Visual area V2 - Medicow
About us  |  Why use us?  |  Press  |  Contact us

 

Topic: Visual area V2



  
 Articles - Visual cortex
Visual area V4 is not tuned for complex objects such as faces, as areas in the inferotemporal cortex are.
Visual area V4 is one of the visual areas in the extrastriate visual cortex of the macaque monkey.
V4 is the third cortical area in the ventral stream, receiving strong feedforward input from V2 and sending strong connections to the posterior inferotemporal cortex (PIT).
http://www.lastring.com/articles/Primary_visual_cortex?mySession=5e43e902973789f8450b9df8812ff905

  
 ipedia.com: Occipital lobe Article
Primary visual cortex projects to the occipital areas of the ventral stream (visual area V2 and visual area V4), and the occipital areas of the dorsal stream (visual area V3, visual area MT (V5), and visual area DP.
The primary visual area is Brodmann area 17, located in the interior portion of the occipital lobe at the calcarine sulcus and sometimes continuing onto the surface of the lobe.
The primary visual area is Brodmann area 17, located in the interior portion of the occipital lobe at the calcarine sulcus and...
http://www.ipedia.com/occipital_lobe.html   (527 words)

  
 The Torch: The World is in the Eye
We are then in the situation that different aspects of the visual world appear to reside in different areas of the brain, which are not in direct contact with each other.
The large area of the retina covered by each of these neurons should be viewed in context, in that the columns here are not ordered according to position on the retina, in contrast to V1, V2 or V5 for instance.
From V2 and V4 (another border area) connections end in the inferotemporal cortex, which as the name states, is an area in the lower part of the temporal cortex.
http://www.faklen.dk/en/the_torch/eye.shtml   (527 words)

  
 Journal of Vision - Visual field representations and locations of visual areas V1/2/3 in human visual cortex, by Dougherty, Koch, Brewer, Fischer, Modersitzki, & Wandell
The mean area between the 2-deg and 12-deg eccentricities for the primary visual areas was: V1: 1470 mm2; V2: 1115 mm2; and V3: 819 mm2.
To facilitate analysis and visualization of the data, the occipital lobe area of interest was computationally flattened ( Wandell, Chial, and Backus, 2000).
Should this connection become secure, then the analysis of correlation between surface area and performance may provide a means for uncovering the functional role of visual areas.
http://www.journalofvision.org/3/10/1/article.aspx   (527 words)

  
 CRL Newsletter Article 4-4
Far from being 'across from the language cortex', the visual areas in posterior inferotemporal cortex damaged in these patients may be the primary site of semantic pro- cessing in sighted humans.
The main difference between the maps is the reduced size of the areas between V2 and MT in owl mon- keys, the shape of V3 (owl monkey DM, its probably homolo- gue, is much less elongated than the macaque area), and the somewhat larger size of several inferotemporal areas.
All areas shown are visual except for area PM (owl monkey) and area STP (macaque), which border on somatosensory and auditory cortices (not shown).
http://crl.ucsd.edu/newsletter/4-4/Article1.html   (5385 words)

  
 Extrastriate cortex - Wikipedia, the free encyclopedia
In primates, the extrastriate cortex includes visual area V2, visual area V3, Visual area V4, visual area MT (sometimes called V5), and visual area DP.
The extrastriate cortex is the region of the occiptial cortex of the mammalian brain located next to the striate cortex (which is also known as the primary visual cortex).
In terms of Brodmann areas, the extrastriate cortex comprises Brodmann area 18 and Brodmann area 19, while the striate cortex comprises Brodmann area 17.
http://en.wikipedia.org/wiki/Extrastriate   (164 words)

  
 Search for Color 'Center(s)' in Macaque Visual Cortex -- Tootell et al. 14 (4): 353 -- Cerebral Cortex
Tootell RB, Hamilton SL (1989) Functional anatomy of the second visual area (V2) in the macaque.
Walsh V, Carden D, Butler SR, Kulikowski JJ (1993) The effects of V4 lesions on the visual abilities of macaques: hue discrimination and colour constancy.
location in visual space, this grating was effectively orientation-specific.
http://cercor.oxfordjournals.org/cgi/content/full/14/4/353   (6093 words)

  
 Journal of Vision - Visual field representations and locations of visual areas V1/2/3 in human visual cortex, by Dougherty, Koch, Brewer, Fischer, Modersitzki, & Wandell
With this technique, we obtain an objective map of each individual’s early retinotopic visual areas.
To facilitate analysis and visualization of the data, the occipital lobe area of interest was computationally flattened ( Wandell, Chial, and Backus, 2000).
Should this connection become secure, then the analysis of correlation between surface area and performance may provide a means for uncovering the functional role of visual areas.
http://www.journalofvision.com/3/10/1/article.aspx   (6093 words)

  
 Brain activation during maintenance of standing postures in humans -- Ouchi et al. 122 (2): 329 -- Brain
the right primary and secondary visual cortex [Brodmann area
McKeefry DJ, Watson JD, Frackowiak RS, Fong K, Zeki S. The activity in human areas V1/V2, V3, and V5 during the perception of coherent and incoherent motion.
in the foot area while walking in humans revealed by our previous
http://brain.oxfordjournals.org/cgi/content/full/122/2/329   (4336 words)

  
 Posterior parietal cortex in rhesus monkey: I. Parcellation of areas based on distinctive limbic and sensory corticocortical connections.
The connections between posterior parietal areas and visual areas located on the medial surface of the occipital and parieto-occipital cortex, containing peripheral representations of the visual field (V2, V3, PO), represent a major previously unrecognized source of visual inputs to the parietal association cortex.
Area 7a (the caudal part of the posterior parietal lobe) is reciprocally interconnected with multiple visual-related areas: the superior temporal polysensory area (STP) in the upper bank of the superior temporal sulcus (STS), visual motion areas in the upper bank of STS, the dorsal prelunate gyrus, and portions of V2 and the parieto-occipital (PO) area.
Area 7m (on the medial posterior parietal cortex) has its own topographically distinct connections with the limbic (the posterior ventral bank of the cingulate sulcus, granular retrosplenial cortex, and presubiculum), visual (V2, PO, and the visual motion cortex in the upper bank of the STS), and somatosensory (SSA, and area 5) cortical areas.
http://brainmeta.com/neuroanat/a20.html   (4336 words)

  
 Occipital lobe
Primary visual cortex projects to the occipital areas of the ventral stream (visual area V2 and visual area V4), and the occipital areas of the dorsal stream (visual area V3, visual area MT (V5), and visual area DP.
The primary visual area is Brodmann area 17, located in the interior portion of the occipital lobe at the calcarine sulcus and sometimes continuing onto the surface of the lobe.
The first functional area is the primary visual cortex.
http://www.psychdaily.com/encyclopedia.php?term=Occipital+lobe   (468 words)

  
 Visual
Visual area V4 Visual area V4 is an one of the visual areas in the visual area V2, and posterior to visual area PIT.
Visual binary A visual binary resolving power of the telescope is an important factor in the detection of visual binarie...
Visual cortex The visual cortex is the part of the 1981 for their work on the visual cortex.
http://www.brainyencyclopedia.com/topics/visual.html   (468 words)

  
 Visual
Visual area V4 Visual area V4 is an one of the visual areas in the visual area V2, and posterior to visual area PIT.
Visual cortex The visual cortex is the part of the 1981 for their work on the visual cortex.
Visual binary A visual binary resolving power of the telescope is an important factor in the detection of visual binarie...
http://www.brainyencyclopedia.com/topics/visual.html   (468 words)

  
 Occipital lobe
Primary visual cortex projects to the occipital areas of the ventral stream (visual area V2 and visual area V4), and the occipital areas of the dorsal stream (visual area V3, visual area MT (V5), and visual area DP.
The primary visual area is Brodmann area 17, located in the interior portion of the occipital lobe at the calcarine sulcus and sometimes continuing onto the surface of the lobe.
Lesions in the parietal-temporal-occipital association area are associated with color agnosia, movement agnosia, agraphia and alexia.
http://www.psychdaily.com/encyclopedia.php?term=Occipital+lobe   (468 words)

  
 occipital lobe: Definition and Much More From Answers.com
Primary visual cortex projects to the occipital areas of the ventral stream ( visual area V2 and visual area V4), and the occipital areas of the dorsal stream ( visual area V3, visual area MT (V5), and visual area DP.)
The primary visual area is Brodmann area 17, located in the interior portion of the occipital lobe at the calcarine sulcus and sometimes continuing onto the surface of the lobe.
Although there are no anatomical markers distinguishing these areas (except for the prominent striations in the striate cortex), physiologists have used electrode recordings to divide the cortex into different functional regions.
http://www.answers.com/topic/occipital-lobe   (468 words)

  
 Extrastriate cortex - Wikipedia, the free encyclopedia
In primates, the extrastriate cortex includes visual area V2, visual area V3, Visual area V4, visual area MT (sometimes called V5), and visual area DP.
In terms of Brodmann areas, the extrastriate cortex comprises Brodmann area 18 and Brodmann area 19, while the striate cortex comprises Brodmann area 17.
The extrastriate cortex is the region of the occiptial cortex of the mammalian brain located next to the striate cortex (which is also known as the primary visual cortex).
http://en.wikipedia.org/wiki/Extrastriate   (164 words)

  
 Visual area V4 - Wikipedia, the free encyclopedia
V4 is the third cortical area in the ventral stream, receiving strong feedforward input from visual area V2, and sending strong connections to the posterior inferotemporal cortex (PIT).
It is located anterior to visual area V2, and posterior to visual area PIT, and comprises four separate regions (left and right V4d, left and right V4v).
Visual area V4 is not tuned for complex objects such as faces, as areas in the inferotemporal cortex are.
http://en.wikipedia.org/wiki/Visual_area_V4   (164 words)

  
 Occipital lobe
Primary visual cortex projects to the occipital areas of the ventral stream (visual area V2 and visual area V4), and the occipital areas of the dorsal stream (visual area V3, visual area MT (V5), and visual area DP.
It contains a low-level description of the local orientation, spatial-frequency and color properties within small receptive fields.
http://www.psychdaily.com/encyclopedia.php?term=Occipital+lobe   (468 words)

  
 Visual cortex - Wikipedia, the free encyclopedia
The dorsal stream begins with V1, goes through Visual area V2, then to Visual area V3, Visual area MT (also known as V5) and to the inferior parietal lobule.
V4 is the third cortical area in the ventral stream, receiving strong feedforward input from V2 and sending strong connections to the posterior inferotemporal cortex (PIT).
The dorsal stream, sometimes called the "Where Pathway" or the "How Pathway", is associated with motion, representation of object locations, and control of the eyes and arms, especially when visual information is used to guide saccades or reaching.
http://en.wikipedia.org/wiki/Visual_cortex   (2259 words)

  
 Visual Area V4 Encyclopedia Article, Definition, History, Biography
V4 is the third cortical area in the ventral stream, receiving strong feedforward input from V2 and sending strong connections to the posterior inferotemporal cortex (PIT).
Visual area V4 is one of the visual areas in the extrastriate visual cortex of the macaque monkey.
V4 is the first area in the ventral stream to show strong attentional modulation.
http://www.ourlocalcolor.com/encyclopedia/Visual_area_V4   (2252 words)

  
 Topographic patterns of V2 cortical connections in macaque monkeys.
Patterns of connections of dorsal and ventral portions of the second visual area (V2) were used to evaluate and extend current theories of cortical organization and processing streams in macaque monkeys.
Whereas the region would include parts of dorsal visual area 3 (V3), V3a, and possibly other areas of other proposals, we interpret the connection pattern as reflecting a dorsomedial visual area, DM, with foveal vision represented caudolaterally and other parts of the lower and upper quadrants represented more medially and rostrally.
The largest extrastriate connection zone was DLc, which occupied the caudal one-third to one-half of the fourth visual area (V4) region of other proposals.
http://brainmeta.com/neuroanat/a94.html   (320 words)

  
 Journal of Vision - Visual field representations and locations of visual areas V1/2/3 in human visual cortex, by Dougherty, Koch, Brewer, Fischer, Modersitzki, & Wandell
Visual areas V1, V2 and V3 are difficult to distinguish using fMRI in a region that represents the central visual field (1-2 deg).
The mean area between the 2-deg and 12-deg eccentricities for the primary visual areas was: V1: 1470 mm2; V2: 1115 mm2; and V3: 819 mm2.
Visual area locations were identified by fitting a quantitative model of the expected pattern of activation (the atlas) to the measured data.
http://www.journalofvision.org/3/10/1/article.aspx   (320 words)

  
 Dorsal stream - encyclopedia article about Dorsal stream.
The dorsal stream is a pathway for visual information which flows through the visual cortex The visual cortex is the general term applied to both the primary visual cortex (also known as "V1") and the visual association area (V2, V3, V4, V5).
The dorsal stream was first defined by Ungerleider and Mishkin (In: Ingle DJ, Goodale MA and Mansfield RJW (Editors), Analysis of Visual Behavior.
The dorsal stream (also known as the parietal stream or the "where" stream) stretches from the primary visual cortex (V1) in the occipital lobe The occipital lobes are the visual processing center of mammalian brains.
http://encyclopedia.thefreedictionary.com/dorsal+stream   (805 words)

  
 Visual area V2 - Wikipedia, the free encyclopedia
Recent research has shown that V2 cells are tuned to the orientation of illusory contours, shows a small amount of attentional modulation (more than V1, less than V4), are tuned for moderately complex patterns, and may be driven by multiple orientations at different subregions within a single receptive field.
It receives strong feedforward connections from Primary visual cortex (V1) and sends strong connections to Visual area V4 and Visual area MT.
Anatomically, V2 is split into four quadrants, a dorsal and ventral representation in the left and the right hemispheres.
http://en.wikipedia.org/wiki/Visual_area_V2   (805 words)

  
 Yoshioka Publications.
Levitt JB, Yoshioka T, Lund JS (1995) Connections between the pulvinar complex and cytochrome oxidase-defined compartments in visual area V2 of macaque monkey.
Yoshioka T (1989) Color and luminance organization in visual cortical areas V1, V2, and V4 of the macaque monkey.
Yoshioka T, Blasdel GG, Levitt JB, Lund JS (1992) Patterns of lateral connections in macaque visual area V1 revealed by biocytin histochemistry and functional imaging.
http://www.mb.jhu.edu/yoshioka/pubs.asp   (805 words)

  
 Encyclopedia: V3
The visual cortex is the general term applied to both the primary visual cortex (also known as V1) and the visual association area (V2, V3, V4, V5).
Station V3 Area V3 of the visual cortex
The Motorola V3 RAZR The Motorola RAZR V3 (RAZR pronounced razor), at 13.
http://www.nationmaster.com/encyclopedia/V3   (231 words)

  
 Papers
Olavarria,, J.F. and Van Essen, D.C. (1997) The global pattern of cytochrome oxidase stripes in visual area V2 of the macaque monkey.
J.W. Lewis and D.C. Van Essen 1996 Connections of visual area VIP with somatosensory and motor areas of the macaque monkey.
Marcus, D.S. and Van Essen, D.C. Neuronal responses to figure-ground stimuli in primate areas V1 and V2.
http://brainmap.wustl.edu/resources/papers.html   (231 words)

  
 Somatosensory cortex dominated by the representation of teeth in the naked mole-rat brain -- Catania and Remple 99 (8): 5692 -- Proceedings of the National Academy of Sciences
Total sensory cortex here was defined as cortex caudal to the rostral border of S1, which necessarily includes all visual cortex (V1 and V2), auditory cortex, and the secondary somatosensory area (S2) and parietal ventral somatosensory area (PV).
S1 takes up approximately 21% of the neocortex in rats and is located rostral to primary visual (V1) and auditory cortex (A1).
in caudal cortex were checked for visual responses.
http://www.pnas.org/cgi/content/full/99/8/5692   (231 words)

  
 Brain Control of Facial Muscles
On the other hand area prostriata, which directly abuts the peripheral representation of the primary visual field (V1) in the calcarine sulcus of the occipital lobe, is responsive to bright flashes of light (photic stimulation) and itself receives direct inputs from the peripheral visual representation of V1 and visual association area V2.
The limbic lobe and the amygdala are well known for their central roles in mediating emotional behavior.
If in fact the cerebral cortex plays a major role in the manifestation of blepharospasm, our observations indicate that the rostral cingulate motor cortex (M3) may contribute to the symptoms by conveying potentially altered cortical influence to the upper facial muscles.
http://www.blepharospasm.org/1999morecraft.html   (994 words)

  
 Visual cortex - Wikipedia, the free encyclopedia
V4 is the third cortical area in the ventral stream, receiving strong feedforward input from V2 and sending strong connections to the posterior inferotemporal cortex (PIT).
Visual area V4 is not tuned for complex objects such as faces, as areas in the inferotemporal cortex are.
The primary visual cortex is anatomically equivalent to Brodmann area 17, or BA17.
http://en.wikipedia.org/wiki/Visual_area_V4   (2259 words)

 About us   |  Why use us?   |  Press   |  Contact us

 Copyright © 2006 Medicow.com Usage implies agreement with terms.