Cockroach neurons are small 

Neurons are noisy structures

Cockroach neurons are not myelinated

The "X Files" is correct and we are actually being targeted by aliens

There is stray electrical noise from electrical equipment

6-7 msec

1-2 msec

0.5 msec

5 msec

1 sec

The length of the nerve

The conduction velocity

The distance the impulse has to travel

Acceleration of the impulse

The time between stimulation and the beginning of the twitch

you should always test from low to high temperatures to build up the patient's capacity to tolerate temperature

the order of temperatures should be randomized to prevent order effects

you should always test from low to high temperatures to allow skin resistance to gradually settle to the lower temperatures 

you should always test from high to low temperatures to allow skin resistance to gradually settle to the lower temperatures 

you should always test from low to high temperatures to build up skin capacity to tolerate temperature

These sensory neurons are always active

These spines which provide input to the neurons are easily deflected by movement of the air around them or vibrations of the ground

The metal pins cause an electrical surge in the neurons to activate them

The metal pins fuse the spines together to activate the neurons

The sensory neurons are activated by the metal pins

Neuron A

Neuron B

Ulnar N CV was unaffected by changes in skin temperature

Ulnar N CV increased with increasing skin temperature up to 29^oC but then decreased as the skin got burnt

Ulnar N CV decreased with increasing skin temperature

Ulnar N CV increased with increasing skin temperature

From the site of AP production current flows in both directions along the neuron

At the site of AP production all voltage-gated Na+ channels are refractory

Ahead of the site of AP production, the RMP is hyperpolarized

Ahead of the site of AP production voltage-gated K⁺ channels are opening

The RMP at the site of AP production is in a refractory period phase

Cause enough K⁺ channels to close to trigger an action potential

Cause a net flux of positively charged ions from inside to outside the cell

Cause the voltage-gated Na⁺ channels to become refractory

Cause the opening of enough K⁺ channels to initiate an action potential 

Cause voltage-gated Na⁺ channels to open to trigger and AP

To allow into your recording any signals at any frequency so that you don't miss the one you're interested in

To allow into your recording only signals at and below that specific frequency

To allow into your recording only a signal at that specific frequency

To allow into your recording only signals at and just around that specific frequency

To allow into your recording only signals at and above that specific frequency