VISUAL SYSTEM OVERVIEW OF THE EYE RETINA AND ITS PHOTORECEPTORS RECEPTIVE FIELDS FOR GANGLION CELLS CENTRAL VISUAL PATH

Apr 13, 2012

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VISUAL SYSTEM OVERVIEW OF THE EYE RETINA AND ITS PHOTORECEPTORS RECEPTIVE FIELDS FOR GANGLION CELLS CENTRAL VISUAL PATH

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Visual Fields

Visual Fields. KW 8-20. Fovea on Cortex. KW 8-22. Occipital Lobes are Independent. KW 8-24. Visual Areas. Areas V1 – V5. KW 8-17. Visual Cortex. Receptive Fields. Figure 6.16 Receptive fields

676 views • 28 slides

The Visual System and Visual Performance

The Visual System and Visual Performance. The Visible Spectrum. Anatomy of the Eye. Illustration by Mark Ericksen, St. Luke’s Cataract and Laser Center, StLukesEye.com. The Eye (2). Cornea Protection Focusing Aqueous Humor Shape Nutrition Iris Light control Focusing. The Eye (3).

837 views • 52 slides

The Visual System: The Structure of the Visual System

The Visual System: The Structure of the Visual System. Cornea. The clear bulge on the front of the eyeball Begins to focus the light by bending it toward a central focal point Protects the eye. Parts of the Eye – Cornea. Iris.

762 views • 45 slides

Visual System I – Central Visual Pathways

Visual System I – Central Visual Pathways. I. Optic nerve and tract - Axons in the optic nerve cross at the optic chiasm so that each optic tract represents the contralateral visual field - There are three major visual pathways:

439 views • 12 slides

Photoreceptors and Retina

Photoreceptors and Retina. • The retina is an outgrowth of the prosencephalon , beginning as primary optic vesicles, forming optic cups, and ultimately having a pigment epithelium and neural retina separated by a subretinal space. .

666 views • 37 slides

Photoreceptors and Retina

Photoreceptors and Retina. I. Structure of retina - The retina is composed of three main layers 1) Outer nuclear layer: photoreceptors, no direct blood supply 2) Inner nuclear layer: bipolar, horizontal, amacrine , Mueller glial cell bodies .

890 views • 16 slides

Visual Fields

Visual Fields. Constrictor pupillae muscle. Damage to Right CNII: Right direct response Left consensual response Left direct response Right consensual response Damage to Right CNIII: Right direct response Left consensual response Left direct response Left consensual response.

193 views • 6 slides

Receptive Fields in Primate Retina: coordinated to sample visual space more uniformly

Receptive Fields in Primate Retina: coordinated to sample visual space more uniformly. A study by Dr. E.J. Chichilnisky, Systems Neurobiology Laboratories at the Salk Institute, La Jolla, CA Presented by: Sarah-Nicole Bostan Psychology 159. Abstract.

296 views • 16 slides

Historical Overview of Visual System Neurophysiology

Historical Overview of Visual System Neurophysiology. Ascending branch. Descending branch. Start in the middle. focus on form vision. Kuffler, Barlow, Hartline. Gross, Mishkin. Hubel,Wiesel. Rolls, perrett. Campbell,Robson, DeValois. Zeki, Cowey. Tanaka. Tolhurst,Movshon, Thompson.

434 views • 33 slides

The Visual System: From Eye to Cortex

The Visual System: From Eye to Cortex. Ch. 6. Outline. The Eye The Retina Visual Transduction by Rhodopsin From Retina to Primary Visual Cortex. The Eyes. Structure : review the major structures of the eye (diagram given in class)

489 views • 32 slides

VISUAL SYSTEM Key points Relations of neural retina to other structures in the eye

VISUAL SYSTEM Key points Relations of neural retina to other structures in the eye Knowledge of types of photoreceptor and their distribution across the retina Foveal versus peripheral retina Knowledge of the different cell types that make up the retina

390 views • 24 slides

The Central Visual System

The Central Visual System. Transduction. Photoreceptors release the neurotransmitter glutamate (glu) when depolarized. Depolarized in the dark. Hyperpolarized by light. Only ganglion cells have action potentials.

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Receptive Field Mosaics of Parasol and Midget Ganglion Cells in the Primate Retina

Receptive Field Mosaics of Parasol and Midget Ganglion Cells in the Primate Retina. Jeff Gauthier, PhD student Computational Neurobiology, UC-San Diego E.J. Chichilnisky’s lab, Salk Institute, San Diego, CA. Research Groups. E.J. Chichinlisky Salk Institute. Alan Litke UC-Santa Cruz.

535 views • 30 slides

The Visual System: Central Processing

The Visual System: Central Processing. Edge Detection. The most effective way to alter the firing rate of an on-center (or off-center) ganglion cell is to completely illuminate either the “on area” or the “off area” of its receptive field. Retina to Primary Visual Cortex.

443 views • 15 slides

Ganglion cell receptive fields

Ganglion cell receptive fields. Thick Stripes. Thin Stripes. Layers II, III Blob. Layers II, III Inter-blob. Layer IVB. Layer IVC β. Layer IVC α. Magnocellular. Parvocellular. M-type. P-type. La. Pale Stripes (interstripes). V2. V1. LGN. Retina.

295 views • 11 slides

Visual Fields

Visual Fields. KW 8-20. Fovea on Cortex. KW 8-22. Occipital Lobes are Independent. KW 8-24. Visual Areas. Areas V1 – V5. KW 8-17. Visual Cortex. Receptive Fields. Figure 6.16 Receptive fields

326 views • 28 slides

Visual fields for General Practice

Visual fields for General Practice. Dr Mark Donaldson. Introduction. This is a presentation designed to give you a feel for the place of the visual field test in current glaucoma management and a taste of how these modern tests might work in the primary care setting.

810 views • 32 slides

The Visual System: From Eye to Cortex

284 views • 27 slides

The Visual System and Visual Performance

591 views • 52 slides

The Central Visual System

237 views • 21 slides

The Visual System

The Visual System. Anatomy of the eye. Anatomy of the eye. Anatomy of the eye. Anatomy of the eye. Anatomy of the eye. Intraocular Fluid. Intraocular Fluid. Glaucoma. Retina. Pigmented layer Photoreceptors Bipolar cells Ganglion cells Horizontal cell Amacrine cell. Photoreceptors.

391 views • 33 slides

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