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The monocular depth cue in which there is an apparent convergence of parallel lines as they receed into the distance
A monocular depth perception cue that occurs when one object partially covers another, the partially obscured object is percieved as furthur away
Height in the visual field
The monocular depth cue which Refers to the location of objects in our visual field, whereby objects closer to the horizon are percieved as more distant then objects located further away
The monocular depth cue in which the gradual diminishing of detail that occurs in a surface the further away they are compared to objects in the visual field that are closer and are seen in fine detail
The monocular depth cue in which the tendency to visually percieve the object that produces the largest retinal image is closer and the object with a smaller retinal image as being further away. Provided the object is expected to be roughly the same size
Tendency to percieve an object as maintaining its dimentions despite the change in the image cast upon the retina
Tendency to percieve an object as maintaining its normal configuration despite the change in the image cast upon the retina
Tendency to percieve an object as maintaining its brilliance in comparasion to its surroundings despite the change in the image cast upon the retina unless the ratio of light is changed.
Tendency to percieve an object as in its true position in the environment despite the change in the image cast upon the retina
a gestalt principle where visual stimuli that are close in distance to one another are percieve to belong together forming a meaningful whole
Detecting, sorting and isolating of particular features such as size, colour & movement.
Differential threshold/ JND
In vision it is the smallest percebtible difference that can be seen between 2 visual stimuli 50% of the time
Photoreceptor cells which enable peripheral and night vision. 125 million in each eye.
A gestalt principle which involves the tendency to mentally fill in gaps of incomplete visual stimulus to percieve it as a meaningful whole
Sensory information detected by the visual receptors and transmitted to the brain are assigned meanings
Is when an objective reality of an existing physical stimulus consistently conflicts with ones perception
In vision it ia the minimum amount of light energy that is required for a visual stimuli to be percieved 50% of the time.
A small region of the retina which contains no photoreceptors and is where the optic nerve leaves the eye
A gestalt principle whereby visual stimuli that are alike in size, shape, colour or form are percieved as belonging together and are grouped to form a meaningful whole
A small area at the centre of the retina existing solely of cones where the lens focuses to give the sharpest image. Visual acuity during daylight or bright conditions.
The process of sending and recieving visual stimuli in the form of electrochemical energy from neuron to neuron along neural pathways to the visual cortex in the brain
Photoreceptor cells enabling the perception of colour, acuity, bright light, and daytime vision
The narrow band of electromagnetic energy which the human eye can detect. It is 380-760 nanometres
Optic chiasma the point at which the optic nerves from each eye respectively cross over on the way to the visual cortex
The reassembling of elements or features of visual information in a meaningful way that can be interpretated.
The process by which the structures of an eye capture an image of a visual stimulus and focus it on the photoreceptors contained in the retina
A binocular primary depth cue involving the changing in the tention of eyemuscles as the eye turns inwards to focus on objects closeby and then is relieved of the tentiin when focusing on objects far away. Within the limit of 6m
A monocular primary depth cue involving the lens of an eye to buldge to buldge when focusing on an object nearby. And the lens to elongate to focus on objects further away. Within 1.5m.
An image that can be percieved as two different ways by shifting ones attention
Ames Room Illusion
A deliberately distorted room that appears normal when viewed through a peephole. One tends to see people shrink or grow as they move across the room this is due to size constany maintained over shape constancy.
- 1) trapezoidal shape
- 2) left corner is twice the distance from the observer then the right corner
- 3)the ceiling slopes towards the right side of the Ames Room
- 4) A peephole is used so binocular depth cues cannot be used
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