Had A Brain Been There To Vanish?

Since I see the light within you dims... The urgency to stop it, Has me slowed. I used to get excited, By a potential you once showed. But when that was allowed to dull... I wondered alone in my private thoughts, What it was encased in your skull? Had a brain been there to vanish? And to whose advantage, Was it given permission to disappear. And what is it now that occupies the space? Something on a remote control... And needing its batteries replaced? Trained mice are not as distracted, As you have shown to be!