Question

 PART A. 

In Figure2 overleaf, 20 features of the recordings are marked in blue. Below it is a list describing 26 neural characteristics (A-Z). Match each feature (1-20) with the characteristic (A-Z) that best describes it (obviously not all the characteristics correspond to a feature). In cases where 2 answers may be correct choose the most comprehensive one. Write your answers on the answer sheet at the back of the printout. No answer is used more than once. Single ended arrows point to a moment or a feature; double ended arrows show a duration or amplitude or difference. 9 and 14 show delay between the closest points on the dashed lines

Answer 1

Part A

1)- A) overshoot of an action potential

2) - E) moment when delayed rectifier potassium channel is maximally activated

3)-O) undershoot of an action potential

4)-B) threshold of an action potential

20) - R) time taken foe an axon to conduct action potential added to a synaptic delay.

Answer 2

Part A

1)- A) overshoot of an action potential

2) - E) moment when delayed rectifier potassium channel is maximally activated

3)-O) undershoot of an action potential

4)-B) threshold of an action potential

20) - R) time taken foe an axon to conduct action potential added to a synaptic delay.

Part - B

5)- D firing rate is about 80 Hz

6) - W moment when inward sodium current is maximal.

7) -E moment where potassium channels are maximally activated.

8) -- resting membrane potential for cholinergic neuron.

17)- Q stimulus artefact

18) -Y conduction delay from action potential in a cell body added to the excitatory synaptic potential.

Part C-

9) - Y

Conduction delay added to excitatory synaptic potential.

10)-K

When temporal summation occurs

11) - Z

When noradrenalin depolarises a nerve cell.

12)- I

when excitatory ligand gated amino acid ion channel open

14) -V

moment when EPSP summates with IPSP.

D)

13) --

Moment when chloride current is operating

15) -H

Full duration of an inhibitory synaptic potential

16)- M

Maximal change in neurons caused by opening of chloride channels.

19)- F

RMP of glutaminergic neurons.