Hello and hope you are doing well.
Central sleep apneas are caused due disorders or lesions in the brain. The peripheral system does not get the right impulses for respiration and hence the stoppage of respiration. As a result the person is aroused from sleep. For central apneas therapy is by treating the underlying cause and again SV BiPAP, could also be effective as it is pressure support ventilation. With improvement in oxygenation the other symptoms may resolve. Discuss these options with your doctor when you happen to meet him next time.
Hope this helped and do keep us posted.
Get your breathing pathways checked, they need to scope your airways with a camera!
Buy choline, start eating magnesium,L-tyrosine, D-vitamins (double the dosage), Methylcobalamin 5000mcg a day, talk to your doc and ask him to prescribe ritalin (will probably aid your sleep). Melatonin will aid your sleep if you have issues falling asleep. You probably also have issues in you nostrals, then a cpap wont help without proper medication.
Then you will need this.
http://en.wikipedia.org/wiki/Mometasone_furoate
If this regime fails then modafinil will assist you also. But you need to treat your problems with a strict regime. Im not kidding here.