His brain remained passive and had ceased its thought processes.

It recommended that people be declared dead only when their entire brain - including the brain stem - ceased to function.

His brain had ceased almost entirely to function.

He swam on, not daring to stop until his brain ceased to function.

What I want to know is whether his brain has ceased functioning.

The heart stopped, the brain ceased thought-and they died.

A person's brain can have ceased to function but their body, with medical assistance, can keep going.

His reflexes took over where his brain ceased to function.

In brain death, the entire brain irreversibly ceases to function.

Get within range while it's on and your brain will cease to work, permanently.