Mechanisms Flashcards
1
Q
mechanism: membrane capacitance
A
the force of wave displaces membrane ( changing thickness and curvature) which creates current differences across the membrane, aka flexoelectricity
alternatively, expansion and oscillation of bubbles within lipid bilayer result in capacitive current changes
2
Q
mechanism mechanosensitive
A
the force of the wave activates mechanosensitive ion channels in the cell membrane
evidence for potassium, sodium and calcium channel changes
3
Q
mechanism: membrane openings
A
tiny pores are opened in the lipid bilayer (sonoporation) which allow excitatory ions inside the cell
4
Q
mechanism: mechanical action potential
A
action potential propagation down the axon is partly mechanical and thus influenced by ultrasound wave
