Intro Lecture

Question 1

4 elementary features of stimuli?

Answer 1

Modality, Location, Intensity and Duration

Question 2

4 stimuli recognised by receptors?

Answer 2

Mechanical, Chemical, Electromagnetic, Thermal

Question 3

Locations of processing centres?

Answer 3

spinal cord, brain stem, thalamus, cerebral cortex

Question 4

5 classical sensory systems?

Answer 4

Vision, Hearing, Smell, Touch, Taste

Question 5

5 other senses

Answer 5

Proprioception, Pain, Itch, Temperature, Balance

Question 6

Describe receptors

Answer 6

Highly specialised endings of afferent neurones

Question 7

What signals do receptors convert stimuli into, and where do they go?

Answer 7

Afferent signals to the brain

Question 8

What is the stimulus first transformed into?

Answer 8

Graded receptor potentials

Question 9

What is the magnitude of the graded receptor potential determined by?

Answer 9

Stimulus intensity and receptor sensitivity

Question 10

Which process transforms stimulus into an electrical response?

Answer 10

Stimulus Transduction

Question 11

What is sensory threshold?

Answer 11

The lowest level of stimulus that can be detected

Question 12

What determines stimulus modality?

Answer 12

Determined by the type of stimulus and receptor specificity

Question 13

What does stimulus intensity change?

Answer 13

Stronger stimuli affect a larger area and recruit a larger number of receptors

Question 14

What codes stimulus location?

Answer 14

Site of receptor - receptor field

Question 15

What is acuity?

Answer 15

The precision of location

Question 16

How is stimulus duration affected?

Answer 16

Rapid and slow adapting receptors

Question 17

Define receptive field

Answer 17

Space in which receptor transduces stimuli

Question 18

What comprises a Sensory Unit?

Answer 18

A single afferent neuron with associated receptor endings

Question 19

What are sensory or ascending pathways?

Answer 19

afferent neurons carrying info about a single type of stimulus

Question 20

Where do sensory/ascending pathways go?

Answer 20

The cerebral cortex which provides complex analysis of incoming info

Question 21

Advantages of multisensory integration?

Answer 21

Faster localisation accuracy and increased reaction time

Question 22

What are symptoms of SPD?

Answer 22

misinterpreting everyday signals such as touch, sound and movement

Question 23

Effects of SPD on children?

Answer 23

Impaired self-esteem, anxiety, depression/aggression, affected social engagement

Question 24

What are patterns of SPD?

Answer 24

Sensory-avoiding children, Sensory-seeking children, motor skills problems