Contingent Negative Variations (CNV) is a term used in psychology to describe an electrical brain potential that occurs in response to certain stimuli. However, there are several synonyms that can be used interchangeably with CNV. One commonly used synonym is the "negative shift". This term refers to the negative deflection in the brain's electrical activity that is observed during CNV. Another synonym is the "event-related potential" (ERP), which describes the brain's response to a specific event or stimulus. Additionally, the term "stimulus-locked potentials" can also be used to refer to CNV, highlighting the relationship between the potential and the stimulus that triggers it. Overall, these synonyms provide alternative ways to refer to the same phenomenon in the field of psychology.