[JoeAltmaier]

There's a term ambulance drivers use, "Walk, talk and die". For victims of car crashes that got a hard knock to the head. A brain bleed in the brain stem (if I'm remembering it right) will build up pressure until the stem suddenly disconnects.

Not electrical, but such syndromes seem to be real.

[tialaramex]

Walking Ghost phase is a phenomenon in severe exposure to radiation. The patient survives initial ill effects (probably with advanced medical treatment) and now feels fine. They have no nausea, they can walk and talk like anybody else. If you tell them they're actually dying they likely won't believe you. Inside cell reproduction has stopped, and as enough cells naturally die without replacement over the next few days their systems will cease functioning and they'll die of multiple organ failure.

Electricity definitely won't cause that, but yeah, humans can't sense all the terrible things that might have gone wrong with their bodies.

[dreamcompiler]

It's quite real. This is why we try very hard (everything short of kidnapping) to take people to the hospital after a bad car wreck ("high energy mechanism of injury" is the term we use) even if they're walking around saying they're fine.

[kube-system]

Adrenaline is a heck of a thing. I know someone who similarly said they were fine and wanted to go home after being hit by a car. They had fractured vertebrae and their spinal cord would have likely suffered permanent damage if it wasn’t immobilized as soon as it was.

[the-peter]

The EMTs didn't try very hard when I was flipped by a drunk driver. I crawled out of my window and told the EMTs I just wanted to go home and they said 'ok'.

[Cthulhu_]

Yup, definitely - this is why people will be asked if they blacked out, if only for a little while, after a fall. If they did the impact was severe enough to cause damage. And of course tight monitoring after head trauma.