If electrical energy is what constitutes brain activity, then what happens to that energy when death occurs? What happens to electrical energy in a computer wh

If electrical energy is what constitutes brain activity, then what happens to that energy when death occurs? What happens to electrical energy in a computer when we switch it off? I'd say that nothing very interesting. "Constitutes" is also somewhat ambiguous. It's the structure of that electrical currents that depends on neural connections what I would say brain activity is. Once the neurons are unusable, the energy by itself is just dispersed, mere electrons with no shape. So we... die.