Electrical sensitivity (ES) - sometimes also calle electrosensitivity or electromagnetic hypersensitivity (EHS) - is a condition in which a person experiences physical or psychological symptoms, reportedly aggravated by electromagnetic fields or other electromagnetic waves at exposure levels tolerated by the general public. There has been peer-reviewed scientific research reporting immunological and neurological changes in response to electromagnetic fields. However, the correlation of symptoms to electromagnetic fields is controversial because of double-blind tests that have suggested that humans are not that good at detecting the presence or absence of the fields.