Sensation and Perception

Question 1

What are the 3 levels of neural integrations in sensory systems?

Answer 1

Receptor level: sensory receptors and primary sensory neuron
Circuit level: processing in ascending pathways
Perception level: processing in cerebral cortex, interpretation.

Question 2

What are the 2 pathways that trasmit impulses via the thalamus to the sensory cortex?

Answer 2

Dorsal column-medial lemniscal and spinothalamic.

Question 3

What pathway only transmits information to the cerebellum?

Answer 3

Spinocerebellar.

Question 4

What is the purpose of the spinothalamic pathway?

Answer 4

Transmits impulses for pain and temperature and couse touch to make multiple synapses in the brain stem.

Question 5

What is the purpose of the dorsal column-medial lemniscal pathway?

Answer 5

Precise, straight-through transmission of inputs for localized touch and vibration sensations. Also from proprioceptors.

Question 6

What are the 4 components of the dorsal column-medial lemniscal pathway?

Answer 6

dorsal white column, fasciculus cuneatus, fasciculus gracilis and medial lemniscus.

Question 7

What are the 2 different conponents and purpose of the spinocerebellar pathway?

Answer 7

Ventral and dorsal spincerebellar tracts: informatiomn about muscle or tendon