Sensory & Perception In-Action

Question 1

Identify the difference between sensory and perception

Answer 1

sensory: Neural activity triggered by a stimulus that activates a sensory receptor and results in sensory nerve impulses traveling along the sensory nerve pathways to the brain.

perception: A multistage process that takes place in the brain and includes selecting, processing, organizing, and integrating information received from the senses.

Question 2

Identify and state when major sensory milestones typically occur for vision, sensory needs to
develop to provide perception

Answer 2

milestones:
1 month = 5% (20/400)
- Facial features within 20 inches
6 months
- Sufficient for self-locomotion
5 years = 20/30
0 years = 20/20

• 40-65 years = presbyopia = “old man
  eyes” - decreased nearby focus
• Cataracts, glaucoma, maculopathy

Question 3

Understand and define habituation of sensory

Answer 3

decreased responsiveness to stimuli due to exposure
ex. smell/scent of a room goes away after you are in it for a min

Question 4

Understand and explain how looking preference, habituation, and cliff experiments are used to
understand infant perception

Answer 4

Looking Preference
- 2 stimuli presented, the preferred object gets more “looking time”
- Habituation
- Decreased perception of stimuli
- Infants:
- Tendency to look to new and novels shapes; can be habituated
- Face Perception
- 4-day olds will spend more time looking at
mother’s face
- Likely recognition of shape and
patches of light and dark - Velocity & Direction
- Infants perceive motion, but advanced aging needed for d & v

Question 5

Identify when figure-and-ground, and whole-and-part perception develops.

Question 6

Identify and state when sensory milestone occur.

Question 7

Using touch as an example, explain how our perception of our sensory input relies on how our
sensory receptors set-up.

Question 8

Identify, define, and state proprioception and proprioceptors.

Question 9

Define and explain perception-action theory using specific examples.

Question 10

Define and explain affordances

Question 11

Apply the concept of perception-action with examples in a clinical setting.

Question 12

If provided the nature of a medical condition, be able to identify if a condition will affect perception
and motor functioning.

Question 13

acuity

Answer 13

sharpness of vision

Question 14

Habituation

Answer 14

decreasing responsiveness with repeated stimulation. As infants gain familiarity with repeated exposure to a visual stimulus, their interest wanes and they look away sooner.

Question 15

figure-ground perception

Answer 15

the ability to discriminate properly between a figure and its background

Question 16

whole-part perception

Answer 16

the ability to discriminate parts of a picture or an object from the whole, yet integrate the parts into the whole, perceiving them simultaneously

Question 17

proprioception

Answer 17

our sense of body position in space

Question 18

proprioceptors

Answer 18

Sensory receptors, located in the muscles and joints, that provide information about body position and movement.

Question 19

Perception action

Answer 19

Eccological theory; Perception guides action, & action changes perception; action gives us an outcome that we perceive, which allows us to predict future movement outcomes by making a motor schema about that action-perception pairing