Trichromacy Theory and Cone Receptors

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What is one of the main reasons why color vision has developed?

To improve depth perception

To distinguish figure from ground (correct)

To enhance visual illusions

To aid in visually guided action

What are the three main qualities associated with color perception?

Hue, luminosity, tint

Tone, luminance, contrast

Hue, brightness, saturation (correct)

Tint, darkness, vibrance

According to Milner and Goodale, which system provides accurate information about our position relative to objects?

Color perception system

Depth perception system

Vision-for-perception system

Vision-for-action system (correct)

Which illusion involves the perception that the central circle surrounded by smaller circles looks bigger than a central circle surrounded by larger circles?

Ebbinghaus illusion Signup and view all the answers

What is the perceived intensity of light called in color vision?

Brightness Signup and view all the answers

How do visual illusions impact the task of making coherent sense of visual perception findings?

They complicate the interpretation Signup and view all the answers

Which brain hemisphere receives signals from the outer halves of each retina?

The hemisphere on the same side Signup and view all the answers

Which pathway is mainly concerned with form, color processing, and object recognition?

Ventral pathway Signup and view all the answers

What does the Parvocellular (or P) pathway specialize in?

Color and fine detail sensitivity Signup and view all the answers

How are the ventral and dorsal pathways interconnected?

Interconnected with numerous connections Signup and view all the answers

According to Zeki's functional specialization theory, what does it propose about different cortical areas?

They are specialized for different visual functions Signup and view all the answers

Which tract contains signals from the left half of each eye?

Dorsal tract Signup and view all the answers

Which type of light generally responds most to stimuli perceived as blue according to the trichromatic theory?

Short-wavelength light Signup and view all the answers

In dichromacy, what is deficient in color vision?

Absence of one cone class Signup and view all the answers

What is a negative afterimage?

Perception of a color opposite to the one just seen Signup and view all the answers

Which theory combines ideas from trichromatic theory and depth perception cues?

Hurvich and Jameson's dual-process theory Signup and view all the answers

What kind of cues to depth can be used by one eye or both eyes together?

Monocular cues Signup and view all the answers

Which cones combine their activity in the achromatic (non-color) channel?

Medium-wavelength and long-wavelength cones Signup and view all the answers

What does the blue-yellow channel represent?

Sum of medium and long-wavelength cones Signup and view all the answers

What is the function of the red-green channel in color perception?

Represent the difference between medium- and long-wavelength cones Signup and view all the answers

Which term describes the tendency for a surface to appear the same color under different illuminants?

Color constancy Signup and view all the answers

What is an illuminant in the context of color vision?

The light source illuminating the object Signup and view all the answers

Why do we show reasonable color constancy according to the text?

Due to chromatic adaptation Signup and view all the answers

What is a limitation of the theory on color constancy according to the text?

Lack of comprehensive understanding of how factors combine Signup and view all the answers

What term is used to describe cues to depth produced by muscular contractions of the muscles around the eye?

Oculomotor cues Signup and view all the answers

According to Jacobs (2002), to maximize the accuracy of our depth perception, we should assign more weight to which type of cues?

Reliable cues Signup and view all the answers

In size constancy, what does an object tend to appear as, regardless of changes in its retinal image size?

It appears the same size Signup and view all the answers

What phenomenon explains the misperception of one's own bodily size leading to misjudgment of the size of objects?

Body size effect Signup and view all the answers

Which patients with damage to early visual cortex show evidence of being able to respond to visual stimuli without conscious awareness, according to the text?

Blindsight patients with damage to V1 Signup and view all the answers

What is subliminal perception, as described in the text?

The perceptual processing occurring below conscious awareness Signup and view all the answers