HCI and Human Senses

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?

They could have a role to play, such as in giving warnings of malfunctions (B) Signup and view all the answers

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

They mean that there are certain things that cannot be seen by the human (B) Signup and view all the answers

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

They allow images to be constructed from incomplete information (C) Signup and view all the answers

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

To provide high sensitivity to light and enable low-light vision (B) Signup and view all the answers

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

The retina becomes saturated by the sudden increase in light intensity (B) Signup and view all the answers

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

To detect fine detail and color in the visual field (D) Signup and view all the answers

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

120 million (A) Signup and view all the answers

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

Towards the edges of the retina (B) Signup and view all the answers

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

To focus light into a sharp image on the retina (A) Signup and view all the answers

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

To provide high-resolution color vision (D) Signup and view all the answers

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

To allow the optic nerve to enter the eye without obstructing vision (C) Signup and view all the answers

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

X-cells are concentrated in the fovea and detect patterns, while Y-cells are distributed across the retina and detect movement (A) Signup and view all the answers

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

By filling in the missing information using the visual information from the other eye (D) Signup and view all the answers

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

To convert light energy into electrical signals that can be processed by the brain (C) Signup and view all the answers

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

The size of the object is inversely proportional to the size of its image on the retina (C) Signup and view all the answers

Which of the following is true about the visual angle?

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. (D) 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?

The object closer to the eye will have a larger visual angle. (A) Signup and view all the answers

What is the unit of measurement for visual angle?

Degrees or minutes of arc (C) Signup and view all the answers

What is the relationship between luminance and brightness?

Brightness is a subjective reaction to levels of light, while luminance is the amount of light emitted by an object. (A) Signup and view all the answers

What does the contrast of an object depend on?

The luminance of the object and the luminance of its background (A) Signup and view all the answers

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

Perception of depth (A) Signup and view all the answers

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

To provide a sense of identity by preserving past experiences (B) Signup and view all the answers

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

The ability to store the stimulus for a brief period of time (C) 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?

Procedural memory (B) Signup and view all the answers

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

They interact, with information being processed and passed between them (D) Signup and view all the answers

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

Olfactory memory (B) Signup and view all the answers

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

To act as buffers for stimuli received through the senses (C) Signup and view all the answers