lecture 8: depth perception

What is the term for the ability to perceive depth using the different views from our two eyes?

Stereopsis.

What does retinal disparity refer to?

The differences in the images seen by the left and right eyes that help in depth perception.

What is Emmert's Law?

A principle stating that images of the same retinal size will appear different sizes when located at different distances.

What is motion parallax in relation to depth perception?

The phenomenon where objects closer to us move faster across our field of vision than objects that are farther away.

What are random dot stereograms used for?

They are patterns of random dots where a portion is shifted to create retinal disparity, allowing depth perception in the absence of traditional cues.

What are pictorial cues to depth?

Visual signals that help us perceive depth in images without any stereo or motion cues, such as interposition, height, and perspective.

What happens in the brain when processing visual disparity?

Disparity-sensitive cells in area V1 process the information from both eyes after it diverges at the level of the LGN.

What is stereoblindness?

A condition affecting about 10% of the population where individuals have difficulty perceiving depth due to improper processing of stereo cues.

What is the effect of distance on perceived size according to Emmert's Law?

As distance increases, an object's retinal image decreases, leading to perceptions of varying size.

What is one example of an illusion caused by misplaced depth?

The Ponzo illusion, where two lines of the same size appear different due to depth cues.