Define a visual cue .

A visual cue is any environmental stimulus which gives humans information about the spatial dimensions, movement, distance and proximity of objects and people in the visual field.

Define monocular depth cues .

Monocular depth cues are those which allow someone to judge distance and depth using only one eye .

Relative size : the further away an object is from the viewer, the it appears in the visual field.

Relative size : the further away an object is from the viewer, the smaller it appears in the visual field.

Define linear perspective .

Linear perspective occurs when parallel lines , such as those on a railway track, appear to converge in the distance .

True or False? Height in plane means that objects higher up in the visual field appear closer to the viewer.

False. Objects or people who are higher up in the visual field appear to be further away from the viewer.

Occlusion is when one object or person is obscured by another , so it appears further away in the visual field.

Define visual constancy .

Visual constancy is the ability to understand that objects remain the same size even though they may appear smaller or larger depending on where they are in the visual field.

Define binocular depth cues .

Binocular depth cues are those which require both eyes working together . Because our eyes are around 6 cm apart , each eye receives a slightly different view of the world.

Which one of the following is not a monocular depth cue? a) Linear perspective b) Retinal disparity c) Occlusion

b. Retinal disparity is a binocular depth cue, as it requires both eyes.

Define retinal disparity .

Retinal disparity is the difference between the images received by the left and right retina — ‘disparity’ means difference .

True or False? The bigger the difference between the images received by each retina, the further away the object is.

False. The bigger the difference, the closer the object. The smaller the difference, the further away it is.

How can you demonstrate retinal disparity using your finger?

Hold a finger close to your face and close one eye, then the other — the finger appears to jump position . Do the same with a distant object and it barely moves .

Convergence is the inward movement of the eyes as they focus on an object that is close to us — ‘converge’ means come together .

How does convergence give the brain information about distance ?

The muscles controlling the eyes work harder to turn them inward for a nearby object, and relax for a distant one. The brain uses this muscle feedback : more muscle tension means a closer object .

How can you demonstrate convergence ?

Watch someone follow their own finger as it moves towards their nose — their pupils move towards the middle , so they go ‘ cross-eyed ’.

GCSEPsychologyAQAFlashcardsPerceptionVisual Cues & Constancies

Visual Cues & Constancies (AQA GCSE Psychology): Flashcards

Exam code: 8182

1/15

0Still learning

Know0

FrontVisual Cues & Constancies: Depth Cues
Define a visual cue.

Was this flashcard helpful?

Cards in this collection (15)

Define a visual cue.
A visual cue is any environmental stimulus which gives humans information about the spatial dimensions, movement, distance and proximity of objects and people in the visual field.
Define monocular depth cues.
Monocular depth cues are those which allow someone to judge distance and depth using only one eye.
Relative size: the further away an object is from the viewer, the it appears in the visual field.
Relative size: the further away an object is from the viewer, the smaller it appears in the visual field.
Define linear perspective.
Linear perspective occurs when parallel lines, such as those on a railway track, appear to converge in the distance.
True or False?
Height in plane means that objects higher up in the visual field appear closer to the viewer.
False.
Objects or people who are higher up in the visual field appear to be further away from the viewer.
What is occlusion?
Occlusion is when one object or person is obscured by another, so it appears further away in the visual field.
Define visual constancy.
Visual constancy is the ability to understand that objects remain the same size even though they may appear smaller or larger depending on where they are in the visual field.
Define binocular depth cues.
Binocular depth cues are those which require both eyes working together. Because our eyes are around 6 cm apart, each eye receives a slightly different view of the world.
Which one of the following is not a monocular depth cue?
a) Linear perspective
b) Retinal disparity
c) Occlusion
b.
Retinal disparity is a binocular depth cue, as it requires both eyes.
Define retinal disparity.
Retinal disparity is the difference between the images received by the left and right retina — ‘disparity’ means difference.
True or False?
The bigger the difference between the images received by each retina, the further away the object is.
False.
The bigger the difference, the closer the object. The smaller the difference, the further away it is.
How can you demonstrate retinal disparity using your finger?
Hold a finger close to your face and close one eye, then the other — the finger appears to jump position. Do the same with a distant object and it barely moves.
Define convergence.
Convergence is the inward movement of the eyes as they focus on an object that is close to us — ‘converge’ means come together.
How does convergence give the brain information about distance?
The muscles controlling the eyes work harder to turn them inward for a nearby object, and relax for a distant one. The brain uses this muscle feedback: more muscle tension means a closer object.
How can you demonstrate convergence?
Watch someone follow their own finger as it moves towards their nose — their pupils move towards the middle, so they go ‘cross-eyed’.

Sign up to unlock flashcards

By signing up you agree to our Terms and Privacy Policy

Previous:Sensation & PerceptionNext:Visual Illusions