Chapter 03.1 - Sensing & Responding

Question 1

Senses

Answer 1

Vision, Hearing, Smell, Taste, Touch
Cold, warmth, pain
kinesthetic (movement)
vestibular (movement through space)

Question 2

Sensing vs Perception

Answer 2

Sensing is the capture and transformation of information required for the process of perception to take place.

Perception can be enhanced with experience.

Question 3

Threshold

Answer 3

The point on an intensity scale below which do not detect the stimulus and above which we do.

Question 4

Difference threshold

Answer 4

The minimum physical difference that produces a perceptible difference.

Question 5

Some approximate sensory thresholds

Answer 5

Sight - candle at 30 miles
Hearing - tick of a watch at 20 feet
Taste - a teaspoon of sugar in 2 gallons of water
Smell - Drop of perfume diffused in a volume of a three-room apartment
Touch - Wing of a bee on the cheek from 1 centimeter of distance

Question 6

Vision

Answer 6

The light that stimulates the eye is a form of electromagnetic radiation. The eye converts the light into a form that can be used by the brain

Question 7

Sensity of the eye variables

Answer 7

Size of stimulus, brightness and contrast, size of visual field, region of retina stimulated

Question 8

Common visual defects

Answer 8

Hyperopic: Eyeball is shorter than normal
Myopic: Abnormally long eye ball
Night blindness: Vitamin A defiency

Question 9

What are two visual deficiencies not correctable

Answer 9

Blindness & Color blindness

Question 10

Hearing impairments

Answer 10

Frequency: pitch
Intensity: loudness

Question 11

What are cutaneous senses?

Answer 11

Senses related to the surface of the body, such as touch (pressure), pain and temperature

Question 12

Touch

Answer 12

Experience when a depression is formed on the skin.

Question 13

Pain

Answer 13

Can motivate and deteriorate human performance more than any other stimulus

Question 14

Temperature

Answer 14

Cold & Warmth. Regular skin temperature is 91.4F

Question 15

Taste

Answer 15

Sweet, sour, salty, bitter and umami

Question 16

Smell

Answer 16

6 Qualities:
Spicy, fruity, burnt, resinous, flowery & putrid
10.000 times as sensitive as taste

Question 17

Kinesthetic (muscle sense)

Answer 17

3rd most import sense related to human performance. It provides information on:
the position of the limbs
How far they have moved
The posture of the body as a whole

Question 18

Vestibular

Answer 18

Provides people with information about their position in a three-dimensional space and their movement through space. Located in the inner ear