12/01/2011
Can the brain 'shut off' its anxiety?
by Deborah Bates
A study has shown how the human brain may be able to turn stress and anxiety on and off, as it is regulated by a specific type of vertebrate in the habenula portion.
Using electric shock treatment on zebrafish, a species with a very similar brain to humans, scientists discovered that it may be possible to use direct stimulation of the habenula to treat strong feelings of stress. This could ultimately help form anxiety-relieving medications for future generations.
"Our work deals with fundamental aspects of human experience - stress and anxiety," claims Dr Suresh Jesuthasan, leader of the study on Sify; "We think that the habenula of the brain is associated with the assessment of whether a stress has been overcome."
"Our study provides one possible explanation as to why the need to control the environment is such as a critical component of human behaviour - the feeling of control enables organisms to deal with such stress."
Although critics may worry over the authenticity of the study, as didn't involve human brains, the program director, Professor Dale Purves, commented: "It may seem strange to be exploring anxiety in a tiny fish, but the advantages of animal models like this for understanding complex human disorders may well be our best bet."
Unfortunately, the discoveries from the study will take some time to affect the current stress and anxiety treatments, so those struggling with these emotions should consider enlisting the help of a therapist. Trained professionals can help patients uncover the root cause of their stress, be it related to work, family or underlying emotional issues, before providing the tools to deal with anxiety in a healthier, more effective way.
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