Methods The multicenter, double-blind, random samples, active-controlled study has been processed in the mild to moderate hypertensive patients, and maleic acid amlodipine as the controll drug.

Using brain scans to measure blood flow, British researchers discovered that a brain region known as the ventral striatum was more active when subjects chose unusual objects in controlled tests.

The process is controlled by chemical switches that stick on to genes and alter how active they are.