One might think that such a direct invasion of the homo sapiens control center would set off every alarm at our instinctual disposal. Yet when such a cochlear infiltration befell a woman in Vietnam, she was merely compelled to visit her doctor to complain about a mysterious pain. The answer to that mystery turned out to be a wolf spider that had decided to live in her head rent-free.
Elsewhere in arachnid auditory trespassing news, a woman in China heard "scratching" sounds inside her head that she feared were evil spirits, but which turned out to be a spider going all Matthew McConaughey on her eardrum. Meanwhile, a "swooshing" sound recently revealed the unwanted presence of a brown recluse in the ear of a woman in Kansas City, Missouri.
Not even our most treasured resource, obscure British musical celebrities, are safe from cranial incursions by fanged chelicerates. Singer/songwriter Katie Melua required a spider to be extracted from her ear via miniature vacuum cleaner after a "rustling" sound alerted her to the fact that one had relocated to her head, supposedly from a pair of earbuds. Presumably they were one of those cheap off-brand varieties that don't bother to make sure their products are completely spider-free before offering them to consumers. Pay extra for Best Buy's Spider Check; it's worth it.