The answer boils down to grammar. Contrary to the way we've learned to think about memory, remembering is a verb, not a noun.

If by “electroshock” you mean electroconvulsive therapy (ECT), then the answer is yes. If by “they” you mean plumbers, then the answer is probably no. But yes, psychiatrists still use it. Why? Because it works. Does it cause brain damage? That depends on how you define brain damage, but probably not.