https://www.verywellhealth.com/perseveration-98602#:~:text=Perseveration%20is%20a%20common%20symptom,word%2C%20phrase%2C%20or%20gesture
"Perseveration is the persistent repetition of a word, phrase, or gesture despite the stopping of the stimulus that led to the word, phrase, or gesture. For example, if a person answers "Boston" to the question, "Where were you born?", he may then answer "Boston" to the question, "Can you say the days of the week backward?". Or, he may repeat "Boston" over and over again despite my trying to ask other questions. This shows that the person is unable to switch ideas. The person is usually unaware that he or she is perseverating (it is involuntary)"