The Schumann resonance is a variable peak in background RF noise at about 8Hz.
It's possible that the Shuttle has a monitor, as the VLF radiowaves are monitored at many places places as part of Ionospheric/Lightning research.
Comparison of global storm activity rate calculated from Schumann resonance background components to electric field intensity.
Evidence of electrical activity on Titan drawn from the Schumann resonances sent by Huygens probe
On the Multi-Station Schumann Resonance Monitoring of Worldwide Lightning Activity
Do Schumann resonance frequencies depend on altitude?
The frequency is so low that it would seem unlikely the signals could easily be generated, which if they are is more likely for ground station reception/comparison than any biological purpose in the shuttle.
The Russians have had many people in space for long times in Mir and Soyuz.
Occam is your friend.
You can easily build a monitor using a large coil and large conductive object to a high impedance (converts radio to electricity) and connect to the PC Sound card (uses Electricity, only the microphone/loudspeaker uses Audio). There are many free Digital Signal Processing software you can download to filter and display the resonances.
The only places making biological claims appear to be "off the wall" or "New Age" therapy, such as link in last post (It's just an Audio CD).
Electrosmog interferes with this natural frequency. In particular "pulsed" microwaves ie "digital" Mobile Phone Frequencies seem to have the ability to overlay or drown out this natural pulse. As high frequencies are here modulated by a pulse within the Extremely Low Frequency (ELF) range, it is this pulse which has been shown to interfere with the natural rhythms within the brain, Constant periodical stimuli influence biological oscillators (Zeitgebers) in the brain) which play important roles in biological regulation pathways
Gobbledegook. Mobile Phones use 800,000,000Hz to 2,100,000,000Hz depending on country and mode. Schumann Resonances are variable, around 8Hz, Radio Waves. Not Audio.
The "brain waves" are not affected by Radio at all. But are affected by what you see or hear.