Non-zero Levels of Spontaneous Activity in Primary Afferent Neurons

Question 0

Our sensory systems generally have a non-zero level of spontaneous activity in primary afferent neurons. How does this facilitate coding of sensory information?
Abeta

Answer 0

Diameter 6-12 um
Speed 35-75 m/s
Carry information related to touch

Question 1

Our sensory systems generally have a non-zero level of spontaneous activity in primary afferent neurons. How does this facilitate coding of sensory information?
Aalpha axons

Answer 1

Diameter - 13-20 um
Speed 80-120 ms
Carry information related to proprioception (muscle sense)

Question 2

Our sensory systems generally have a non-zero level of spontaneous activity in primary afferent neurons. How does this facilitate coding of sensory information?
Adelta

Answer 2

Diameter 1-5 um
Speed 5-35 m/s
Carry information related to pain and temperature

Question 3

Our sensory systems generally have a non-zero level of spontaneous activity in primary afferent neurons. How does this facilitate coding of sensory information?
C

Answer 3

Diameter .2-1.5 um
Speed .5-2.0 m/s
Carry information related to pain, temperature and itch