HCI and Human Senses
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Questions and Answers

Which of the following senses does the text state do not currently play a significant role in human-computer interaction?

  • Hearing
  • Vision
  • Touch
  • Taste (correct)

    • Which of the following effectors plays the primary role in interaction with a computer?

  • Limbs
  • Fingers (correct)
  • Eyes
  • Vocal system

    • Which of the following is NOT one of the central senses in human-computer interaction?

  • Touch
  • Vision
  • Smell (correct)
  • Hearing

    • What does the text state about the role of taste and smell in more specialized computer systems?

    <p>They could have a role to play, such as in giving warnings of malfunctions</p> Signup and view all the answers

    What does the text state about the physical properties of the eye and the visual system?

    <p>They mean that there are certain things that cannot be seen by the human</p> Signup and view all the answers

    Which of the following does the text state about the interpretative capabilities of visual processing?

    <p>They allow images to be constructed from incomplete information</p> Signup and view all the answers

    What is the primary function of the rods in the human eye?

    <p>To provide high sensitivity to light and enable low-light vision</p> Signup and view all the answers

    What is the main reason for the temporary blindness experienced when moving from a darkened room into sunlight?

    <p>The retina becomes saturated by the sudden increase in light intensity</p> Signup and view all the answers

    What is the primary function of the cones in the human eye?

    <p>To detect fine detail and color in the visual field</p> Signup and view all the answers

    What is the approximate number of rods per eye in the human eye?

    <p>120 million</p> Signup and view all the answers

    Where are the majority of rods located in the human eye?

    <p>Towards the edges of the retina</p> Signup and view all the answers

    What is the primary purpose of the cornea and lens in the human eye?

    <p>To focus light into a sharp image on the retina</p> Signup and view all the answers

    What is the main purpose of the cone receptors in the eye?

    <p>To provide high-resolution color vision</p> Signup and view all the answers

    What is the purpose of the blind spot in the retina?

    <p>To allow the optic nerve to enter the eye without obstructing vision</p> Signup and view all the answers

    How do ganglion cells in the retina differ in their function?

    <p>X-cells are concentrated in the fovea and detect patterns, while Y-cells are distributed across the retina and detect movement</p> Signup and view all the answers

    How does the visual system compensate for the blind spot in the retina?

    <p>By filling in the missing information using the visual information from the other eye</p> Signup and view all the answers

    What is the primary function of the retina in the visual process?

    <p>To convert light energy into electrical signals that can be processed by the brain</p> Signup and view all the answers

    What is the relationship between the size of an object and its image on the retina?

    <p>The size of the object is inversely proportional to the size of its image on the retina</p> Signup and view all the answers

    Which of the following is true about the visual angle?

    <p>It is the angle between a line from the top of the object to a central point on the eye and a line from the bottom of the object to the same point.</p> Signup and view all the answers

    If two objects of the same size are placed at different distances from the eye, which one will have a larger visual angle?

    <p>The object closer to the eye will have a larger visual angle.</p> Signup and view all the answers

    What is the unit of measurement for visual angle?

    <p>Degrees or minutes of arc</p> Signup and view all the answers

    What is the relationship between luminance and brightness?

    <p>Brightness is a subjective reaction to levels of light, while luminance is the amount of light emitted by an object.</p> Signup and view all the answers

    What does the contrast of an object depend on?

    <p>The luminance of the object and the luminance of its background</p> Signup and view all the answers

    What factor is not mentioned in the text as being important for visual perception?

    <p>Perception of depth</p> Signup and view all the answers

    What is the main purpose of memory according to the passage?

    <p>To provide a sense of identity by preserving past experiences</p> Signup and view all the answers

    What characteristic of echoic memory allows us to determine the direction of a sound?

    <p>The ability to store the stimulus for a brief period of time</p> Signup and view all the answers

    According to the passage, which of the following is NOT one of the three types of memory or memory function?

    <p>Procedural memory</p> Signup and view all the answers

    What is the relationship between the different types of memory according to the passage?

    <p>They interact, with information being processed and passed between them</p> Signup and view all the answers

    Which of the following is NOT a sensory memory mentioned in the passage?

    <p>Olfactory memory</p> Signup and view all the answers

    What is the primary function of sensory memories according to the passage?

    <p>To act as buffers for stimuli received through the senses</p> Signup and view all the answers

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