I'm a neuroscientist interested in building a device to replicate the following study.
Essentially, they sent air through a nose catheter to stimulate mechanically sensitive cells of the nose. They had 8 seconds of continuous air, followed by 12 seconds off (0.05 Hz). This was to mimic the breathing associated with deep meditation, and they report it induced alterations to consciousness.
I'm interested in building a device that can replicate their paradigm, as well as send air bursts at an arbitrary frequency of my choosing. Ideally the range should be between very slow (~0.05 Hz) and higher frequencies (~100 Hz).
I understand pulsing most standard pumps won't work for those higher frequencies. My mechE friend proposed some two way valve that would be able to pulse between two directions, the nose catheter, or just out to the air. I could then just use a standard continuous pump or fan.
I'm unfamiliar with the terminology and haven't been able to find such an electrical valve. Does anyone know of any such valves, or perhaps has a better design in mind?