Download - Sensory systems 2
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PHYSIOLOGY DEPARTMENT
Ass. Prof. VASTYANOV Rooslan
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SENSORY SYSTEMS #2SENSORY SYSTEMS #2
PHYSIOLOGY OF VISION
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PLEASE,
MOBILESSHOULDBE OFF
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GENERAL STRUCTURE OF ANALYZERS
- RECEPTOR CELLSPERIFERAL PART
CONDUCTIVE PART
CENTRAL PART
- CONDUCTIVE WAYS
- Subcortical structures and cortical areas
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Eye Anatomy #1Muscles
Eye Anatomy #1Muscles
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Tear inflow and drainage Tear inflow
and drainage
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Eye Anatomy #2Blood supply
Eye Anatomy #2Blood supply
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Eye Anatomy #3Extrinsic eye muscles, cranial nerve innervation
and eyeball movement
Eye Anatomy #3Extrinsic eye muscles, cranial nerve innervation
and eyeball movement
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Eye Anatomy #4Transverse ViewEye Anatomy #4Transverse View
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Eye Anatomy #4Lens
Eye Anatomy #4Lens
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The inflow and drainage of an aqueous liquidThe inflow and drainage of an aqueous liquid
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The scheme of accommodationThe scheme of accommodation
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Accommodation occurs
by a reflex that has
three components:
Accommodation occurs
by a reflex that has
three components:
(i) Bulging the lens. Contraction of the ciliary muscles releases the tension of the zonular fibers. The elastic capsule surrounding the lens retracts, increasing the convexity (and thus the power) of the lens
(i) Bulging the lens. Contraction of the ciliary muscles releases the tension of the zonular fibers. The elastic capsule surrounding the lens retracts, increasing the convexity (and thus the power) of the lens
(ii) Pupillary constriction. By reducing the area through which light can enter the eye spherical aberration s reduced that follows by depth of the focusincreasing
(ii) Pupillary constriction. By reducing the area through which light can enter the eye spherical aberration s reduced that follows by depth of the focusincreasing
(iii) Eyes convergence in order to both eyes were focused on the object.(iii) Eyes convergence in order to both eyes were focused on the object.
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The function of the retina is to receive visual images, partially analyze them and transmit this modified
information to the brain.
The function of the retina is to receive visual images, partially analyze them and transmit this modified
information to the brain.
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Photosensor distribution, sensitivity in darkness and visual acuity of the retina
Photosensor distribution, sensitivity in darkness and visual acuity of the retina
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PHOTOSENSORSPHOTOSENSORS
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THE SCHEME OF CHAIN REACTION OF PHOTOSENSORS ACTIVATION IN LIGHT AND IN THE DARKNESS
THE SCHEME OF CHAIN REACTION OF PHOTOSENSORS ACTIVATION IN LIGHT AND IN THE DARKNESS
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THE SUMMARIZED SCHEME OF THE RODS ELECTRICALREACTIONS IN LIGHT AND IN THE DARKNESS
THE SUMMARIZED SCHEME OF THE RODS ELECTRICALREACTIONS IN LIGHT AND IN THE DARKNESS
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The Layers ofthe Retina
The Layers ofthe Retina
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The Pigment Layer of the Retina
The Pigment Layer of the Retina
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Optic System of the EyeOptic System of the Eye
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The schematized explanation of thespectrum nature
The schematized explanation of thespectrum nature
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The adequate stimulus for human visual receptors is light, which may be defined as electromagnetic radiation between the wave lengths
of 770 nm (red) and 380 nm (violet).
The adequate stimulus for human visual receptors is light, which may be defined as electromagnetic radiation between the wave lengths
of 770 nm (red) and 380 nm (violet).
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Rods and cones physiological
sensitivity
Rods and cones physiological
sensitivity
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The scheme illustrating some fundamental optic principles
The scheme illustrating some fundamental optic principles
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The schemes illustrating normal eye refraction (a)
myopia (b) and hypermetropia (c)
The schemes illustrating normal eye refraction (a)
myopia (b) and hypermetropia (c)
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THE SCHEME OF THE VISUAL PATHWAY AND VISUAL FIELD DEFICITS
THE SCHEME OF THE VISUAL PATHWAY AND VISUAL FIELD DEFICITS
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CORTICAL LOCALIZATION OF THE VISUAL, VISUAL ASSOCIATION, AUDITORY AND
AUDITORY ASSOCIATION AREAS (lateral view)
CORTICAL LOCALIZATION OF THE VISUAL, VISUAL ASSOCIATION, AUDITORY AND
AUDITORY ASSOCIATION AREAS (lateral view)
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