Local circuit dynamics

Question 1

Within a larger network, local circuits form sensory and motor systems from both CNS and PNS interact to create what?

Answer 1

Conscious awareness of our internal and external environments
- These circuits are comprised of neurons that have different functional roles (categorized by these roles)

Question 2

What does it mean to say that the periphery motor and sensory inputs are considered to be “reliable”?

Answer 2

it means they aren’t plastic

- These areas are genetically constrained and cannot be altered by activity

Question 3

How are the neurons of the CNS different from the PNS in terms of the neurons?

Answer 3

CNS are plastic and their synaptic strength is activity-dependent

Question 4

What are the functional neuron types?

Answer 4

Sensory neurons
Motor neurons
Interneurons
Modulatory neurons

Question 5

Sensory neurons

Answer 5

responsible for detecting stimuli, there peripheral processes supply specialized r/c to convert environmental stimuli into electrical impulses

Question 6

What happens once environmental stimuli is turned into electrical stimuli?

Answer 6

Electrical impulses are then converted to chemical signals (NTs) which are transmitted to a more central location

Question 7

What do Motor neurons transmit?

Answer 7

impulses from a central location of the CNS to a distant target which then stimulates muscular or glandular response

Question 8

What are interneurons?

Answer 8

They neurons located within and between pathways, they convert chemical signals back into electrical signals

Question 9

What do interneurons serve as?

Answer 9

connection point between sensory and motor pathways

Question 10

What are modulatory neurons?

Answer 10

Projection neurons that play an essential role in the regulation of neuronal integration for all sensory, motor and associative system input
- Modulate general and widespread function in the CNS