AspireSR is the first and only VNS Therapy that provides responsive stimulation. The AspireSR generator contains 3 modes: Standard Mode, Magnet Mode and now Detect & Respond Mode. Standard Mode1 Ongoing delivery of mild pulses to the vagus nerve. Treatment is delivered at regular intervals all day, every day so you do not have to worry about missing a dose. Magnet Mode Manual delivery of an extra dose of therapy as needed. Magnet Mode may be used during Standard Mode and Detect & Respond Mode. NEW! Detect & Respond Mode2 Responsive automatic delivery of an extra dose of therapy when a rapid increase in heart rate is detected that may be associated with seizures. 1. Also known as Normal Mode 2. Also known as AutoStim Mode