Practice thinking through neural circuits to understand some

Practice thinking through neural circuits to understand some of the spinal cord diagrams. 3clow is a diagram of a network of neurons A-G, and additional inputs (XY) to provide some additional excitatory input for E, F, and G. Assume that all firing at a low basal rate, and that firing rate can both be increased or decreased by an excitatory (+) or inhibitory (-) synapse. What does an excitatory or inhibitory synapse even mean? Think back - where would you expect to find GABA and Glutamate, which would produce an EPSP or an lPSP, and which would increase or decrease the rate of an action potential? Include those three details for both 1 and 2. Excitatory inhibitory you insert an electrode into a neuron and apply enough current to increase the number of action potentials it fires over time (\'firing rate\']. You then observed changes in firing rates of downstream neurons as an increase or decrease. Answer the following Questions with either \'increase\' or \'decrease\' Stimulate Neuron A- what happens to the activity in Neuron D ? Stimulate Neuron B - what happens in Neuron F? Stimulate Neuron A - what happens in Neuron E? Stimulate Neuron C - what happens in Neuron G? Would this neural circuitry work in a reflex are. if Neuron F synapsed on an extensor and Neuron G synapsed on a flexor?

Solution

1.Excitory synpases is a synapses in which the enhancement of the probability of to increase action potential in presynpatic nurone when it goes it the postsyneptic nuron. nurone form the network from which potentials can travel.

2. inhibitory synpases is a kind of synaptic potential that makes a postsynaptic neuron less likely to generate an action potential.

GABA is am inhibitory nurotransmitter. it is indicated with C aand E postsynapticnurone in figure.

Glutamate is excitory nurotransiter in body. inn the above figure except C and E all are postsynpatic nurones means A, B, D , F , G , Y , Z

3. B is the excitory nurotransmitter which generate the action potential which is trnsmitted to the nurone D, while nurone D supress the aaction potential to the nurone F

4. it is similar as said above.

5. A is postsynaptic excitory nurotransmitter means it is a glutamate which generate action potential to the nurone C , due to activation of nurone C which is inhibitory in response it inhibit the action potential of Nurone E.

6. it same as in 5

7.it will not clered based on hint