His perseveration continued to the point where it was no longer appropriate.    From Wordnet, Princeton University. 

One abnormality of this function is called perseveration, which is the unnecessary repetition or maintenance of action.    From Wordnik.com.  [The Neuropsychiatric Guide to Modern Everyday Psychiatry] Reference

Some words are repeated in a stereotyped fashion, called perseveration.    From Wordnik.com.  [Clinical Work with Adolescents] Reference

Occasionally other abnormalities are noted, such as perseveration or distraction.    From Wordnik.com.  [A Study of Association in Insanity] Reference

"perseveration" of tactual images which had a strong feeling tone and which were associated with seen or heard reports of the experiences of others.    From Wordnik.com.  [Psychotherapy] Reference

There's a moment when the perseveration becomes unproductive.    From Wordnik.com.  [OpEdNews - Diary: Some Truth For A Change] Reference

You have been demonstrating perseveration for us these last few days.    From Wordnik.com.  [Think Progress » Rep. King: NYT Reporters Should Be Charged Under Espionage Act] Reference

A behavior related to motor perseveration is difficulty in initiating motor tasks.    From Wordnik.com.  [The Neuropsychiatric Guide to Modern Everyday Psychiatry] Reference

M.F. Unclassified reactions, mostly "far fetched" or incoherent; perseveration.    From Wordnik.com.  [A Study of Association in Insanity] Reference

In one particularly classic experiment, Piaget found a strange perseveration in infant behavior.    From Wordnik.com.  [Archive 2008-10-01] Reference

With perseveration, and maturity, the author might be able to give birth to some very good novels.    From Wordnik.com.  [Reader reviews of Eragon by Christopher Paolini.] Reference

They know that the American spirit is a practical one, with a belief in action versus perseveration.    From Wordnik.com.  [Adam Hanft: Triangulation isn't Inspiration] Reference

It seems to have something to do with Tyler's perseveration on the increasing blandness of BBQ sauce.    From Wordnik.com.  [What Did Pinochet Know that Cowen Doesn't?, Bryan Caplan | EconLog | Library of Economics and Liberty] Reference

I try for that linking, and love when I can do that throughout, getting a perseveration chain going from the headliner to the back page.    From Wordnik.com.  [Archive 2006-06-01] Reference

A.F. Unclassified reactions, mostly incoherent; perseveration: instances of association to preceding reaction and to preceding stimulus.    From Wordnik.com.  [A Study of Association in Insanity] Reference

Nevertheless, perseveration for me has meant spending my early teenage years learning how to program and becoming especially adept at using Windows.    From Wordnik.com.  [Boing Boing: May 16, 2004 - May 22, 2004 Archives] Reference

If it's your Fortune, 500 of almost anything's worth a celebratory fete, but remember -- perseveration is also often a symptom of certain mental problems.    From Wordnik.com.  [Number 500: a giveaway] Reference

The Kent-based psychiatrist claims that perseveration, an obsession with repeating words and gestures, is one of the more notable symptoms of this pathology.    From Wordnik.com.  [FallNews] Reference

Maybe Vic will take off his wolf suit, give up the Rumpus perseveration and come home to a late night snack and the civilizing process like Max does in the story.    From Wordnik.com.  [The Volokh Conspiracy » Books I Would Recommend to those Who Disagree With Me] Reference

I dunno, given that Dems have not regained the house since 1994, and NOT moderated the extreme positions that keep them OUT of power, it is libs who suffer perseveration.    From Wordnik.com.  [Think Progress » Rep. King: NYT Reporters Should Be Charged Under Espionage Act] Reference

It formed a good example of the origin of the process of perseveration, a process frequently adopted by the patient to guard against the disclosure of a troublesome secret.    From Wordnik.com.  [A Psychiatric Milestone Bloomingdale Hospital Centenary, 1821-1921] Reference

Lyme patients have a penchant for saying, “Wait a minute”, 2-3 times rapidly when the only demand on them is to record a phone number, which also speaks of perseveration.    From Wordnik.com.  [Like dyslexia, is there a condition that affects ones ability to do math? « Literacy Skills « Literacy Help « Literacy News] Reference

Kevin's worried about Grace, the older daughter, and her perseveration on apocalypses, pandemics and the like.    From Wordnik.com.  [Television Without Pity] Reference

#155 – perseveration – the tendency for a memory or idea to persist or recur without any apparent stimulus for it.    From Wordnik.com.  [Think Progress » Rep. King: NYT Reporters Should Be Charged Under Espionage Act] Reference

The dramatically below-chance performance of the hippocampal lesion subjects suggested some initial bias or perseveration.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Now I see where his perseveration lies, so I’ll probably start ignoring him again.    From Wordnik.com.  [Think Progress » Sen. Levin: Administration Planning Reduction of Troops in Fall to Help Win Elections] Reference

It’s the creepiest form of perseveration I’ve ever seen, and I’ve worked with the mentally ill that have obsession issues.    From Wordnik.com.  [Think Progress » Deficit Peacock Newt Gingrich Doesn’t Recognize His Own Feathers] Reference

It wasn’t so much the language that alarmed and worried her teacher, it was more her perseveration and her unawareness of danger.    From Wordnik.com.  [Archive 2006-10-01] Reference

It was OCD-level perseveration.    From Wordnik.com.  [Beth Jones: Taking and Leaving Advice, or Not Asking at All] Reference

Ah, from the master of perseveration himself.    From Wordnik.com.  [Please...] Reference

"Look at perseveration as an opportunity -- a gift from your child that tells you where her natural interest lies.    From Wordnik.com.  [About.com Parenting Special Needs] Reference

What, exactly, is perseveration?.    From Wordnik.com.  [Think Progress » Rep. King: NYT Reporters Should Be Charged Under Espionage Act] Reference

"problem behavior" called perseveration.    From Wordnik.com.  [Blogtimore, Hon] Reference

As I said above, it’s called perseveration.    From Wordnik.com.  [Think Progress » Rep. King: NYT Reporters Should Be Charged Under Espionage Act] Reference

Let’s no longer enable him in his perseveration.    From Wordnik.com.  [Think Progress » Rep. King: NYT Reporters Should Be Charged Under Espionage Act] Reference