Consolidation Period for Phobia Treatment
A phobia is an intense fear associated with an object or situation that does not pose the degree of danger that the intensity of the fear would suggest. For example, a person with a phobia of clowns may cry or scream from fear at the sight of a clown. However, a clown does not pose any real danger.
People with phobias tend to avoid the object or situation that they fear. This is counterproductive. Many treatments for phobias use exposure therapy. A phobia treatment involves exposing the person with the phobia to the feared object repeatedly to show that no danger exists. This is a process that is done repeatedly with a gradual increase in intensity.
A psychological process called extinction is reducing a fear response to an object by repeated exposure that does not have negative consequences. After repeated exposure to the object of the specific phobia without danger, the mind learns that the object is not dangerous after all. This gradually reduces the fear that the phobia generated.
Recent research has been done on increasing the effectiveness of extinction therapy as phobia treatment. The study showed that extinction is most effective if the person is exposed to the feared object to trigger the memory of the phobia three minutes to six hours before extinction treatment for phobias begins. This elicits the phobia memory and causes it to be rewritten during the exposure therapy. If the memory is not provoked first, the exposure therapy for phobias forms a new memory instead of rewriting the memory or learned response that is causing the phobia.
The three minute to six hour period of time in which the repeated exposure to the feared object is most effective for rewriting the memory and reducing the fear response is called the consolidation period. The study suggested that if the extinction training occurs after the consolidation period and forms a new memory, the person does not have the same relief from phobias. Instead, when the person is presented with the feared object, the phobia memory and the harmless memory formed during the extinction training are in competition. The person may react in a phobic response, especially if the person is experiencing high levels of stress.
Research like this on the ability to rewrite memories so that they are less traumatic provides hope that the anxiety disorders such as phobias and PTSD can be treated effectively without medication.
December 11, 2009 | Posted by SWilson
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