Body Sensing Part III Converting the mechanical into the electrical

Rhodopsin Biochemical cascade

Possible mechanotransduction mechanism #1

Stretch sensing molecule? Biochemical cascade

Possible mechanotransduction mechanism #2

Stretch leads to action potentials

Time

Volta

ge

Need to know the amount of stretch

Which one is correct?

The action potential is stereotyped

Information in rate of action potentials, not features like size or shape

Which one is correct?

Touch sensing Also involves mechanical forces

Hair follicle receptors

Receptors in the skin

Next up:

Illusions of body position and touch