Researchers found that propranolol – a beta-blocker used to treat high blood pressure, chest pain and other heart conditions, and which has previously been found to have amnesic effects – significantly reduced fearful behavior in participants with arachnophobia, after brief exposure to a tarantula. Drs. Marieke Soeter and Merel Kindt, of the Department of Clinical Psychology at the University of Amsterdam in the Netherlands, say their findings – published in the journal Biological Psychiatry -…