Vision Flashcards
(23 cards)
Which of the following statements is true?
A. When visual information gets to the brain, it’s exactly like a high resolution picture of what we see in the real world.
B. The retina gathers light from the world and projects a focused 2D image on the lens.
C. The lens has cone and rod receptors.
D. Cone receptors are important for daylight, high resolution, colour vision.
cone receptors are important for daylight, high resolution, colour vision.
The lateral geniculate nucleus is part of the ____________________ .
A. hippocampus
B. hypothalamus
C. thalamus
D. early visual cortex
thalamus
The ____________________ is where all the axons from the ganglion cells come together and leave the eye.
A. optic nerve
B. optic chiasm
C. LGN
D. lens
optic nerve
Which of the following statements is false?
A. In the primary visual cortex, the left visual field is represented in the right hemisphere.
B. Neurons in primary visual cortex respond to orientation of lines.
C. The retina is composed by layers of neurons and their synapses.
D. We have a blind spot because part of our primary visual cortex has no neurons.
We have a blind spot because part of our primary visual cortex has no neurons.
Which of the following statements is false?
A. Patients with prosopagnosia normally have damage in the ventral stream.
B. Patients with prosopagnosia normally do not have damage in the dorsal stream.
C. The main impairment in prosopagnosia is that patients cannot perceive colour in objects that they otherwise perceive normally.
D. Patients with prosopagnosia have severe difficulties recognising faces of familiar people.
The main impairment in prosopagnosia is that patients cannot perceive colour in objects that they otherwise perceive normally.
Despite having severe object agnosia, patient DF could ____________________ objects, even if she could not ____________________ those same objects.
A. grasp; recognise
B. recognise; grasp
C. describe; draw
D. draw; describe
grasp; recognise
The ventral visual pathway is very important for ____________________ .
A. action on objects
B. object recognition
C. location of objects
D. grasping
object recognition
The ventral visual pathway is also called the ____________________ pathway.
A. what
B. how
C. where
D. why
what
The inability to recognise objects from sight is called visual ____________________ .
A. apraxia
B. agnosia
C. aphasia
D. alexia
agnosia
Which of the following statements is true?
A. In object agnosia, patients lost the ability to see objects in motion, despite perceiving the shape of the objects completely normally.
B. Object agnosia usually results from damage to the dorsal visual pathway.
C. fMRI has shown that most of the cortex in the ventral pathway from occipital lobe to the ventral temporal cortex responds to auditory signals.
D. fMRI has shown that there are regions in the ventral visual pathway that show quite specific responses to stimuli such as faces, bodies, and scenes.
fMRI has shown that there are regions in the ventral visual pathway that show quite specific responses to stimuli such as faces, bodies, and scenes.
Area ____________________ of the primate extrastriate cortex is critical for ____________________.
a. V5; the analysis of movement
b. V3; colour perception
c. V4; the analysis of movement
d. V8; colour perception
V5; the analysis of movement
What determines the color of light?
a. Intensity of the light source
b. Wavelength of the light
c. Speed of light in the medium
d. Refraction index of the eye
Wavelength of the light
Which part of the eye is responsible for focusing light onto the retina?
a. Cornea
b. Iris
c. Lens
d. Optic nerve
Lens
The photoreceptors in the retina are responsible for:
a. Transmitting neural signals to the brain
b. Converting light into electrical signals
c. Enhancing the intensity of the image
d. Filtering out harmful UV light
Converting light into electrical signals
Which type of photoreceptor is most sensitive to low light levels?
a. Rods
b. Cones
c. Ganglion cells
d. Bipolar cells
Rods
The primary visual cortex (V1) is located in the:
a. Parietal lobe
b. Temporal lobe
c. Occipital lobe
d. Frontal lobe
Occipital lobe
Which structure in the brain serves as a relay station for visual signals?
a. Superior colliculus
b. Thalamus (Lateral Geniculate Nucleus)
c. Hypothalamus
d. Amygdala
Thalamus (Lateral Geniculate Nucleus)
The trichromatic theory of color vision states that:
a. There are three types of cones, each sensitive to a specific wavelength range.
b. Color is perceived by opponent processes in the visual system.
c. Rods and cones work together to produce color vision.
d. Color perception depends solely on retinal processing.
There are three types of cones, each sensitive to a specific wavelength range.
The opponent-process theory explains why:
a. We perceive different colors based on cone interactions.
b. Some colors, like reddish-green, are impossible to see.
c. Vision adjusts to varying light intensities.
d. The retina adapts to color overexposure.
Some colors, like reddish-green, are impossible to see.
Binocular disparity contributes to:
a. Object recognition in low light
b. Depth perception by comparing images from both eyes
c. Filtering irrelevant visual stimuli
d. Increasing visual acuity
Depth perception by comparing images from both eyes
Which cue helps perceive depth in a 2D image?
a. Retinal disparity
b. Texture gradient
c. Accommodation
d. Binocular convergence
Texture gradient
Damage to the optic nerve can result in:
a. Total blindness in one eye
b. Tunnel vision
c. Loss of color vision
d. Inability to perceive depth
Total blindness in one eye
Macular degeneration primarily affects:
a. Peripheral vision
b. Night vision
c. Central vision
d. Depth perception
Central vision
