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Topic: Ocular dominance column

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	Dominance frontier (Site not responding. Last check: 2007-11-06)
		dominance of and eye dominance and this is the best resource on female dominance related to apical dominance and social dominance is and dominance includes law of dominance is the same as white dominancestochastic dominance.
		What's dominance in the of the dominance is the same as ocular dominance columndominance over dog dominance, co dominance cannot be air dominance.
		More information on the dominance of the, in dominance depends entirely on right dominance and this is the best resource on dominance to and topics related to what is dominance, a dominance needs dominance column is focused on apical dominance in, dominance inventory or lateral dominance.
	www.bd127.com /dominance/dominance-frontier.html (644 words)

	Development of ocular dominance columns in the absence of retinal input - Nature Neuroscience
		The initial establishment of ocular dominance columns in visual cortex is believed to involve the segregation of overlapping geniculocortical axons into eye-specific patches based on patterns of correlated activity.
		We therefore propose that, unlike ocular dominance plasticity during the critical period, the initial establishment of ocular dominance columns relies primarily on activity-independent cues, rather than on specific patterns of correlated activity.
		As an alternative to correlation-based models for ocular dominance development, we propose that axons arising from each LGN layer are molecularly distinct, and that interaction with corresponding cortical cues determines the termination pattern of each set of axons.
	www.nature.com /neuro/journal/v2/n12/full/nn1299_1125.html (4598 words)

	CV/CNS::publications
		Topographic shear and the relation of ocular dominance columns to orientation columns in primate and cat visual cortex.
		An ocular dominance column map as a data structure for stereo segmentation.
		Topographic shear and the relationship of ocular dominance columns to orientation columns in monkey and cat visual cortex.
	eslab.bu.edu /publications/publications.php (2816 words)

	Ocular dominance (Site not responding. Last check: 2007-11-06)
		Purchase social dominance theory, dominance of the (sexual dominance) of estrogen dominance and the dominance of creates the need for estrogen dominance and and best dominance definition, mixed dominance is field dominance is spectrum dominance features.
		full spectrum dominance is required by sexual dominance and details of dominance symptoms, cross dominance, dominance columns, right brain dominance is the same as ocular dominanceleft brain dominance for dominance.
		Purchase f 22 air dominance fighter or the dominance of the, in dominance.
	www.bd127.com /dominance/ocular-dominance.html (600 words)

	Horton LVN (Site not responding. Last check: 2007-11-06)
		I discovered that the pattern of blood vessels in the eye is mimicked in the appearance of ocular dominance columns.
		Ocular dominance columns were present in some individual squirrel monkeys in our study, but absent in many others.
		The function of ocular dominance columns has been sought for more than 30 years, yet no theory has even reached the level of general acceptance.
	www.ucsf.edu /hortonlab/dan.html (538 words)

	Journal of Vision - Quantitative comparison of ocular dominance column width in optical images, by Ua Cruadhlaoich ...
		(1995) had claimed that ocular dominance column width is affected by abnormal visual experiences such as strabismus or amblyopia.
		Horton and Hocking (1996) subsequently placed these claims into question by demonstrating that there is significant normal variability in the width of ocular dominance columns, both across individuals and with respect to eccentricity.
		Mean ocular dominance column width was quantified for a large body of optical images from normal adults of three species of macaque monkey, Macaca fascicularis, Macaca mulatta, and Macaca nemestrina, and two visual eccentricity groups, 1º to 3º and 5º to 10º.
	www.journalofvision.org /2/7/17 (316 words)

	Receptive Fields and Maps in the Visual Cortex: Models of Ocular Dominance and Orientation Columns - fields, the, ... (Site not responding. Last check: 2007-11-06)
		Receptive fields and maps in the visual cortex:Models of ocular dominance and orientation columns.
		32 Models of orientation and ocular dominance columns in the vi..
		5 Ocular dominance in layer IV of the cat's visual cortex and..
	citeseer.lcs.mit.edu /1130.html (1066 words)

	Rapid regulation of brain-derived neurotrophic factor mRNA within eye-specific circuits during ocular dominance column ...
		Dark-rearing throughout the critical period for ocular dominance column formation decreases levels of BDNF mRNA within primary visual cortex, whereas short-term (2 d) binocular blockade of retinal activity with tetrodotoxin (TTX) downregulates BDNF mRNA within the lateral geniculate nucleus (LGN) and visual cortical areas.
		Brief (6 hr to 2 d) monocular TTX blockade during the critical period and also in adulthood causes downregulation in appropriate eye-specific laminae in the LGN and ocular dominance columns within primary visual cortex.
		In contrast, 10 d monocular TTX during the critical period does not cause a lasting decrease in BDNF mRNA expression in columns pertaining to the treated eye, consistent with the nearly complete shift in physiological response properties of cortical neurons in favor of the unmanipulated eye known to result from long-term monocular deprivation.
	www.arclab.org /medlineupdates/abstract_10662837.html (287 words)

	ECS EPrints Service - Dissociating ocular dominance column development and ocular dominance plasticity: a neurotrophic ... (Site not responding. Last check: 2007-11-06)
		Recent experimental data indicate that both neurotrophic factors (NTFs) and intracortical inhibitory circuitry are implicated in the development and plasticity of ocular dominance columns.
		We extend a neurotrophic model of developmental synaptic plasticity, which previously failed to account correctly for the differences between monocular deprivation and binocular deprivation, and show that the inclusion of lateral cortical inhibition is indeed necessary in understanding the effects of visual deprivation in the model.
		We thus postulate that the response to visual deprivation is at the level of the cortical circuit, while the mechanisms of afferent segregation are at the molecular or cellular level.
	eprints.ecs.soton.ac.uk /7872 (248 words)

	Subplate neuron ablation alters neurotrophin expression and ocular dominance column formation -- Lein et al. 96 (23): ...
		Ocular dominance column formation in visual cortex depends on both the presence of subplate neurons and the endogenous expression
		Ocular dominance columns in the visual cortex of higher mammals form as axons from the lateral geniculate nucleus (LGN), representing
		The region lacking ocular dominance columns corresponds to the region in which BDNF mRNA levels are persistently increased even at this older age (arrows).
	www.pnas.org /cgi/content/full/96/23/13491 (3538 words)

	Ocular Dominance (Site not responding. Last check: 2007-11-06)
		To put it simply, this page is simply stuffed with ocular dominance insights that you will die to find on the rest of the other websites.
		:: ipsi- and contralateral ocular dominance patterns are not at all complementary.
		Ocular dominance shift in kitten visual cortex caused by imbalance ::
	lasiksurgery.lasiksurgerycases.info /8/ocular-dominance.php (575 words)

	In: Computational Neuroanatomy: Principles and Methods (G. A. Ascoli, ed.), (ResearchIndex) (Site not responding. Last check: 2007-11-06)
		The best studied of these are the maps of features such as ocular dominance and orientation in primary visual cortex (V1).
		14 Geometry of orientation and ocular dominance columns in monk..
		1 Sequential bifurcation of orientationand ocular dominance ma..
	citeseer.csail.mit.edu /677915.html (1132 words)

	Establishment of Patterned Thalamocortical Connections Does Not Require Nitric Oxide Synthase -- Finney and Shatz 18 ...
		and ocular dominance columns are clearly evident in layer 4.
		LeVay S, Stryker MP, Shatz CJ (1978) Ocular dominance columns and their development in layer 4 of the cat's visual cortex: a quantitative study.
		Stryker MP, Strickland SL (1984) Physiological segregation of ocular dominance columns depends on the pattern of afferent electrical activity.
	www.jneurosci.org /cgi/content/full/18/21/8826 (8126 words)

	Segregation of geniculocortical afferents during the critical period: a role for subplate neurons.
		To investigate the cellular interactions within the mammalian visual cortex that are important in ocular dominance column formation, we have examined the role of subplate neurons in this process.
		LGN axons segregate in layer 4 of the cat's visual cortex between the third and sixth postnatal weeks to give rise to the adult pattern of ocular dominance columns.
		Although the mechanisms by which subplate neurons exert their effect are not yet clear, these experiments strongly suggest that interactions between LGN axons and layer 4 neurons are not sufficient for column formation, and that subplate neurons most likely play a critical role in interactions leading to ocular segregation.
	www.arclab.org /medlineupdates/abstract_8207493.html (344 words)

	[No title] (Site not responding. Last check: 2007-11-06)
		Two days of MD are sufficient to cause a robust and saturating physiological plasticity as demonstrated by the loss of responsiveness of primary visual cortical neurons to deprived eye visual stimulation.
		Experiments from the laboratory of Lamberto Maffei have shown that infusion of NGF into the lateral ventricle attenuates or blocks the plasticity induced by MD. Using osmotic minipumps, I have infused NGF locally directly into primary visual cortex or the basal forebrain to determine whether these brain regions are involved in mediating NGF's effects.
		Ocular dominance plasticity has been assessed by single unit electrophysiology and intrinsic signal optical imaging.
	www.kyb.tuebingen.mpg.de /misc/friko/archive/MichaelSilver.txt (382 words)

	Elastic Net Tutorial
		Their spacing can emphasize one feature or another: maps corresponding to features that are assigned larger distances develops earlier and the spatial distribution of the maps is affected accordingly.
		The bottom map is am ocular dominance map, where areas stimulated by one eye are white and areas stimulated by the other eye are fl.
		Black histograms are from three different cats; gray histograms are computed by overlaying an orientation map from one cat with an ocular dominance map from another cat.If the two maps come from the same animal, there is a significant bias towards90 degrees, otherwise, histograms are nearly flat.
	camelot.mssm.edu /~andrei/elastic_net_tutorial/elastic_net_tutorial.htm (829 words)

	Ocular Dominance Column Width and Contrast Sensitivity in Monkeys Reared with Strabismus or Anisometropia -- Crawford ...
		Ocular Dominance Column Width and Contrast Sensitivity in Monkeys Reared with Strabismus or Anisometropia -- Crawford and Harwerth 45 (9): 3036 -- Investigative Ophthalmology & Visual Science
		Articles by Crawford, M. Articles by Harwerth, R. Ocular Dominance Column Width and Contrast Sensitivity in Monkeys Reared with Strabismus or Anisometropia
		dominance columns in primary visual cortex and spatial contrast
	www.iovs.org /cgi/content/abstract/45/9/3036 (268 words)

	Rapid Regulation of Brain-Derived Neurotrophic Factor mRNA within Eye-Specific Circuits during Ocular Dominance Column ...
		Anderson PA, Olavarria J, Van Sluyters RC (1988) The overall pattern of ocular dominance bands in cat visual cortex.
		LeVay S, Stryker MP, Shatz CJ (1978) Ocular dominance columns and their development in layer IV of the cat's visual cortex: a quantitative study.
		Shatz CJ, Stryker MP (1978) Ocular dominance in layer IV of the cat's visual cortex and the effects of monocular deprivation.
	www.jneurosci.org /cgi/content/full/20/4/1470 (8039 words)

	Kenneth D. Miller Research Interests (Site not responding. Last check: 2007-11-06)
		More recently we have addressed the combined development of ocular dominance and orientation selectivity, showing how the orientation preferences of the two eyes can become matched despite the tendency of the two eyes to segregate from one another.
		While this focuses only on the ocular dominance model, the mathematics of the orientation model is identical.
		See also Wimbauer et al., 1997a and 1997b, in which this same formal model is used to study the development of direction selectivity in oriented simple cells through competition of lagged and non-lagged inputs.
	neurotheory.columbia.edu /~ken/miller.htm (2866 words)

	Reasoning Errors In The Current Models of Human Cognition
		These are not realy columns, they are stripes.
		Since a person with a single eye doesn't have these "columns", but is able to see the world almost as well a two-eyed person, these "columns" cannot have much significance in vision in general.
		A point worth mentioning is that the pattern of the stripes is variable between individuals, a fact that is rarely mentioned when ocular dominance columns are discussed.
	www.human-brain.org /errors.html (11784 words)

	Answers to Homework #5
		It has an ocular dominance column which contains input exclusively from the right eye for all orientations of the light stimulus, next to an ocular dominance column which contains input exclusively from the left eye for all orientations of the light stimulus.
		The hypercolumn spans the depth of the gray matter within the visual cortex, the six layers of input and output.
		The column is about 2mm x 1mm x 1mm in volume.
	departments.oxy.edu /biology/linden/bio333/hmwk5answers.html (859 words)

	[No title] (Site not responding. Last check: 2007-11-06)
		The “pinwheel” pattern of ocular dominance columns in visual cortex is hard to visualize.
		When a stimulus is presented (Start stimulus at left), only the columns corresponding to that orientation are shown.
		Covering an eye removes that ocular dominance column; decentering the stimulus moves to a different set of hypercolumns.
	www.oup.co.uk /best.textbooks/psychology/levine/samples/screen08 (112 words)

	[No title] (Site not responding. Last check: 2007-11-06)
		An oriented (anisotropic) bandpass filter followed by a threshold operation models the macaque ocular dominance column pattern and cat orientation column system.
		An unoriented (isotropic) bandpass filter models the cat ocular dominance column pattern and the macaque orientation column system.
		Since this algorithm is very fast, it has been possible to explore its parameter space extensively in order to determine filter parameters which closely match the structure of the various cortical systems.
	eslab.bu.edu /publications/articles/1990/rojer1990cat.bib (104 words)

	DAI Database: MSc Thesis #92102 (Site not responding. Last check: 2007-11-06)
		In this project a mathematical model of ocular dominance column development proposed by [Miller et al 89] was implemented.
		Recent theoretical analysis of Miller's model presented by [Dayan & Goodhill 92, Goodhill 91] suggests that by using more realistic correlations, a failure to simulate ocular dominance can be produced in Miller's model.
		In this project empirical exploration of the parameter space of the model is made.
	www.dai.ed.ac.uk /papers/documents/mt92102.html (152 words)

	Shatz Lab Publications (Site not responding. Last check: 2007-11-06)
		Lein, E.S. and Shatz, C.J. Rapid regulation of BDNF mRNA within eye-specific circuits during ocular dominance column formation, J. Neurosci.
		Lein, E.S., Finney, E.M., McQuillen, P.S. and Shatz, C.J. Subplate neuron ablation alters neurotrophin expression and ocular dominance column formation., PNAS 96: 13491-13495.
		Cabelli, R.J., Shelton, D.L., Segal, R.A., and Shatz, C.J. Blockade of endogenous ligands of TrkB inhibits ocular dominance column formation.
	neuro.med.harvard.edu /site/Shatzweb/publications.htm (569 words)

	Geoff Goodhill - Publications (Site not responding. Last check: 2007-11-06)
		Goodhill, G.J. The influence of neural activity and intracortical connections on the periodicity of ocular dominance stripes.
		Goodhill, G.J. & Cimponeriu, A. Staging of orientaion and ocular dominance column development in primary visual cortex and its consequences for map structure.
		Bates, K., Goodhill, G.J., Assad, J. & Montague, P.R. A theoretical study of the influence of correlated activity on the global structure of ocular dominance stripes.
	www.cns.georgetown.edu /~geoff/pubs.html (1259 words)

	On Demand Newsletter Jan 2003
		If one eye is not used during this critical period of visual cortex development, neurons in the ocular dominance column that should receive visual information from the unused eye do not develop normally, and instead become wired to the normal eye.
		Armed with knowledge of ocular dominance columns and the critical period of visual cortex development, doctors now treat strabismus early in life, well before age four, when normal vision can be restored.
		When one eye is deprived of sensory information, the columns from the deprived eye shrink and the connections of the normal eye take over more than their fair share of territory, resulting in permanent visual impairment.
	www.crossroadsinstitute.org /newsletter/jan03.html (13066 words)

	Whitman Richards - Migraine Aura
		It became of interest to establish a geometrical relationship between the iso-orientation domains and precise description of the migraine aura were hoped to provide first hints to this important question of cortical organization.
		Cortical column vertical arrangement (not necessarily of circular shape) of neurons that have similar response properties.
		Carreira-Perpiñán (2002): "In many regions of the cortex, neuronal response properties remain relatively constant as one moves perpendicular to the surface of the cortex, while they vary in a direction parallel to the cortex.
	www.migraine-aura.org /EN/Whitman_Richards.html (298 words)

	Amiram Grinvald's Laboratory
		High resolution imaging of ocular dominance column based on intrinsic signals.
		Organization of orientation and ocular dominance columns in the primate primary visual cortex.
		1) Black and white regions are columns of neurons that receive inputs from the left and right eye respectively.
	www.weizmann.ac.il /brain/grinvald/html/image_gallery.html (743 words)

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