Sensation and Sensory Processing

Question 1

What does stimulus acuity depend on?

Answer 1

Receptor density

Size of receptive fields

Central convergence and lateral inhibition

Question 2

What is lateral inhibition?

Answer 2

High intensity stimuli causes neurones that receive thme to switch off lower intensity stimuli.

Question 3

What is the labelled line principle?

Answer 3

Sensory nerve transmits only one modality of sensation to specific location.

Receptor doesn’t dictate what brain will perceive, rather hte location of the afferent nerve.

Question 4

Adapting speed and what they sense: Tactile (Merkel’s) discs

Answer 4

Continuous light tough (steady info)

Slowly adapting.

Question 5

Adapting speed and what they sense: Tactile (Meissner’s) corpuscle.

Answer 5

Rapidly adapting.

Altered touch.

Question 6

Adapting speed and what they sense: Lamellar corpuscle

Answer 6

Rapidly adapting.

Deep pressure and vibration.

Question 7

Adapting speed and what they sense: Bulbous (Ruffini’s) corpuscle.

Answer 7

Slowly adapting.

Heavy touch, stretch

Question 8

What do golgi tendon organs sense?

Answer 8

Joint position and stretch.

Rapidly adapting.

Question 9

What do muscle spindles sense?

Answer 9

Rate of change and muscle stretch.