Lecture 10: Compulsive Disorders (Curtis) Flashcards
Compulsion
repetitive behavior or mental act done to prevent or reduce anxiety or distress.
def. of obsession
persistent idea, thought, impulse, or image that is experienced as intrusive and inappropriate and that causes marked anxiety or distress
What is the Diagnostic and Statistical Manual used to diagnose?
compulsion
obessive-compulsive disorder (OCD)
a human psychiatric diagnosis. Only compulsions, not obessions can be confirmed in animals, although both probably occur.
redirected behavior
motivation to perform an activity toward an appropriate target is interrupted/prevented, so behavior is directed toward a less appropriate target. Can develop in stereotypy
displacement behavior
motivation to perform two behaviors that are in conflict with each other, then perform an unrelated behavior that is out of context. can develop into stereotypy
vacuum activity
instinctive behavior performed in the absence of the stimulus to which it would normally be directed. No apparent useful purpose. Can develop into stereotypy
Stereotypy
a specific behavior pattern that is repetitive, constant, predictable, and w/o obvious goal or function. Not ALL stereotypies are compulsive disorders!
How to tell difference b/w stereotypy and compulsive disorder
If behavior continues after stress is removed, you have a true compulsive behavior. If it doesn’t continue, it’s a stereotypy
Describe behavior assoc. with a compulsive disorder:
- out of context
- exaggerated or excessive
- repeated
- continue even when source of stress is removed
- may interfere w/ normal functions
Etiology of compulsive disorders
multifactorial causes. Probably involves NT changes. Can have ACQUIRED causes (ie. conflict, frustration, stress, inappropriate environments, physical lesions, etc.) or GENETIC causes (some genetic strains are predisposed to develop compulsive disorder)
Equines are predisposed to which compulsive behaviors?
cribbing, stall circling, pawing, weaving, stall kicking, flank biting.
What is cribbing?
horse grasps a horizontal surface w/ its incisors and aspirates air into the pharynx
Catte are predisposed to which compulsive behaviors?
bar licking, tongue rolling
Pigs are predisposed to which compulsive behaviors?
rooting, chain chewing