Visual perception

The smallest difference between two stimuli that can be detected 50% of the time is called

• absolute threshold
• difference threshold
• sensory adaptation
• subliminal perception

Which of the following processes has begun as soon as special receptor cells for the senses are activated?

• perception
• adaptation
• habituation
• sensation

The minimum amount of energy needed for a stimulus to be perceived

• absolute threshold

• psychological equation

• just noticeable difference

• Weber effect

What does farsighted mean?

• You can see far away well.

• You can see close up well.

• You can see into the future.

• You are blind.

What part of your eye sends the messages to and from your brain?

• retina
• optic nerve
• iris
• vitreous humor

What is the protective covering over your eye?

• refraction
• cornea
• puppies
• eyeballs

What is the hole that lets light into the eye?

• Pupil
• Eyelashes
• Farsighted
• Opaque

What is the muscle that opens and closes the pupil?

• food
• transluscent
• iris
• lens

What is the part of your eye that helps you focus?

• iris
• optic nerve
• brain
• lens

Which is True?

• There are an equal number of rods and cones. Cones detect black and white

• there are an equal number of rods and cones. Rods detect Black and White

• there are more cones than rods and cones detect black and white

• There are more rods than cones and rods detect black and white