Magnetic Resonance Imaging (MRI) had brought about a revolution in the study of human brain function. Nowadays, hundreds of functional MRI studies are being published daily. In this talk, I will discuss the importance of the magnetic field strength of the MRI system for functional MRI specifically. I will give examples of what can be achieved with ultra-high field scanners, which are those that use magnets of 7 Tesla or higher, and I will discuss the possible clinical applications of these technological improvements.