Cathodal opening tetanus is a term used in neurophysiology to describe a phenomenon in which repetitive nerve stimulation causes sustained muscle contractions. However, there are several synonyms for this term that can help enhance our understanding. Firstly, it can be referred to as "prolonged muscular spasm" or "sustained muscle contraction". Additionally, "tetanic contraction" or simply "tetanus" can be used to describe this condition. Another synonym for cathodal opening tetanus is "continuous muscle twitching". Ultimately, these synonyms highlight the persistence and prolonged nature of muscle contractions associated with this neurophysiological phenomenon. Understanding these synonyms can aid in clear communication and facilitate research in the field of neurophysiology.