Spinal cord disorder and pattern oaf sensory loss

Different type of spinal disorder will give rise to different pattern of sensory loss
Even though nowadays everybody confirm the diagnosis by MRI, but go back to basis, in pre-MRI era, how our brilliant doctors diagnose them

Visual pathway and its defect

Somebody finds this is simple
But other may face problem on this.

This is actually quite straight forward
It elaborate optic nerve and the associated defect with the effect against vision/ visual field

Brain function

Human brain is complicated, expert may be can only defines less than 10% of brain. The other 90% is still unknown.

Now let us go through the known 10% of brain function.