tophat ch 5 Flashcards
Three colours of light (red, green, blue) pass through a filter that is yellow in color. What color will
come out?
yellow
The study of the relationship between physical events and how we respond to them psychologically
is called ______
psychophyics
The expression ∆ I
I =K is called ______; the expression S = K log R is called ______
Weber’s law; Fechner’s law
Weber’s law states that the ____
JND with respect to the intensity level of any stimulus is a constant proportio
Assuming that you are just able to detect the difference between 40kg and 45kg. If the initial weight
is 80kg, what will be the just noticeable difference (JND)? In other words, the JND for 40 is 5, the
JND for 80 is _____
10
. If you can just notice the difference between 10- and 11-pound weights, what is the
minimum weight that you can differentiate from a 40-pound weight?
44-pound
Which type of cells has the largest number (compared to the others)
rods
Fill in the blanks:
_____ affects the perception of brightness; _____ affects the perception of color; _____ affects the
perception of saturation
Amplitude; wavelength; purity
The primary visual cortex is in the _______ lobe
occipita
. In psychophysical research, the absolute threshold has been arbitrarily defined as
The stimulus intensity that can be detected 50% of the time. *
A tone-deaf person would probably not be able to tell two musical notes apart unless they
are very different. We could say that this person has a relatively large _____.
just noticeable difference
The visual pathway that has been characterized as the _______ travels through the dorsal
stream to the parietal lobes, whereas the pathway that has been labelled the _______
“where/how” pathway; “what” pathway
Damage to which of the following lobes would make it difficult for you to touch your finger
to your nose with your eyes closed?
parietal
According to the opponent-process theory, ____
neurons involved in color vision are stimulated by one wavelength (e.g., green) and
inhibited by another (e.g., red)
Which statement(s) is/are true?
(i) A color printer uses green, red, blue as the three primary colors to produce all other colors.
(ii) In additive color mixing, the secondary colors are darker than the primary colors.
(iii) In subtractive color mixing, the secondary colors are lighter than the primary colors.
(iv) The primary colors of subtractive color mixing are cyan, magenta, and yellow.
iv
