nuclear Overhauser effect difference spectroscopy 

Synonym: nOe difference spectroscopy
https://doi.org/10.1351/goldbook.08386
One dimensional nuclear magnetic resonance spectroscopy that yields, through subtraction of spectra generated with and without selective excitation of a specific resonance, the nuclear Overhauser enhancement of nuclei spatially close to a selectively excited nucleus.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 698 [Terms] [Paper]