12 Feb 2009
From the extract report of dr.Oliver Sacks, Awakings, 1990
It is surprising to know that the level of dopamine has a significant influence for the level of rigidity in a Parkinson patient. PET scan is able to determine the precise level of dopamine in a brain. For example, when the level of emotional stress increases, there will be an obvious drop in dopamine level in a brain, but a 30 to 50% drop may not produce any clinical symptoms. However, if it is further reduce by another 20%, Parkinsonian symptoms may prompt appear. Hence, if one reaches a threshold level or borderline which caused by stress, there may be a depletion of dopamine in the brain, and this may further trigger the Parkinsonian symptoms. In other words, the symptoms may come and go in any given situation. This should not be interpreted as the symptom may just disappear like that.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment