Question 1

Who discovered the shift in relative brightness of different light wavelengths during dark adaptation?

Accepted Answer

A)  Robson 
B)  De Lange 
C)  Fourier 
D)  Purkinje 
A)  Robson 
B)  De Lange 
C)  Fourier 
D)  Purkinje D

Question 2

Compared to photopic conditions, in scotopic conditions spatial contrast sensitivity:

Accepted Answer

A)  Peaks at lower spatial frequencies 
B)  Peaks at higher temporal frequencies 
C)  Is highest at very low spatial frequencies 
D)  Is highest at very high temporal frequencies 
A)  Peaks at lower spatial frequencies 
B)  Peaks at higher temporal frequencies 
C)  Is highest at very low spatial frequencies 
D)  Is highest at very high temporal frequencies A

Question 3

What is the temporal frequency of a light that repeatedly alternates between dark phases and bright phases, with each phase lasting in 125 milliseconds?

Accepted Answer

A)  4 Hz 
B)  0.25 Hz 
C)  8 Hz 
D)  125 Hz 
A)  4 Hz 
B)  0.25 Hz 
C)  8 Hz 
D)  125 Hz A

Question 4

Which processing stage is not part of current theories of edge localisation:

Accepted Answer

A)  Spatial filtering 
B)  Feature extraction 
C)  Filter combination 
D)  Fourier analysis 
A)  Spatial filtering 
B)  Feature extraction 
C)  Filter combination 
D)  Fourier analysis

Question 5

Which one of the following changes does not occur during dark adaptation?

Accepted Answer

A)  Peak contrast sensitivity shifts to higher spatial frequencies 
B)  Peak contrast sensitivity shifts to lower temporal frequencies 
C)  Peak spectral sensitivity shifts to shorter wavelengths 
D)  Visual function shifts from cone vision to rod vision 
A)  Peak contrast sensitivity shifts to higher spatial frequencies 
B)  Peak contrast sensitivity shifts to lower temporal frequencies 
C)  Peak spectral sensitivity shifts to shorter wavelengths 
D)  Visual function shifts from cone vision to rod vision

Question 6

A grating pattern containing bright and dark bars that are each 0.25 deg wide has a spatial frequency of:

Accepted Answer

A)  0.25 cpd 
B)  4 cpd 
C)  2 cpd 
D)  5 cpd 
A)  0.25 cpd 
B)  4 cpd 
C)  2 cpd 
D)  5 cpd

Question 7

Which of the following does not limit the utility of Fourier analysis as a model for spatial vision? Fourier transforms:

Accepted Answer

A)  Break images down into different frequency components 
B)  Are global operations across the entire image 
C)  Represent each frequency component independently of all others 
D)  Assume that responses are linear 
A)  Break images down into different frequency components 
B)  Are global operations across the entire image 
C)  Represent each frequency component independently of all others 
D)  Assume that responses are linear

Question 8

Which statement about hyperacuity is false?

Accepted Answer

A)  It has implications for theoretical models of edge localisation 
B)  It refers to high-precision edge localisation 
C)  It can be explained by receptive fields integrating across a number of photoreceptors 
D)  It cannot be finer than the resolution of the retinal photoreceptor mosaic 
A)  It has implications for theoretical models of edge localisation 
B)  It refers to high-precision edge localisation 
C)  It can be explained by receptive fields integrating across a number of photoreceptors 
D)  It cannot be finer than the resolution of the retinal photoreceptor mosaic

Question 9

Which of the following does not occur after adaptation to a high-contrast, high spatial frequency grating:

Accepted Answer

A)  Contrast threshold elevation for high spatial frequency gratings 
B)  Increases in the apparent spatial frequency of higher spatial frequency gratings 
C)  Decreases the apparent spatial frequency of lower spatial frequency gratings 
D)  Contrast threshold elevation for low spatial frequency gratings 
A)  Contrast threshold elevation for high spatial frequency gratings 
B)  Increases in the apparent spatial frequency of higher spatial frequency gratings 
C)  Decreases the apparent spatial frequency of lower spatial frequency gratings 
D)  Contrast threshold elevation for low spatial frequency gratings

Question 10

Which statement is not true about scene 'gist'?

Accepted Answer

A)  It refers to basic level semantic categorisation of a scene 
B)  It requires extended viewing time to develop 
C)  It can be analysed using relative coarse detail from the entire image 
D)  It can play an important role in recognition and attention 
A)  It refers to basic level semantic categorisation of a scene 
B)  It requires extended viewing time to develop 
C)  It can be analysed using relative coarse detail from the entire image 
D)  It can play an important role in recognition and attention

Question 11

Which statement about the spatial scale of images is false?

Accepted Answer

A)  The general shape and structure of an object corresponds to coarse-scale image detail 
B)  Natural images contain detail at many different spatial scales 
C)  Natural images typically contain a preponderance of low spatial frequencies 
D)  The textural property of a surface is carried predominantly in very coarse-scale image detail 
A)  The general shape and structure of an object corresponds to coarse-scale image detail 
B)  Natural images contain detail at many different spatial scales 
C)  Natural images typically contain a preponderance of low spatial frequencies 
D)  The textural property of a surface is carried predominantly in very coarse-scale image detail

Question 12

In the parallel pathways account of spatiotemporal contrast sensitivity, the sustained channel:

Accepted Answer

A)  Is the most sensitive channel at low spatial frequencies 
B)  Is characterised by responses in the parvo division of the visual pathway 
C)  Is the most sensitive channel high temporal frequencies 
D)  Conveys information about movement 
A)  Is the most sensitive channel at low spatial frequencies 
B)  Is characterised by responses in the parvo division of the visual pathway 
C)  Is the most sensitive channel high temporal frequencies 
D)  Conveys information about movement

Question 13

Which statement about the spatial and temporal properties of visual stimuli is true?

Accepted Answer

A)  The bars of a grating are more difficult to detect at higher contrasts 
B)  The spatial frequency of a grating increases as its viewing distance increases 
C)  The bars of a grating become wider as spatial frequency increases 
D)  The bars of two gratings are aligned at a spatial phase difference of 90° 
A)  The bars of a grating are more difficult to detect at higher contrasts 
B)  The spatial frequency of a grating increases as its viewing distance increases 
C)  The bars of a grating become wider as spatial frequency increases 
D)  The bars of two gratings are aligned at a spatial phase difference of 90°

Question 14

The size after-effect and tilt after-effect can both be explained by which principle:

Accepted Answer

A)  Population coding 
B)  Specific nerve energy 
C)  Metamerism 
D)  Rating coding 
A)  Population coding 
B)  Specific nerve energy 
C)  Metamerism 
D)  Rating coding

Question 15

In the Fourier amplitude spectrum of a complex image, components lying along a radius from the centre of the plot all have the same:

Accepted Answer

A)  Spatial frequency 
B)  Orientation 
C)  Amplitude 
D)  Phase 
A)  Spatial frequency 
B)  Orientation 
C)  Amplitude 
D)  Phase

Question 16

Which researchers first proposed that early visual processes create the Primal Sketch:

Accepted Answer

A)  Watt and Morgan 
B)  Marr and Hildreth 
C)  Morrone and Burr 
D)  Landy and Graham 
A)  Watt and Morgan 
B)  Marr and Hildreth 
C)  Morrone and Burr 
D)  Landy and Graham

Question 17

Which of these tasks measures vernier acuity?

Accepted Answer

A)  Minimum angle needed to discriminate the orientation offset between two lines 
B)  Minimum contrast needed to discriminate grating spatial frequency 
C)  Minimum displacement need to discriminate the position offset between two lines 
D)  Minimum contrast needed to discriminate grating orientation 
A)  Minimum angle needed to discriminate the orientation offset between two lines 
B)  Minimum contrast needed to discriminate grating spatial frequency 
C)  Minimum displacement need to discriminate the position offset between two lines 
D)  Minimum contrast needed to discriminate grating orientation

Question 18

Current computational models of texture discrimination involve:

Accepted Answer

A)  Edge localisation 
B)  A filter-rectify-filter process 
C)  Gist analysis 
D)  Motion analysis 
A)  Edge localisation 
B)  A filter-rectify-filter process 
C)  Gist analysis 
D)  Motion analysis

Question 19

A balanced centre-surround spatial receptive field has the following property:

Accepted Answer

A)  Excitatory influences are equal to inhibitory influences 
B)  There is no net response to uniform illumination 
C)  It has narrow spatial frequency tuning 
D)  It has high temporal frequency tuning. 
A)  Excitatory influences are equal to inhibitory influences 
B)  There is no net response to uniform illumination 
C)  It has narrow spatial frequency tuning 
D)  It has high temporal frequency tuning.

Question 20

The excitatory and inhibitory components of a centre-surround receptive field:

Accepted Answer

A)  Are multiplied together to determine the cell's net response 
B)  Differ in width 
C)  Both have a high-pass spatial frequency response 
D)  Differ in orientation tuning 
A)  Are multiplied together to determine the cell's net response 
B)  Differ in width 
C)  Both have a high-pass spatial frequency response 
D)  Differ in orientation tuning

Who discovered the shift in relative brightness of different light wavelengths during dark adaptation?

Compared to photopic conditions, in scotopic conditions spatial contrast sensitivity:

What is the temporal frequency of a light that repeatedly alternates between dark phases and bright phases, with each phase lasting in 125 milliseconds?

Which processing stage is not part of current theories of edge localisation:

Which one of the following changes does not occur during dark adaptation?

A grating pattern containing bright and dark bars that are each 0.25 deg wide has a spatial frequency of:

Which of the following does not limit the utility of Fourier analysis as a model for spatial vision? Fourier transforms:

Which statement about hyperacuity is false?

Which of the following does not occur after adaptation to a high-contrast, high spatial frequency grating:

Which statement is not true about scene 'gist'?

Which statement about the spatial scale of images is false?

In the parallel pathways account of spatiotemporal contrast sensitivity, the sustained channel:

Which statement about the spatial and temporal properties of visual stimuli is true?

The size after-effect and tilt after-effect can both be explained by which principle:

In the Fourier amplitude spectrum of a complex image, components lying along a radius from the centre of the plot all have the same:

Which researchers first proposed that early visual processes create the Primal Sketch:

Which of these tasks measures vernier acuity?

Current computational models of texture discrimination involve:

A balanced centre-surround spatial receptive field has the following property:

The excitatory and inhibitory components of a centre-surround receptive field:

General Principles

The Chemical Senses

The Body Senses

The Physics and Biology of Audition

Perception of Sound

The Physics of Vision & Light and the Eye

Visual Physiology

Colour Vision

Shape and Object Perception

Depth Perception

Visual Motion Perception

Multisensory Processing in Perception

Attention and Perception

Individual Differences in Perception

Filters

Exam 9: Spatial Vision

Who discovered the shift in relative brightness of different light wavelengths during dark adaptation?

Compared to photopic conditions, in scotopic conditions spatial contrast sensitivity:

What is the temporal frequency of a light that repeatedly alternates between dark phases and bright phases, with each phase lasting in 125 milliseconds?

Which processing stage is not part of current theories of edge localisation:

Which one of the following changes does not occur during dark adaptation?

A grating pattern containing bright and dark bars that are each 0.25 deg wide has a spatial frequency of:

Which of the following does not limit the utility of Fourier analysis as a model for spatial vision? Fourier transforms:

Which statement about hyperacuity is false?

Which of the following does not occur after adaptation to a high-contrast, high spatial frequency grating:

Which statement is not true about scene 'gist'?

Which statement about the spatial scale of images is false?

In the parallel pathways account of spatiotemporal contrast sensitivity, the sustained channel:

Which statement about the spatial and temporal properties of visual stimuli is true?

The size after-effect and tilt after-effect can both be explained by which principle:

In the Fourier amplitude spectrum of a complex image, components lying along a radius from the centre of the plot all have the same:

Which researchers first proposed that early visual processes create the Primal Sketch:

Which of these tasks measures vernier acuity?

Current computational models of texture discrimination involve:

A balanced centre-surround spatial receptive field has the following property:

The excitatory and inhibitory components of a centre-surround receptive field:

General Principles

The Chemical Senses

The Body Senses

The Physics and Biology of Audition

Perception of Sound

The Physics of Vision & Light and the Eye

Visual Physiology

Colour Vision

Shape and Object Perception

Depth Perception

Visual Motion Perception

Multisensory Processing in Perception

Attention and Perception

Individual Differences in Perception

Filters