Female Voices Are Easier to Hear?

According to a recent study, female voices are easier to hear because they're processed by the brain's auditory section.  However, female voices are also very rhythmic, which makes them more complex.  This, according to the study, may explain why men grow weary from listening to women speak: our complex prosody taxes their brain power.

Okaaaaay.  But I'm only willing to accept this as a partial reason for male selective hearing.

The study also suggests that people suffering from aural hallucinations (false voices) hear male voices.  This is further evidence that male and female voices are processed by different brain areas.

Interesting.  But it doesn't explain why my aural hallucination sounds like my mother.