You're right - I mixed up cerebellum/cerebrum/cortex terminology. My bad. The cases I'm referencing are hydrocephalus patients with severely compressed cerebral tissue who maintained normal cognitive function. The point about structural variation not precluding consciousness stands.

Thanks for clearing it up.

> The point about structural variation not precluding consciousness stands.

Maybe, but my point about high-functioning people with hydrocephalus is that they have the same or similar brain structure (in terms of what exists and how it's connected), just squished gradually over time from fluid pressure. It looks dramatically different in the CT scan, but it's still there, just squished into a different shape.

The brain is also plastic and adaptable of course, and this can help compensate for any damage that occurs. But the scans from those articles don't have the level of detail necessary to show neuron death or teach us about the plasticity of the brain.