Figure 5: Graph showing the number of head dips observed on the elevated plus maze. Parkinsonism (-dopamine-2 receptors) and Parkinsonism treated (-dopamine-2 receptors/+gamma aminobutyric acid) shows a significant reduction in the number of head dips (**P < 0.01) than the control. No significant difference observed between the control and diazepam treated group i.e. normal saline versus + gamma aminobutyric acid