conclusion of habitation practical
-with repeated stimulation, calcium ion channels in the presynaptic membrane become less responsive
=less calcium ions cross the membrane into the presynaptic sensory neurone
-as a result, fewer transmitters are released into the synaptic cleft
-this means that an action potential across the post synaptic membrane is less likely
-fewer action potential are produced in the post synaptic motor neurone so less of a response is observed
-after a certain number of trials the snail should become unresponsive