A and B.

may open in response to binding a ligand.

B and C.

may open in response to a change in potential difference across the membrane.

are nonspecific.

Allows you to see the small-sized APs

Allows you to select what shaped signals you want to record

Allows you to select what signals you want to record

Allows the computer to understand what to record

Allows you to get rid of the electrical noise from equipment

A neuron increases its rate of APs with time

A neuron increases its rate of APs between refractory period bursts

A neuron slows down its rate of APs once it's been generating APs for a period of time. 

A neuron changes its AP threshold to increase its rate of APs over time

A neuron changes its RMP to increase its rate of APs over time

because you are recording from many nerve axons, some of which are close to the pins and some far away

because you are recording from many nerve axons, some of which are myelinated and some are unmyelinated

because you are recording from many nerve axons, some of which produce large APs and some produce small APs

because you are recording from many nerve axons, some of which are small diameter and some are large diameter

because you are recording from many nerve axons, with variable thresholds to produce APs (some low, some high and some in-between)

the arrival times of APs at each of the recording pins placed in the leg of the cockroach

the arrival times of APs at the ground electrode placed in the coxa of the leg of the cockroach

the changes in transmembrane potential

the APs generated by a large number of sensory neurons

the APs generated by a large number of sensory and motor neurons

A, B and C

The depth of the nerve below the skin

The amount of subcutaneous fat

Fatigue

A and B

depolarisation, hyperpolarisation, repolarisation

hyperpolarisation, depolarisation, repolarisation

repolarisation, hyperpolarisation, depolarisation

hyperpolarisation, repolarisation, depolarisation

depolarisation, repolarisation, hyperpolarisation

They have many small myelinated neurons producing large extracellular current flows

They have many large myelinated neurons producing large extracellular current flows

We can do so with relatively simple equipment and the  animals can be easily anesthetized

They have many motor neurons and this makes it easier to record APs as they have larger axons

Cockroach neurons produce more APs than vertebrate neurons

Changing the force acting only on the motor neurons

Changing the pressure acting directly on the neurons

Forcing the leg back and forth

Changing the air pressure to move the leg more

Changing the air pressure acting on the spines which provide input to neurons