I have recently started using Faros 180 24-hour Holter monitoring and HRV analysis (Kubios) and concurrent recording pulse-oximetry on patients presenting to our clinic with insomnia as the primary complaint. I am facinated and encouraged by your papers describing HRV analysis in people with OSA, to distinguish between pre and post CPAP response, and comparing PD+RBD vs PD alone. I am hoping to add to the literature, and am looking for gaps in the field to which I might be able to add.