VIS Lecture 5 - Colour perception

What is unique about chromatic colours in relation to object properties?

Which of the following best describes how achromatic colours are produced?

What distinguishes 'hue' from 'saturation' and 'brightness' in describing color?

How does additive colour mixture differ from subtractive colour mixture?

What is the fundamental concept behind the trichromatic theory of colour vision?

What was the key finding from Helmholtz's colour-matching experiments that supported the trichromatic theory?

How do S, M, and L cones contribute to colour vision, according to the trichromatic theory?

What is the key characteristic of monochromatism?

What defines dichromatism in terms of cone function?

What is tetrachromacy and how does it differ from trichromacy?

What is the central idea behind the opponent-process theory of colour vision?

According to the opponent-process theory, what creates the perception of complementary afterimages?

What is the functional role of 'single-opponent' neurons in visual processing, according to the opponent process theory?

What role do 'double-opponent' neurons play in colour vision?

How do the trichromatic and opponent-process theories of colour vision complement each other?

If a transparent object appears achromatic, what can be inferred about its interaction with light?

In the context of colour perception, what does "Weber's discrimination threshold" refer to?

A painter mixes two different pigments, resulting in a new colour. What type of colour mixture is this, and what principle governs the resulting colour?

What physiological evidence supports the trichromatic theory of colour vision?

An individual is unable to distinguish between red and green. According to the impaired colour vision conditions, which condition best describes this?

What is the most accurate description of how colour enhances perceptual organisation:

Which of the following is an accurate statement regarding how the brain processes information about colour?

Which of the following best defines the term sensation?

Which of the following is the most accurate definition of "the visible light spectrum"?

A scientist discovers a new species of animal that possesses four different types of cones in their eyes. Based on this information, what can be inferred?

Regarding the trichromatic theory of colour vision, which researcher(s) is/are most strongly associated with?

Why are there no colours that can be described as blueish-yellow or reddish-green?

According to the opponent-process theory, what happens when you adapt to black?

Which of the following statements accurately describes the trichromatic theory:

Which of the following represents the correct order in which the visual information is processed with regards to colour vision:

Of the following examples, which is processed by single-opponent receptive fields?

Which statement(s) relate to the functions of the opponent visual neurons with double-opponent receptive fields (select all that apply):

Which of the following is an accurate statement regarding wavelengths and perceived colour:

Of the following colours, which can be descibed as pure colours?

If a solid object equally reflects all wavelengths, what colour would this be?

With regards to the different cone types responding, which statement is correct?

What type of vision are people with monochromatism likely to experience?

Which of the following descriptions are related to impairments of dichromatism?

What is the fundamental difference between sensation and perception?

How does top-down processing influence colour perception?

What is the significance of colour being described as 'non-veridical'?

Which statement accurately contrasts chromatic and achromatic colours?

Which of the following accurately describes light transmission in transparent objects?

Why does mixing pigments result in subtractive colour mixture?

Colour-matching experiments are seen as key findings with regards to the trichromatic theory, but which statement represents its main conclusion?

How do the responses of S, M, and L cones differ when perceiving the colour yellow?

What distinguishes dichromatism from normal trichromatic vision?

What is a key implication of the observation that there are no reddish-green or bluish-yellow colours?

According to the opponent-process theory, how does the perception of afterimages arise?

What is the functional role of single-opponent neurons with regards to colour vision?

What is the function of double-opponent neurons?

How does the trichromatic theory complement the opponent process theory in explaining colour vision?

If two objects are perceived to be the same colour under varying lighting conditions, which perceptual phenomenon is most likely at play?

What is Weber's discrimination threshold and how does it relate to colour perception?

How does the brain process information of black and white achromatic colors?

How does the number of cone types affect an animal's colour vision?

If a specific cone type is not functioning properly, what is likely to occur?

Regarding impairments of dichromatism, which of the following is most likely to occur?

Which process is responsible for the perception of a lime as green?

From the assumptions of the trichromatic theory of colour vision (Young and Helmholtz) it can be derived that:

Which statement about colour vision is correct?

A man walks into a paint store looking for violet paint, but the store owner cannot create the colour for him. If he has normal colour vision, can you provide a likely reason for this?