate visual cortex? The term “extrastriate” refers to all visually responsive cortex other than primary visual (striate) cortex, and does not receive strong direct projections from the lateral geniculate nucleus (LGN) (seeChapter 30).
What is the pathway and where pathway?
In the currently prevailing view, the different maps are organised hierarchically into two major pathways, one involved in recognition and memory (the ventral stream or ‘what’ pathway) and the other in the programming of action (the dorsal stream or ‘where’ pathway).
What does the ventral pathway and the dorsal pathway indicates?
The occipital and parietal lobes of the human brain include two visual processing streams, a ventral one more involved in object recognition, and a dorsal one for spatial-, attention-, and action-related processes.
What type of processing is accomplished by the ventral path?
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 are Extrastriate visual areas?
Where is the extrastriate cortex in the brain?
occipital cortex
The extrastriate cortex is the region of the occipital cortex of the mammalian brain located next to the primary visual cortex. Primary visual cortex (V1) is also named striate cortex because of its striped appearance in the microscope.
What are the pathways?
The ventral stream (also known as the “what pathway”) leads to the temporal lobe, which is involved with object and visual identification and recognition.
What are pathways in the brain?
What is a neural pathway? In brief, a neural pathway is a series of connected neurons that send signals from one part of the brain to another. Neurons come in three main types: motor neurons that control muscles; sensory neurons that are stimulated by our senses; and inter-neurons that connect neurons together.
What is the difference between dorsal and ventral visual pathways?
What type of processing is accomplished by the dorsal path?
The dorsal stream (or, “where pathway”) leads to the parietal lobe, which is involved with processing the object’s spatial location relative to the viewer and with speech repetition.
What is the difference between the ventral and dorsal pathways?
What is the order of the pathway of vision?
The visual pathway consists of the retina, optic nerves, optic chiasm, optic tracts, lateral geniculate bodies, optic radiations, and visual cortex. The pathway is, effectively, part of the central nervous system because the retinae have their embryological origins in extensions of the diencephalon.
What are the main neural pathways?
In brief, a neural pathway is a series of connected neurons that send signals from one part of the brain to another. Neurons come in three main types: motor neurons that control muscles; sensory neurons that are stimulated by our senses; and inter-neurons that connect neurons together.
