Exploring Sensation and Perception

What is the process by which our senses receive and relay outside stimuli?

• Perception

• Sensation

• Adaptation

• Detection

How does perception differ from sensation?

• It is a bottom-up process

• It is a top-down process

• It involves only the sense of sight

• It does not involve the brain

What is the Absolute Threshold of sensation?

• The maximum stimulation needed to register a stimulus 50% of the time

• The minimum stimulation needed to register a stimulus 50% of the time

• The average stimulation needed to register a stimulus 50% of the time

• The minimum stimulation needed to register a stimulus 100% of the time

What example does Hank Green give to demonstrate Signal Detection Theory?

• A person noticing a mosquito bite

• Parents hearing their baby's tiny whimper but not a passing train

• A student hearing a teacher's voice in a noisy classroom

• A driver noticing a red light in heavy traffic

What is an example of sensory adaptation?

• Hearing a loud noise repeatedly

• Adjusting to the darkness in a bathroom

• Smelling a strong perfume continuously

• Tasting a sour lemon

What does Hank Green mean by perceiving differences on a "logarithmic, not linear scale"?

• We see differences based on absolute change

• We see differences based on percentage change

• We see differences based on color change

• We see differences based on time change

For light rays, what do short wavelengths correspond to?

• Redish colors

• Bluish colors

• Greenish colors

• Yellowish colors

For light rays, what does great amplitude correspond to?

• Dull colors

• Bright colors

• Dark colors

• Neutral colors

In the eye diagram, what structure is labeled as the "light blue" part?

• Pupil

• Cornea

• Lens

• Retina

How does the Trichromatic Color Vision Theory differ from the Opponent-Process Color Vision Theory?

• Trichromatic involves two colors, Opponent-Process involves three

• Trichromatic involves three colors, Opponent-Process involves opposing processes

• Trichromatic involves color mixing, Opponent-Process involves color separation

• Trichromatic involves color inhibition, Opponent-Process involves color activation