PSYC 230 EXAM 2 2025/2026 Exam
Questions and Correct Answers | New
Update
Three steps to color perception - 🧠 ANSWER ✔✔detection, discrimination,
appearance
detection - 🧠 ANSWER ✔✔wavelengths of light must be detected
discrimination - 🧠 ANSWER ✔✔we must be able to tell the difference
between wavelengths
appearance - 🧠 ANSWER ✔✔assigning wave lengths and letting them stay
that way over time
Cone types of photoreceptors - 🧠 ANSWER ✔✔S, M, L (short, medium,
long)
, photopic - 🧠 ANSWER ✔✔bright enough to stimulate the cone receptors
and to saturate the rod receptors
scotopic - 🧠 ANSWER ✔✔bright enough to stimulate the cone but too dim
to saturate rods
The problem of univariance - 🧠 ANSWER ✔✔An infinite set of combinations
can get the same response from a single type of photoreceptor. One type
of photoreceptor cannot make color discriminations based on wavelength
trichromacy - 🧠 ANSWER ✔✔the color of any light is defined in our visual
system by the relationships of three numbers, the outputs of three receptor
types now known to be the three cones
cone-opponent cell - 🧠 ANSWER ✔✔neuron whose output is based on a
difference between sets of cones.
color space - 🧠 ANSWER ✔✔three-dimensional space that describes all
colors.
RGB color space - 🧠 ANSWER ✔✔Defined by the outputs of short,
medium, and long wavelength lights
HSB color space - 🧠 ANSWER ✔✔hue, saturation, brightness
Questions and Correct Answers | New
Update
Three steps to color perception - 🧠 ANSWER ✔✔detection, discrimination,
appearance
detection - 🧠 ANSWER ✔✔wavelengths of light must be detected
discrimination - 🧠 ANSWER ✔✔we must be able to tell the difference
between wavelengths
appearance - 🧠 ANSWER ✔✔assigning wave lengths and letting them stay
that way over time
Cone types of photoreceptors - 🧠 ANSWER ✔✔S, M, L (short, medium,
long)
, photopic - 🧠 ANSWER ✔✔bright enough to stimulate the cone receptors
and to saturate the rod receptors
scotopic - 🧠 ANSWER ✔✔bright enough to stimulate the cone but too dim
to saturate rods
The problem of univariance - 🧠 ANSWER ✔✔An infinite set of combinations
can get the same response from a single type of photoreceptor. One type
of photoreceptor cannot make color discriminations based on wavelength
trichromacy - 🧠 ANSWER ✔✔the color of any light is defined in our visual
system by the relationships of three numbers, the outputs of three receptor
types now known to be the three cones
cone-opponent cell - 🧠 ANSWER ✔✔neuron whose output is based on a
difference between sets of cones.
color space - 🧠 ANSWER ✔✔three-dimensional space that describes all
colors.
RGB color space - 🧠 ANSWER ✔✔Defined by the outputs of short,
medium, and long wavelength lights
HSB color space - 🧠 ANSWER ✔✔hue, saturation, brightness
