a. Memory helps strengthen neurons, which leads to long-term potentiation.
b. Long-term potentiation leads to a deficit of memory, which is why the substances that lead to long-term potentiation should not be used recreationally for an extended period of time.
c. Memory and long-term potentiation have no direct relationship, but they are both associated with the strengthening of the amygdala and the hypothalamic cortex.
d. As long-term potentiation increases, we remember the memories associated with those neurons more easily.